In synonymy:
Allotheridion Archer, 1946 = Theridion Walckenaer, 1805 (Levi, 1957a: 19)
Billima Simon, 1908 = Theridion Walckenaer, 1805 (Levi, 1968c: 340)
Liger O. Pickard-Cambridge, 1896 = Theridion Walckenaer, 1805 (Miller, 2007a: 247)
Mastostigmus Simon, 1889 = Theridion Walckenaer, 1805 (Simon, 1894a: 550)
Phaetoticus Simon, 1894 = Theridion Walckenaer, 1805 (Levi & Levi, 1962: 26)
Tobesoa Keyserling, 1890 = Theridion Walckenaer, 1805 (Simon, 1894a: 550)

type Aranea picta Walckenaer, 1802; gender neuter

N.B.: this spelling (rather than the invalid emendations Theridium Leach, 1824 and Theridio Simon, 1864), with type species T. pictum (Walckenaer, 1802), on Official List of Generic Names in Zoology; see also Opinion 517 (ICZN, 1958) – also for the type species; considered a senior synonym of Mastostigmus Simon, 1889b: 230 [urn:lsid:nmbe.ch:spidergen:06153] (type M. decemperlatus Simon, 1889) and Tobesoa Keyserling, 1890: 240 [urn:lsid:nmbe.ch:spidergen:06154] (type T. theridioides Keyserling, 1890) by Simon, 1894a: 550 (other synonyms see below and note under Neottiura); considered a senior synonym of Allotheridion Archer, 1946: 41 [urn:lsid:nmbe.ch:spidergen:04614] (type T. murarium Emerton, 1882; described as a subgenus of T. but elevated to genus by Archer, 1950: 18) by Levi, 1957a: 19, of Phaetoticus Simon, 1894a: 552 [urn:lsid:nmbe.ch:spidergen:05707] (type P. modestus Simon, 1894) by Levi & Levi, 1962: 26, of Billima Simon, 1908d: 430 [urn:lsid:nmbe.ch:spidergen:05706] (type B. attrita Simon, 1908; transferred from the Theridiosomatidae) by Levi, 1968c: 340, and of Liger O. Pickard-Cambridge, 1896a: 210 [urn:lsid:nmbe.ch:spidergen:01058] (type L. incompta O. Pickard-Cambridge, 1896) by Miller, 2007a: 247 (contra Levi & Levi, 1962: 301, who placed that genus in the Linyphiidae); subgenera Cryptachaea Archer, 1946 and Parasteatoda Archer, 1946 now considered valid genera, subgenus Tholocco Archer, 1946 belongs to Thymoites Keyserling, 1884; not a senior synonym of Coleosoma O. Pickard-Cambridge, 1882 (Bryant, 1944: 51, contra Simon, 1894a: 550), Anelosimus Simon, 1891 (Levi, 1956b: 412, contra Simon, 1894a: 550), Chrysso O. Pickard-Cambridge, 1882 (Levi, 1957c: 59, contra Simon, 1894a: 550), Phyllonethis Thorell, 1869 (contra Simon, 1894a: 550), Sudabe Karsch, 1879, Faitidus Keyserling, 1884 (contra Simon, 1894a: 550) or Hubba O. Pickard-Cambridge, 1897 (Levi & Levi, 1962: 21-29), of Nesticodes Archer, 1950, Paidiscura Archer, 1950, or Rugathodes Archer, 1950 (Wunderlich, 1987a: 213), or of Wamba O. Pickard-Cambridge, 1896 (removed from S of Crustulina Menge, 1868 by Levi, 1959b: 112), Allodipoena Bryant, 1947 or Chindellum Archer, 1950 (Wunderlich, 1995n: 611, contra Levi, 1957a: 19); for a rejected transfer of T. virgulatum Nicolet, 1849, see Lycosa fernandezi.

Transferred to other genera:
Theridion acoreense Berland, 1932 -- see Cryptachaea
Theridion acrobeles Thorell, 1895 -- see Coleosoma
Theridion acutiventer (Keyserling, 1884) -- see Coleosoma
Theridion adamsoni Berland, 1935 -- see Platnickina
Theridion aelleni Hubert, 1970 -- see Theridula
Theridion affine Wider, 1834 -- see Centromerus
Theridion agaricographum Levy & Amitai, 1982 -- see Simitidion
Theridion akiyoshiense Uyemura, 1941 -- see Nesticus
Theridion alabamense Gertsch & Archer, 1942 -- see Platnickina
Theridion alacre Keyserling, 1884 -- see Cryptachaea
Theridion albocinctum Lucas, 1846 -- see Steatoda
Theridion albogullatum Urquhart, 1887 -- see Cryptachaea
Theridion albomaculatum (O. Pickard-Cambridge, 1882) -- see Chrysso
Theridion albovittatum Caporiacco, 1955 -- see Coleosoma
Theridion aleipata Marples, 1955 -- see Coleosoma
Theridion alpinum (Giebel, 1867 -- see Phylloneta
Theridion altiventer (Keyserling, 1884) -- see Cryptachaea
Theridion ambitum Barrows, 1940 -- see Maymena
Theridion ampullaceum Walckenaer, 1837 -- see Microlinyphia
Theridion amputatum Keyserling, 1884 -- see Thymoites
Theridion analyticum Chamberlin, 1924 -- see Anelosimus
Theridion angulithorax Bösenberg & Strand, 1906 -- see Parasteatoda
Theridion ansatum Walckenaer, 1841 -- see Tidarren
Theridion antheae Barrion & Litsinger, 1995 -- see Coleosoma
Theridion antonii Keyserling, 1884 -- see Platnickina
Theridion apicatum O. Pickard-Cambridge, 1872 -- see Neottiura
Theridion arcadicum Gertsch & Archer, 1942 -- see Paratheridula
Theridion armouri Levi, 1959 -- see Ameridion
Theridion aspersum (F. O. Pickard-Cambridge, 1902) -- see Ameridion
Theridion atlixco Levi, 1959 -- see Ameridion
Theridion atropunctatum Petrunkevitch, 1930 -- see Wamba
Theridion attritum Nicolet, 1849 -- see Kochiura
Theridion aulicum C. L. Koch, 1838 -- see Kochiura
Theridion aurantium Emerton, 1915 -- see Rugathodes
Theridion aztecum Chamberlin & Ivie, 1936 -- see Cryptachaea
Theridion backstromi Berland, 1924 -- see Chrysso
Theridion barreti Kulczyński, 1899 -- see Macaridion
Theridion barroanum Levi, 1959 -- see Exalbidion
Theridion bellicosum Simon, 1873 -- see Rugathodes
Theridion bellissimum L. Koch, 1879 -- see Thymoites
Theridion bellulum Keyserling, 1891 -- see Cryptachaea
Theridion bentificum Keyserling, 1891 -- see Cryptachaea
Theridion bertkaui Thorell, 1881 -- see Steatoda
Theridion bicolor Hahn, 1833 -- see Micryphantes
Theridion bicorne Wider, 1834 -- see Diplocephalus
Theridion bigibbum O. Pickard-Cambridge, 1912 -- see Paidiscura
Theridion bimaculatum (Linnaeus, 1767) -- see Neottiura
Theridion blackwalli O. Pickard-Cambridge, 1871 -- see Sardinidion
Theridion blatchleyi Bryant, 1945 -- see Platnickina
Theridion boqueronicum Kraus. 1955 -- see Parasteatoda
Theridion botezati Rosca, 1935 -- see Phylloneta
Theridion brachiatum Thorell, 1871 -- see Neottiura
Theridion braueri Simon, 1898 -- see Seycellesa
Theridion brevipalpe Bryant, 1942 -- see Wamba
Theridion bridgesi Levi, 1959 -- see Ameridion
Theridion bruneoviride (Mello-Leitão, 1948) -- see Neopisinus
Theridion bucculentum Nicolet, 1849 -- see Kochiura
Theridion buitenzorgi Strand, 1907 -- see Meotipa
Theridion calyciferum Urquhart, 1886 -- see Cryptachaea
Theridion cambridgei Petrunkevitch, 1911 -- see Chrysso
Theridion camurum Simon, 1877 -- see Parasteatoda
Theridion caninotatum (Bösenberg & Strand, 1906) -- see Paidiscura
Theridion canionis Chamberlin & Gertsch, 1929 -- see Cryptachaea
Theridion caracasanum Simon, 1894 -- see Thymoites
Theridion carolinum (Walckenaer, 1802) -- see Neottiura
Theridion carolinum Butler, 1877 -- see Latrodectus
Theridion catalinae Gertsch & Archer, 1942 -- see Thymoites
Theridion catapetraeum Gertsch & Archer, 1942 -- see Cryptachaea
Theridion cheliferum Wider, 1834 -- see Gonatium
Theridion chevalieri Berland, 1936 -- see Tidarren
Theridion chikunii Yaginuma, 1960 -- see Takayus
Theridion chilapa Levi, 1959 -- see Ameridion
Theridion chinda Chamberlin & Ivie, 1944 -- see Wamba
Theridion chonetum Zhu, 1998 -- see Spinembolia
Theridion cidrelicola Simon, 1895 -- see Mysmenopsis
Theridion cinctum (Walckenaer, 1841) -- see Phylloneta
Theridion cinerascens Roewer, 1942 -- see Platnickina
Theridion citrinum Taczanowski, 1874 -- see Nesticus
Theridion clabnum Roberts, 1978 -- see Spinembolia
Theridion clemens Levi, 1959 -- see Ameridion
Theridion cobanum Levi, 1959 -- see Ameridion
Theridion colima Levi, 1959 -- see Ameridion
Theridion compressum (Keyserling, 1884) -- see Chrysso
Theridion concinnum Blackwall, 1870 -- see Kochiura
Theridion confraternum Banks, 1898 -- see Thymoites
Theridion congener (O. Pickard-Cambridge, 1896) -- see Wamba
Theridion congener O. Pickard-Cambridge, 1863 -- see Dipoena
Theridion conigerum Simon, 1914 -- see Achaeridion
Theridion conjunctum Gertsch & Mulaik, 1936 -- see Hentziectypus
Theridion conurum Thorell, 1895 -- see Coleosoma
Theridion cornutum Yurinich & Drensky, 1917 -- see Phylloneta
Theridion credulum Gertsch & Davis, 1936 -- see Hentziectypus
Theridion crinigerum Simon, 1881 -- see Anatolidion
Theridion crinitum L. Koch, 1872 -- see Ambicodamus
Theridion crispulum Simon, 1895 -- see Wamba
Theridion cruciatum Giebel, 1869 -- see Steatoda
Theridion culicivorum Bösenberg & Strand, 1906 -- see Parasteatoda
Theridion cuneolatum Tullgren, 1910 -- see Tidarren
Theridion curvimanum (Simon, 1914) -- see Neottiura
Theridion decaryi Fage, 1930 -- see Anelosimus
Theridion decoloratum Keyserling, 1886 -- see Kochiura
Theridion decoratum L. Koch, 1867 -- see Parasteatoda
Theridion delebile Petrunkevitch, 1930 -- see Coleosoma
Theridion delicatum Blackwall, 1870 -- see Kochiura
Theridion dialeucon Simon, 1890 -- see Anelosimus
Theridion dianae (Bryant, 1947) -- see Wamba
Theridion diplostichum (Chamberlin & Ivie, 1936) -- see Chrysso
Theridion diversipes Rainbow, 1920 -- see Achaearanea
Theridion dorsiger Hahn, 1831 -- see Neottiura
Theridion dotanum (Banks, 1914) -- see Exalbidion
Theridion dromedariforme Roewer, 1942 -- see Cryptachaea
Theridion dromedarius Simon, 1880 -- see Paidiscura
Theridion dubiosum Keyserling, 1891 -- see Anelosimus
Theridion ecaudatum (Keyserling, 1884) -- see Faiditus
Theridion edinburgense Gertsch & Mulaik, 1936 -- see Thymoites
Theridion eigenmanni Banks, 1902 -- see Gaucelmus
Theridion elegans Blackwall, 1862 -- see Kochiura
Theridion elevatum Banks, 1897 -- see Tidarren
Theridion elimatum L. Koch, 1882 -- see Enoplognatha
Theridion emendatum Roewer, 1942 -- see Chrysso
Theridion epicosmum Rainbow, 1920 -- see Achaearanea
Theridion ethicum Keyserling, 1884 -- see Anelosimus
Theridion eximium Keyserling, 1884 -- see Anelosimus
Theridion expulsum Gertsch & Mulaik, 1936 -- see Thymoites
Theridion extrilidum Keyserling, 1889 -- see Cryptachaea
Theridion ferrumequinum Bösenberg & Strand, 1906 -- see Parasteatoda
Theridion fidum Mello-Leitão, 1943 -- see Mangora
Theridion flavipes (O. Pickard-Cambridge, 1895) -- see Coleosoma
Theridion flavomaculatum Lucas, 1846 -- see Steatoda
Theridion florens O. Pickard-Cambridge, 1896 -- see Hentziectypus
Theridion floridanum (Banks, 1900) -- see Coleosoma
Theridion foliaceum Nicolet, 1849 -- see Kochiura
Theridion fordulum Banks, 1909 -- see Tidarren
Theridion formosum serratum Franganillo, 1930 -- see Parasteatoda
Theridion frigicola Chamberlin & Ivie, 1947 -- see Phylloneta
Theridion frivaldszkyi Herman, 1879 -- see Heterotheridion
Theridion fuegianum Simon, 1904 -- see Episinus
Theridion fungosum Keyserling, 1886 -- see Exalbidion
Theridion fuscum Blackwall, 1841 -- see Theonoe
Theridion gentile Simon, 1881 -- see Anatolidion
Theridion gibberosum Kulczyński, 1899 -- see Echinotheridion
Theridion gibbithorax Simon, 1894 -- see Thymoites
Theridion giganteum Keyserling, 1884 -- see Cryptachaea
Theridion gigantipes Keyserling, 1890 -- see Cryptachaea
Theridion globosum Hentz, 1850 -- see Hentziectypus
Theridion gracile Keyserling, 1884 -- see Kochiura
Theridion grancanariense Wunderlich, 1987 -- see Grancanaridion
Theridion guadalupense (Keyserling, 1884) -- see Cryptachaea
Theridion guanicae Petrunkevitch, 1930 -- see Thymoites
Theridion guineense Simon, 1907 -- see Tidarren
Theridion gymnasticum Keyserling, 1884 -- see Anelosimus
Theridion haemorrhoidale Bertkau, 1880 -- see Tidarren
Theridion hansi Schenkel, 1950 -- see Thymoites
Theridion herbigradum Simon, 1873 -- see Neottiura
Theridion higense Dönitz & Strand, 1906 -- see Anelosimus
Theridion hilgendorfi Karsch, 1879 -- see Hypsosinga
Theridion hobbsi Gertsch & Archer, 1942 -- see Platnickina
Theridion huanrense Zhu & Gao, 1993 -- see Takayus
Theridion hypophyllum Fitch, 1869 -- see Emblyna
Theridion ignotum (Keyserling, 1884) -- see Cryptachaea
Theridion imparatum Bishop & Crosby, 1928 -- see Thymoites
Theridion impressum L. Koch, 1881 -- see Phylloneta
Theridion impressum intermedium Kulczyński, 1885 -- see Phylloneta
Theridion indicatum Banks, 1929 -- see Thymoites
Theridion indiciferum (Chamberlin & Ivie, 1936) -- see Chrysso
Theridion indicum Tikader, 1977 -- see Nihonhimea
Theridion inornatum Banks, 1899 -- see Hentziectypus
Theridion insigne (O. Pickard-Cambridge, 1897) -- see Thymoites
Theridion instabile O. Pickard-Cambridge, 1871 -- see Rugathodes
Theridion insulicola Bryant, 1947 -- see Platnickina
Theridion insulsum Gertsch & Mulaik, 1936 -- see Cryptachaea
Theridion interruptum Banks, 1908 -- see Coleosoma
Theridion intervallatum Emerton, 1915 -- see Wamba
Theridion intrepidum Sørensen, 1898 -- see Enoplognatha
Theridion jamaicense Levi, 1959 -- see Jamaitidion
Theridion japonicum Bösenberg & Strand, 1906 -- see Parasteatoda
Theridion jucundum O. Pickard-Cambridge, 1896 -- see Anelosimus
Theridion kentuckyense Keyserling, 1884 -- see Takayus
Theridion keyserlingi Petrunkevitch, 1911 -- see Chrysso
Theridion kijabei Berland, 1920 -- see Platnickina
Theridion kompirense Bösenberg & Strand, 1906 -- see Parasteatoda
Theridion kraepelini Simon, 1905 -- see Spinembolia
Theridion krasnojarskense Strand, 1903 -- see Enoplognatha
Theridion kunmingicum Zhu, 1998 -- see Takayus
Theridion lacteovittatum (Mello-Leitão, 1945) -- see Chrysso
Theridion lathropi Levi, 1959 -- see Ameridion
Theridion latifolium Yaginuma, 1960 -- see Takayus
Theridion lepidum O. Pickard-Cambridge, 1885 -- see Phylloneta
Theridion levipes Nicolet, 1849 -- see Anelosimus
Theridion libudum Roberts, 1978 -- see Stoda
Theridion lineamentum McCook, 1879 -- see Latrodectus
Theridion lineatum Hentz, 1850 -- see Latrodectus
Theridion linimaculatum Zhu, 1998 -- see Takayus
Theridion liotheum Bremi-Wolff, 1884 -- see Cryptachaea
Theridion lobifrons Simon, 1894 -- see Thymoites
Theridion longistylum (F. O. Pickard-Cambridge, 1902) -- see Helvibis
Theridion lowriei Barrows, 1945 -- see Rugathodes
Theridion lunatum (Clerck, 1757) -- see Parasteatoda
Theridion lunatum (Olivier, 1789) -- see Parasteatoda
Theridion lunulatum Guan & Zhu, 1993 -- see Takayus
Theridion lushanense Zhu, 1998 -- see Takayus
Theridion lyparum (Chamberlin & Ivie, 1936) -- see Chrysso
Theridion lyricum (Walckenaer, 1841) -- see Yunohamella
Theridion maculosum Keyserling, 1884 -- see Tidarren
Theridion maderae Gertsch & Archer, 1942 -- see Thymoites
Theridion magnificum (Archer, 1950) -- see Platnickina
Theridion magnificum Keyserling, 1884 -- see Anelosimus
Theridion malkini Levi, 1959 -- see Ameridion
Theridion mansuetum L. Koch, 1882 -- see Enoplognatha
Theridion maricaoense Bryant, 1942 -- see Achaearanea
Theridion marvum Levi, 1959 -- see Ameridion
Theridion marxi Keyserling, 1884 -- see Rugathodes
Theridion maxillosum Hahn, 1826 -- see Pachygnatha
Theridion maximum (Keyserling, 1891) -- see Cryptachaea
Theridion meum Bösenberg & Strand, 1906 -- see Campanicola
Theridion michaelseni Simon, 1902 -- see Selkirkiella
Theridion migrans Keyserling, 1884 -- see Cryptachaea
Theridion minusculum Nicolet, 1849 -- see Kochiura
Theridion mirabile Zhu, Zhang & Xu, 1991 -- see Paidiscura
Theridion mneon Bösenberg & Strand, 1906 -- see Platnickina
Theridion moctezuma Levi, 1959 -- see Ameridion
Theridion montanum Emerton, 1882 -- see Canalidion
Theridion mundulum L. Koch, 1872 -- see Parasteatoda
Theridion munifex O. Pickard-Cambridge, 1896 -- see Chrosiothes
Theridion musawas Levi, 1959 -- see Ameridion
Theridion musivum Simon, 1873 -- see Ruborridion
Theridion naevium Zhu, 1998 -- see Takayus
Theridion naneum Roberts, 1983 -- see Nanume
Theridion nervosum (Olivier, 1789) -- see Phylloneta
Theridion nicoleti Keyserling, 1886 -- see Thymoites
Theridion nigrescens Keyserling, 1884 -- see Anelosimus
Theridion nigripalpe (Banks, 1929) -- see Coleosoma
Theridion nigrodecoratum Rainbow, 1920 -- see Achaearanea
Theridion nigrofolium Urquhart, 1888 -- see Cryptachaea
Theridion nigrolimbatum Yaginuma, 1972 -- see Rugathodes
Theridion nigropunctatum Lucas, 1846 -- see Platnickina
Theridion nigrosternum (Keyserling, 1891) -- see Chrysso
Theridion nigrovariegatum Simon, 1873 -- see Heterotheridion
Theridion nigrovittatum Keyserling, 1884 -- see Parasteatoda
Theridion nigrum (O. Pickard-Cambridge, 1880) -- see Chrysso
Theridion nivalium Saito, 1934 -- see Neottiura
Theridion notabile Keyserling, 1891 -- see Euryopis
Theridion notatum (Linnaeus, 1758) -- see Phylloneta
Theridion oblivium O. Pickard-Cambridge, 1896 -- see Cryptachaea
Theridion obnubilum Keyserling, 1891 -- see Parasteatoda
Theridion ocellatum Nicolet, 1849 -- see Anelosimus
Theridion octomaculatum Bösenberg & Strand, 1906 -- see Coleosoma
Theridion ohlerti Thorell, 1870 -- see Ohlertidion
Theridion ohlerti lundbecki Sørensen, 1898 -- see Ohlertidion
Theridion olaup Levi, 1963 -- see Kochiura
Theridion oleatum L. Koch, 1879 -- see Thymoites
Theridion opimum Nicolet, 1849 -- see Kochiura
Theridion ornatulum Roewer, 1942 -- see Mangora
Theridion orotavense Schmidt, 1968 -- see Paidiscura
Theridion ovsjannikovi (Charitonov, 1950) -- see Chrysso
Theridion paidiscum Levi, 1959 -- see Ameridion
Theridion palgongense Paik, 1996 -- see Parasteatoda
Theridion pallens Blackwall, 1834 -- see Paidiscura
Theridion pallidum Walckenaer, 1841 -- see Parasteatoda
Theridion pallipes Keyserling, 1891 -- see Cryptachaea
Theridion pallisterorum Levi, 1959 -- see Exalbidion
Theridion palmgreni Marusik & Tsellarius, 1986 -- see Yunohamella
Theridion palustre Simon, 1873) -- see Paidiscura
Theridion panamense Levi, 1959 -- see Wamba
Theridion panum Levi, 1959 -- see Ameridion
Theridion paradisiacum Gertsch & Archer, 1942 -- see Thymoites
Theridion parenzani Trossarelli, 1931 -- see Nesticus
Theridion partitum Walckenaer, 1841 -- see Faiditus
Theridion parvipalpe Wider, 1834 -- see Macrargus
Theridion passivum Keyserling, 1891 -- see Cryptachaea
Theridion peristeri Drensky, 1929 -- see Heterotheridion
Theridion perniciosum Keyserling, 1886 -- see Paratheridula
Theridion perplexum (Keyserling, 1886) -- see Chrysso
Theridion petrense Sørensen, 1898 -- see Thymoites
Theridion petrum Levi, 1959 -- see Ameridion
Theridion phyllicolum Marples, 1955 -- see Mysmena
Theridion picadoi Banks, 1909 -- see Parasteatoda
Theridion pico Merrett & Ashmole, 1989 -- see Rugathodes
Theridion pictipes Keyserling, 1884 -- see Phylloneta
Theridion pilulum (Karsch, 1879) -- see Phoroncidia
Theridion pingue Keyserling, 1886 -- see Cryptachaea
Theridion placens Blackwall, 1877 -- see Anelosimus
Theridion plantatum Levi, 1959 -- see Ameridion
Theridion polygrammum Kulczyński, 1911 -- see Parasteatoda
Theridion porteri Banks, 1896 -- see Cryptachaea
Theridion portoricense Petrunkevitch, 1930 -- see Cryptachaea
Theridion progum Levi, 1959 -- see Ameridion
Theridion properum Keyserling, 1890 -- see Achaearanea
Theridion puer Mello-Leitão, 1941 -- see Thymoites
Theridion pulchellum (Walckenaer, 1802) -- see Selimus
Theridion pulchrum (Keyserling, 1891) -- see Chrysso
Theridion pumilio Urquhart, 1886 -- see Diploplecta
Theridion punctosparsum Emerton 1882 -- see Platnickina
Theridion purifum Roberts, 1978 -- see Seycellesa
Theridion purpureum Nicolet, 1849 -- see Selkirkiella
Theridion purum O. Pickard-Cambridge, 1894 -- see Cryptachaea
Theridion pusilanum Roewer, 1942 -- see Cryptachaea
Theridion pusillatum Roewer, 1942 -- see Neottiura
Theridion pusillum Kulczyński, 1905 -- see Neottiura
Theridion pustuliferum Levy & Amitai, 1982 -- see Neottiura
Theridion qingzangense Hu, 2001 -- see Phylloneta
Theridion qionghaiense Zhu, 1998 -- see Platnickina
Theridion quadrimaculatum (Banks, 1896) -- see Paratheridula
Theridion quadrimaculatum Song & Kim, 1991 -- see Takayus
Theridion quantum Levi, 1959 -- see Ameridion
Theridion quemadum Levi, 1959 -- see Ameridion
Theridion rapanae Berland, 1942 -- see Coleosoma
Theridion rapulum Yaginuma, 1960 -- see Chikunia
Theridion rarum Keyserling, 1886 -- see Thymoites
Theridion realisticum Gertsch & Mulaik, 1936 -- see Wamba
Theridion recurvatum Tullgren, 1901 -- see Selkirkiella
Theridion redemptum Gertsch & Mulaik, 1936 -- see Cryptachaea
Theridion redimitum (Linnaeus, 1758) -- see Enoplognatha
Theridion reservum Levi, 1959 -- see Ameridion
Theridion reticulatum C. L. Koch, 1845 -- see Neottiura
Theridion rinconense Levi, 1959 -- see Ameridion
Theridion roseum Nicolet, 1849 -- see Anelosimus
Theridion rostratum O. Pickard-Cambridge, 1896 -- see Cryptachaea
Theridion rotundum Keyserling, 1891 -- see Chrysso
Theridion rubellum Keyserling, 1884 -- see Dipoena
Theridion rubicundulum Roewer, 1942 -- see Chrysso
Theridion rubicundum Nicolet, 1849 -- see Kochiura
Theridion rubicundum (F. O. Pickard-Cambridge, 1902) -- see Chrysso
Theridion rubripes Hahn, 1833 -- see Hylyphantes
Theridion rubrovittatum (Keyserling, 1884) -- see Chrysso
Theridion rufipes Lucas, 1846 -- see Nesticodes
Theridion rufipunctum Levi, 1959 -- see Exalbidion
Theridion rufithorax Lucas, 1846 -- see Pachygnatha
Theridion rufolineatum Lucas, 1846 -- see Kochiura
Theridion ruinum Levi, 1959 -- see Ameridion
Theridion rupicola Emerton, 1882 -- see Cryptachaea
Theridion salvadorense Kraus, 1955 -- see Cryptachaea
Theridion santaanae Kraus, 1955 -- see Gaucelmus
Theridion saxatile C. L. Koch, 1835 -- see Cryptachaea
Theridion saylori Fox, 1940 -- see Steatoda
Theridion scenicum Thorell, 1899 -- see Tidarren
Theridion schmidti Levi, 1959 -- see Ameridion
Theridion schullei Gertsch & Mualik, 1936 -- see Hentziectypus
Theridion sciaphilum Benoit, 1977 -- see Helenidion
Theridion serenoae Gertsch & Archer, 1942 -- see Cryptachaea
Theridion sericum Urquhart, 1886 -- see Steatoda
Theridion serpatusum Guan & Zhu, 1993 -- see Yunohamella
Theridion setiger Urquhart, 1886 -- see Cryptachaea
Theridion seximaculatum Zhu, 1998 -- see Anelosimus
Theridion sexmaculatum Keyserling, 1884 -- see Exalbidion
Theridion sexpunctatum Emerton, 1882 -- see Rugathodes
Theridion sexsetosum Barrows, 1940 -- see Graphomoa
Theridion signaculum Levi, 1959 -- see Ameridion
Theridion signatellum Roewer, 1942 -- see Chrysso
Theridion signatum Hahn, 1834 -- see Microlinyphia
Theridion signatum (Keyserling, 1891) -- see Chrysso
Theridion signum Levi, 1959 -- see Ameridion
Theridion simile C. L. Koch, 1836 -- see Simitidion
Theridion simulatum Emerton, 1926 -- see Ohlertidion
Theridion sisyphium (Clerck, 1757) -- see Phylloneta
Theridion sisyphium foliiferum Thorell, 1875 -- see Phylloneta
Theridion sisyphium illepida Caporiacco, 1934 -- see Phylloneta
Theridion sisyphium torandae Strand, 1917 -- see Phylloneta
Theridion solium Benoit, 1977 -- see Trust
Theridion soloa Marples, 1955 -- see Pholcomma
Theridion sphaerula Hentz, 1850 -- see Theridula
Theridion spinatum Tullgren, 1901 -- see Episinus
Theridion spinipes Nicolet, 1849 -- see Ero
Theridion spiniventre O. Pickard-Cambridge, 1869 -- see Meotipa
Theridion spirifer O. Pickard-Cambridge, 1863 -- see Kochiura
Theridion splendens Roewer, 1942 -- see Chrysso
Theridion sterninotatum Bösenberg & Strand, 1906 -- see Platnickina
Theridion struthio Simon, 1894 -- see Thymoites
Theridion studiosum Hentz, 1850 -- see Anelosimus
Theridion stylifrons Simon, 1894 -- see Thymoites
Theridion suaveolens Simon, 1879 -- see Neottiura
Theridion subadultum Bösenberg & Strand, 1906 -- see Yunohamella
Theridion subimpressum Zhu, 1998 -- see Thymoites
Theridion sublatifolium Zhu, 1998 -- see Takayus
Theridion subpallens Bösenberg & Strand, 1906 -- see Paidiscura
Theridion subterraneum Banks, 1898 -- see Eidmannella
Theridion sudabides Bösenberg & Strand, 1906 -- see Chrosiothes
Theridion sulcatum (Keyserling, 1884) -- see Chrysso
Theridion taeniatum Keyserling, 1884 -- see Cryptachaea
Theridion takayense Saito, 1939 -- see Takayus
Theridion talmo Chamberlin & Ivie, 1944 -- see Platnickina
Theridion tempum Levi, 1959 -- see Ameridion
Theridion tepidariorum C. L. Koch, 1841 -- see Parasteatoda
Theridion terrestre Emerton, 1924 -- see Nesticus
Theridion terrestrellum Roewer, 1942 -- see Nesticus
Theridion tesselatum Keyserling, 1884 -- see Parasteatoda
Theridion texanum Banks, 1910 -- see Tidarren
Theridion thaleri Marusik, 1988 -- see Ohlertidion
Theridion tibiale Hahn, 1831 -- see Lasaeola
Theridion tigrae Esyunin & Efimik, 1996 -- see Yunohamella
Theridion tikaderi Patel, 1973 -- see Nihonhimea
Theridion tinctum (Walckenaer, 1802) -- see Platnickina
Theridion tosum Chamberlin, 1916 -- see Anelosimus
Theridion transiporum Zhu & Zhang, 1992 -- see Parasteatoda
Theridion transversum Nicolet, 1849 -- see Selkirkiella
Theridion triguttatum Keyserling, 1891 -- see Cryptachaea
Theridion triloris Urquhart, 1886 -- see Steatoda
Theridion tuberculatum Kroneberg, 1875 -- see Heterotheridion
Theridion tuberculum Urquhart, 1887 -- see Cryptachaea
Theridion tungurahua Levi, 1963 -- see Exalbidion
Theridion turrigerum Simon, 1899 -- see Tidarren
Theridion typicum Nicolet, 1849 -- see Episinus
Theridion umbraticum L. Koch, 1872 -- see Ohlertidion
Theridion unanimum Keyserling, 1891 -- see Ameridion
Theridion uncinatum Lucas, 1846 -- see Neottiura
Theridion undatum (Keyserling, 1884) -- see Cryptachaea
Theridion unimaculatum Emerton, 1882 -- see Thymoites
Theridion urticae (Walckenaer, 1802) -- see Parasteatoda
Theridion utibile Keyserling, 1884 -- see Echinotheridion
Theridion variipes (Keyserling, 1884) -- see Steatoda
Theridion ventillans Keyserling, 1884 -- see Theridula
Theridion ventrosum Nicolet, 1849 -- see Selkirkiella
Theridion verecundum Hentz, 1850 -- see Latrodectus
Theridion vernale Hahn, 1834 -- see Pachygnatha
Theridion veruculatum Urquhart, 1886 -- see Cryptachaea
Theridion vexabile (Keyserling, 1884) -- see Chrysso
Theridion virgulatum Nicolet, 1849 -- see Kochiura
Theridion viride Nicolet, 1849 -- see Kochiura
Theridion viridulum Roewer, 1942 -- see Kochiura
Theridion vittatum C. L. Koch, 1836 -- see Selimus
Theridion vituperabile Petrunkevitch, 1911 -- see Coleosoma
Theridion vividum Keyserling, 1891 -- see Cryptachaea
Theridion vivum O. Pickard-Cambridge, 1899 -- see Thymoites
Theridion volutum (F. O. Pickard-Cambridge, 1902) -- see Chrysso
Theridion wallacei Gertsch & Archer, 1942 -- see Thymoites
Theridion wangi Zhu, 1998 -- see Takayus
Theridion wolmerense Paik, 1996 -- see Takayus
Theridion xinjiangense (Hu & Wu, 1989) -- see Heterotheridion
Theridion xui Zhu, 1998 -- see Takayus
Theridion yaeyamense Yoshida, 1993 -- see Nipponidion
Theridion yunohamense (Bösenberg & Strand, 1906) -- see Yunohamella
Theridion zickzack Karsch, 1878 -- see Latrodectus

In synonymy:
Theridion altum Levi, 1963 = Theridion soaresi Levi, 1963 (Buckup, Marques & Rodrigues, 2010: 354).
Theridion angkora (Barrion, Barrion-Dupo & Heong, 2013, T from Enoplognatha) = Theridion melanostictum O. Pickard-Cambridge, 1876 (Lin et al., 2023a: 522).
Theridion antron Levi, 1963 = Theridion filum Levi, 1963 (Buckup, Marques & Rodrigues, 2010: 353).
Theridion antusi Kasal, 1982 = Theridion hemerobium Simon, 1914 (Bosmans, Vanuytven & Van Keer, 1994: 236).
Theridion apiatum Urquhart, 1891 = Theridion cruciferum Urquhart, 1886 (Dalmas, 1917a: 357).
Theridion atkinsi Bryant, 1940 = Theridion dilucidum Simon, 1898 (Levi, 1959b: 84).
Theridion atramontanum Banks, 1911 = Theridion flavonotatum Becker, 1879 (Levi, 1957a: 35).
Theridion berkeleyi Emerton, 1925 = Theridion hemerobium Simon, 1914 (Vanuytven, Van Keer & Janssen, 1990: 16).
Theridion bifoveolatum Denis, 1944 = Theridion spinitarse O. Pickard-Cambridge, 1876 (Levy & Amitai, 1982a: 84).
Theridion bishopi Schenkel, 1950 = Theridion melanurum Hahn, 1831 (Levi, 1957a: 55).
Theridion brunneafolium Urquhart, 1889 = Theridion cruciferum Urquhart, 1886 (Bryant, 1933b: 13).
Theridion cabriolatum Franganillo, 1930 = Theridion evexum Keyserling, 1884 (Levi, 1959b: 98).
Theridion campestratum Simon, 1900 = Theridion melinum Simon, 1900 (Bellvert, Gillespie & Arnedo, 2021: 25).
Theridion cretaense Wunderlich, 1995 = Theridion adrianopoli Drensky, 1915 (Knoflach, 1997: 138).
Theridion cybele Bryant, 1942 = Theridion positivum Chamberlin, 1924 (Levi, 1957a: 68).
Theridion defunctum Petrunkevitch, 1925 = Theridion dilucidum Simon, 1898 (Levi, 1959b: 84).
Theridion denisi Caporiacco, 1955 = Theridion positivum Chamberlin, 1924 (Levi, 1957a: 68).
Theridion denisi Wunderlich, 1987 = Theridion hannoniae Denis, 1945 (Bosmans, Vanuytven & Van Keer, 1994: 238).
Theridion denticulatum (Walckenaer, 1802) = Theridion melanurum Hahn, 1831 (Roewer, 1942a: 466).
Theridion detractum Gertsch & Mulaik, 1936 = Theridion positivum Chamberlin, 1924 (Levi, 1957a: 68).
Theridion dexteri Petrunkevitch, 1930 = Theridion antillanum Simon, 1894 (Bryant, 1942a: 343, sub T. minutum).
Theridion dimachaerum Bishop & Crosby, 1926 = Theridion flavonotatum Becker, 1879 (Levi, 1957a: 35).
Theridion dodonaeum Brignoli, 1984 = Theridion adrianopoli Drensky, 1915 (Knoflach, 1997: 137).
Theridion dorsatum Banks, 1897 = Theridion melanurum Hahn, 1831 (Levi, 1957a: 55).
Theridion echinatum Gao & Li, 2014 = Theridion zonulatum Thorell, 1890 (Sankaran et al., 2015c: 139).
Theridion egyptium Fawzy & El Erksousy, 2002 = Theridion jordanense Levy & Amitai, 1982 (Thaler-Knoflach & El-Hennawy, 2012: 95).
Theridion exornatum Urquhart, 1888 = Theridion cruciferum Urquhart, 1886 (Dalmas, 1917a: 357).
Theridion fieldi Levi, 1951 = Theridion hemerobium Simon, 1914 (Levi, 1957a: 52, sub T. berkeleyi).
Theridion floridense Banks, 1904 (removed from S of T. lyricum Walckenaer, 1841) = Theridion flavonotatum Becker, 1879 (Archer, 1946: 42).
Theridion hauseri Brignoli, 1984 = Theridion adrianopoli Drensky, 1915 (Knoflach, 1997: 138).
Theridion helvolum Urquhart, 1888 = Theridion cruciferum Urquhart, 1886 (Dalmas, 1917a: 357).
Theridion hublei Jocqué, 1977 = Theridion uhligi Martin, 1974 (Bosmans & Janssen, 1982: 283).
Theridion hui Zhu, 1998 = Theridion innocuum Thorell, 1875 (Zhong, Liu & Zhu, 2022: 96).
Theridion indianorum Gertsch & Archer, 1942 = Theridion intritum (Bishop & Crosby, 1926) (Levi, 1953b: 1, sub Allotheridion).
Theridion jeanae Gertsch & Archer, 1942 = Theridion morulum O. Pickard-Cambridge, 1898 (Levi, 1959b: 110).
Theridion kratochvili Kolosváry, 1934 = Theridion varians Hahn, 1833 (Wunderlich, 1977a: 289).
Theridion limaense Keyserling, 1884 = Theridion calcynatum Holmberg, 1876 (Levi, 1963c: 548).
Theridion literatum Urquhart, 1891 = Theridion cruciferum Urquhart, 1886 (Dalmas, 1917a: 357).
Theridion maculopes Urquhart, 1887 = Theridion cruciferum Urquhart, 1886 (Dalmas, 1917a: 357).
Theridion maxillatum Roewer, 1942 = Theridion petraeum L. Koch, 1872 (Levi, 1957a: 24).
Theridion melanosternon Mello-Leitão, 1947 = Theridion bisignatum (Mello-Leitão, 1945) (Buckup, Marques & Rodrigues, 2010: 352, contra Miller, 2007a: 247).
Theridion miami Levi, 1980 = Theridion melanostictum O. Pickard-Cambridge, 1876 (Levy, 1985a: 114).
Theridion minutum (Petrunkevitch, 1926) = Theridion antillanum Simon, 1894 (Levi, 1959b: 116).
Theridion mohave Gertsch & Archer, 1942 = Theridion geminipunctum Chamberlin, 1924 (Levi, 1957a: 43).
Theridion mumae Roewer, 1951 = Theridion rabuni Chamberlin & Ivie, 1944 (Levi, 1957a: 29).
Theridion neglectum Wiehle, 1952 = Theridion mystaceum L. Koch, 1870 (Prószyński & Staręga, 1971: 199).
Theridion nesticum Levi, 1963 = Theridion teresae Levi, 1963 (Buckup, Marques & Rodrigues, 2010: 354).
Theridion nigerpunctillum Urquhart, 1889 = Theridion cruciferum Urquhart, 1886 (Dalmas, 1917a: 357).
Theridion ogasawarense Yoshida, 1993 = Theridion melanostictum O. Pickard-Cambridge, 1876 (Yoshida, 1999: 129).
Theridion ornatum Hahn, 1831 = Theridion pictum (Walckenaer, 1802) (ICZN, 1958: 63).
Theridion pascagoulense Becker, 1879 = Theridion flavonotatum Becker, 1879 (Levi, 1957a: 34).
Theridion paumotui Berland, 1942 = Theridion buxtoni Berland, 1929 (Benton & Lehtinen, 1995: 11).
Theridion penai Levi, 1963 = Theridion ambiguum Nicolet, 1849 (Levi, 1967a: 8).
Theridion pictulum Banks, 1908 = Theridion melanurum Hahn, 1831 (Levi, 1957a: 55).
Theridion pinastraides Zhu & Shi, 1985 = Theridion pinastri L. Koch, 1872 (Zhu & Shi, 1985: 104, see note at Theridion pinastri).
Theridion pindi Brignoli, 1984 = Theridion cinereum Thorell, 1875 (Deltshev, 1992a: 20).
Theridion pirini Drensky, 1921 = Theridion petraeum L. Koch, 1872 (Deltshev, 1992a: 20).
Theridion placidum Roewer, 1942 = Theridion neomexicanum Banks, 1901 (Levi, 1957a: 77).
Theridion praetextum concolor Simon, 1900 = Theridion praetextum Simon, 1900 (Bellvert, Gillespie & Arnedo, 2021: 36).
Theridion pseudofrondeum Schenkel, 1950 = Theridion californicum Banks, 1904 (Levi, 1957a: 85).
Theridion querulum Keyserling, 1891 = Theridion tinctorium Keyserling, 1891 (Buckup & Marques, 1996: 58).
Theridion refugum Drensky, 1929 = Theridion cinereum Thorell, 1875 (Marusik, Kunt & Danışman, 2009: 73).
Theridion reticulateum Muma, 1944 = Theridion rabuni Chamberlin & Ivie, 1944 (Levi, 1957a: 28).
Theridion ritae Gertsch & Archer, 1942 = Theridion transgressum Petrunkevitch, 1911 (Levi, 1957a: 47).
Theridion rotundatum Petrunkevitch, 1911 = Theridion transgressum Petrunkevitch, 1911 (Levi, 1959b: 83).
Theridion scorinum Roberts, 1983 = Theridion melanostictum O. Pickard-Cambridge, 1876 (Yoshida, 2003a: 75).
Theridion shimenensis Zhang & Zhu, 2007 = Theridion macropora Tang, Yin & Peng, 2006 (Yin et al., 2012: 411).
Theridion spirale Emerton, 1882 = Theridion glaucescens Becker, 1879 (Gertsch in Archer, 1946: 47).
Theridion stanfordi Emerton, 1925 = Theridion melanurum Hahn, 1831 (Levi, 1957a: 55).
Theridion varians melanotum Strand, 1907 = Theridion varians Hahn, 1833 (Breitling et al., 2015: 76).
Theridion virginus Bryant, 1942 = Theridion dilucidum Simon, 1898 (Levi, 1959b: 84).
Theridion volatile Keyserling, 1884 = Theridion glaucescens Becker, 1879 (Levi, 1963c: 525).
Theridion wallacei Schenkel, 1950 = Theridion hemerobium Simon, 1914 (Levi, 1957a: 52, sub T. berkeleyi).
Theridion zebrinum Zhu, 1998, sub T. zebrinusum = Theridion zonulatum Thorell, 1890 (Ehrler et al., 2014: 80).
Theridion zelotypum Emerton, 1882 = Theridion pictum (Walckenaer, 1802) (Levi, 1957a: 50, sub T. ornatum).

Homonyms replaced:
Theridion annulipes O. Pickard-Cambridge, 1869 -- see Theridion ceylonicus
Theridion bertkaui Soares & Camargo, 1948 -- see Theridion soaresi
Theridion fruticum Tang, Yin & Peng, 2005 -- see Theridion macropora
Theridion maculipes Bryant, 1948 -- see Theridion elisabethae
Theridion placidum Bryant, 1948 -- see Theridion bryantae
Theridion simplex Thorell, 1877 -- see Theridion sulawesiense

Nomina dubia:
Theridion acanthognathum Lucas, 1858: 427 (mf, Gabon) -- Roewer, 1955c: 1679.
Theridion adspersum Perty, 1833: 193, pl. 38, f. 6 (j, Brazil) -- Levi, 1963c: 493.
Theridion americanum Walckenaer, 1841: 293 (USA) -- Levi, 1957a: 22.
Theridion araitense Saito, 1932: 100, f. 1a-g (f, Russia/Kurile Is.) -- Marusik et al., 1993b: 83.
Theridion argyrodiforme Bösenberg & Strand, 1906: 147, pl. 10, f. 190 (f, Japan) -- Yoshida, 2001c: 163.
Theridion armatum Nicolet, 1849: 539 (m, Chile) -- Levi, 1963c: 493.
Theridion atrilabrum Walckenaer, 1841: 319 (f, USA) -- Levi, 1957a: 22.
Theridion auratum Blackwall, 1864a: 198, pl. 14, f. 128 (j, Ireland) -- O. Pickard-Cambridge, 1900b: 76.
Theridion aureomaculatum Workman, 1900: 119 (f, Singapore) -- omitted by Roewer.
Theridion aureum Workman, 1900: 116 (f, Singapore) -- omitted by Roewer.
Theridion backi Children, 1836: 275 (Canada) -- Gertsch, 1953: 418.
Theridion bicolor Brullé, 1832: 51 (Greece) -- omitted by Roewer, listed by Bonnet, 1959: 4452.
Theridion bicolor Lucas, 1846: 268, pl. 16, f. 9 (f, Algeria) -- Roewer, 1955c: 1680.
Theridion blandum Hentz, 1850: 278, pl. 9, f. 20 (f, USA) -- Levi, 1957a: 22.
Theridion brasilianum Keyserling, 1884a: 81, pl. 4, f. 50 (f, Brazil) -- Levi, 1963c: 493.
Theridion candefactum Walckenaer, 1841: 313 (France) -- Roewer, 1955c: 1680.
Theridion caplandense Strand, 1907a: 529, Strand, 1907n: 582 (j, South Africa) -- Nentwig et al., 2020: 27.
Theridion catenatum Walckenaer, 1841: 289 (f, USA) -- Levi, 1957a: 22.
Theridion concinnum Nicolet, 1849: 535 (f, Chile) -- Levi, 1963c: 493.
Theridion conifaciens Hingston, 1932: 375 (f, Guyana) -- Levi, 1963c: 493.
Theridion cruciatum Hentz, 1850: 275, pl. 9, f. 8 (f, USA) -- Levi, 1957a: 22.
Theridion darolense Strand, 1906b: 615 (f, Ethiopia) -- Nentwig et al., 2020: 27.
Theridion deltaforme Workman, 1900: 115 (f, Singapore) -- omitted by Roewer.
Theridion diurnum Vinson, 1863: 284 (Réunion) -- Roewer, 1955c: 1681.
Theridion fuesslyi Simon, 1894c: 522, f. 3 (mf, St. Vincent) -- Levi, 1959b: 80.
Theridion funerarium Nicolet, 1849: 537 (f, Chile) -- Levi, 1963c: 493.
Theridion fuscum Franganillo, 1930: 13 (m, Cuba) -- Alayón & Sherwood, 2022: 612.
Theridion gayi Roewer, 1942a: 493 (j, Chile; replacement name for T. vittatum Nicolet, 1849: 537, preoccupied by C. L. Koch, 1836, see Anelosimus vittatus) -- Levi, 1963c: 493.
Theridion gibbosum Urquhart, 1894: 205 (m, New Zealand) -- Roewer, 1955c: 1681.
Theridion incisuratum Walckenaer, 1841: 307 (f, USA) -- Levi, 1957a: 22.
Theridion inconstans Curtis, 1897: 92 (f, USA) -- Levi, 1957a: 22.
Theridion indicis Bösenberg & Strand, 1906: 141, pl. 12, f. 280 (f, Japan) -- Yoshida, 2001c: 163.
Theridion inquinatum continentale Strand, 1907k: 129 (f, China) -- Nentwig et al., 2019: 46.
Theridion intentum Hentz, 1850: 278, pl. 9, f. 19 (f, USA) -- Levi, 1957a: 22.
Theridion kollari Doleschall, 1852: 649 (Austria) -- Breitling et al., 2015: 75.
Theridion labeculosum Workman, 1900: 117 (f, Singapore, Malaysia) -- omitted by Roewer.
Theridion lamperti Strand, 1906b: 615 (f, Ethiopia) -- Nentwig et al., 2020: 27.
Theridion lenzianum Strand, 1907a: 530, Strand, 1907n: 586 (m, South Africa) -- Nentwig et al., 2020: 27.
Theridion liliputanum Nicolet, 1849: 538 (f, Chile) -- Levi, 1963c: 493.
Theridion luctuosum Lucas, 1846: 263, pl. 17, f. 5 (f, Algeria) -- Roewer, 1955c: 1682.
Theridion moraballi Hingston, 1932: 376 (f, Guyana) -- Levi, 1963c: 493.
Theridion nebulosum Hahn, 1831b: 1, pl. 4, f. aA1 (f, Germany) -- Roewer, 1955c: 1683.
Theridion onustum Nicolet, 1849: 534 (f, Chile) -- Levi, 1963c: 493.
Theridion orix Walckenaer, 1841: 313 (m, USA) -- Levi, 1957a: 22.
Theridion oscitabundum Hentz, 1850: 275, pl. 9, f. 9 (f, USA) -- Levi, 1957a: 22.
Theridion pertenue Hentz, 1850: 283, pl. 10, f. 6 (f, USA) -- Levi, 1957a: 22.
Theridion piligerum Frauenfeld, 1867: 462 (India/Nicobar Is.) -- Prasad et al., 2019: 112.
Theridion piliphilum Strand, 1907a: 529, Strand, 1907n: 584 (f, South Africa) -- Nentwig et al., 2020: 27.
Theridion rubrolineatum Taczanowski, 1874: 58 (mf, French Guiana) -- Levi, 1963c: 493.
Theridion sadani Monga & Singh, 1989: 81, f. 1-3 (f, India) -- Sherwood & Caleb, 2024: 114.
Theridion sagaphilum Strand, 1918: 94 (f, Japan) -- Yoshida, 2001c: 163.
Theridion silvestre Nicolet, 1849: 531 (mf, Chile) -- Levi, 1963c: 493.
Theridion superbum Nicolet, 1849: 535 (f, Chile) -- Levi, 1963c: 493.
Theridion triangulare Franganillo, 1936b: 79 (f, Cuba) -- Alayón & Sherwood, 2022: 612.
Theridion umbrosum Nicolet, 1849: 533 (f, Chile) -- Levi, 1963c: 493.
Theridion undulatum Westring, 1861: 175 (f, Norway) -- Holm, 1973: 76.
Theridion vossi Strand, 1907a: 528, Strand, 1907n: 576 (f, Cameroon) -- Nentwig et al., 2020: 27.

Nomina nuda:
Theridion alveolus Walckenaer, 1805: 76 (Italy) [urn:lsid:nmbe.ch:spidersp:054322] -- Bonnet, 1959, no description.
Theridion baeri Simon, 1894a: 533, 538, f. 537 [urn:lsid:nmbe.ch:spidersp:054492] -- no description.
Theridion cellariorum Franganillo, 1917: 254 (Spain) [urn:lsid:nmbe.ch:spidersp:048758] -- Breitling et al., 2016b: 57, no description.
Theridion massiliensis Soyer, 1973: 116 (France) [urn:lsid:nmbe.ch:spidersp:054493] -- no description.
Theridion pseudogibberosum Schmidt, 1954: 408, 410 (Canary Is.) [urn:lsid:nmbe.ch:spidersp:054495] -- no description.

Theridion abruptum Simon, 1884k: 24 (Df).

Theridion acanthopodum Gao & Li, 2014: 92, f. 75A-B, 76A-B, 77A-D (Dm).

Theridion accoensis Levy, 1985a: 117, f. 62-65 (Dm).
Theridion accoense Levy, 1998b: 184, f. 349-352 (m).

Theridion acutitarse Simon, 1900a: 456, pl. 15, f. 9 (Dmf).
Theridion acutitarse Arnedo, Agnarsson & Gillespie, 2007: 342, f. 1D, 2C-D, 3B, H-I (mf).

Phyllonethis thorellii O. Pickard-Cambridge, 1894a: 132, pl. 18, f. 1 (Dm; preoccupied in T.).
Phyllonethis adjacens O. Pickard-Cambridge, 1896a: 166, pl. 20, f. 1 (Df).
Theridion thorelli F. O. Pickard-Cambridge, 1902a: 390, pl. 36, f. 28-29 (mf).
Theridion adjacens Levi, 1959b: 92, f. 111-117 (mf).

Theridion adrianopoli Drensky, 1915: 147, 175, pl. 1, f. 2 (Df).
Theridion dodonaeum Brignoli, 1984b: 297, f. 23-24 (Dm).
Theridion hauseri Brignoli, 1984b: 298, f. 25 (Df).
Theridion adrianopoli Deltshev, 1992a: 17, f. 1-3 (f).
Theridion cretaensis Wunderlich, 1995v: 691, f. 1-6 (Dmf).
Theridion adrianopoli Knoflach, 1997: 133, f. 1-12 (f, Sm).
Theridion adrianopoli Le Peru, 2011: 473, f. 803 (mf).
Theridion adrianopoli Lecigne, 2021a: 34, f. 51a-b (f).
Theridion adrianopoli Bosmans & Gavalas, 2023: 80, f. 39A-D (mf).

Theridion aeolium Levi, 1963c: 547, f. 96-97 (Df).

Theridion agrarium Levi, 1963c: 585, f. 256-257 (Df).

Theridion agreste Nicolet, 1849: 540 (Df).
Theridion ambiguum Levi, 1963c: 538, f. 54-58 (mf; misidentified per Levi, 1967a: 8).
Theridion agreste Levi, 1967a: 8 (removed from S of Episinus typicus, rejecting Levi, 1963c: 490).

Theridion agrifoliae Levi, 1957a: 83, f. 284-285, 302-303 (Dmf).

Theridion akme Levi, 1959b: 125, f. 210-211 (Df).

Theridion akron Levi, 1959b: 124, f. 250-252 (Dmf).

Theridion albidorsum Strand, 1909g: 561 (Dj).

Theridion albidum Banks, 1895d: 84 (Dmf).
Theridion frondeum Muma, 1943: 66, pl. XIII, f. 3 (f, misidentified).
Theridion albidum Kaston, 1945b: 5, f. 16-17 (mf).
Theridion albidum Kaston, 1948: 106, f. 170-171 (mf).
Allotheridion albidum Archer, 1950: 19, pl. III, f. 4 (Tmf from Theridion).
Theridion albidum Levi, 1957a: 82, f. 286-287, 300-301 (mf).
Theridion albidum Paquin & Dupérré, 2003: 222, f. 2479-2481 (mf).

Theridion albioculum Zhu, 1998: 128, f. 73A-F (Dmf).
Theridion albioculum Song, Zhu & Chen, 1999: 137, f. 71I-J, O-P (mf).
Theridion albioculum Song, Zhu & Chen, 2001: 113, f. 55A-F (mf).
Theridion albioculum Yin et al., 2012: 403, f. 175a-e (mf).
Theridion albioculum Zhou, Irfan & Peng, 2024: 2, f. 1A-G (mf).

Theridion albipes L. Koch, 1878b: 69 (Df; N.B.: may be a junior S of T. melanurum, per Wunderlich, 2011: 251).

Theridion albocinctum Urquhart, 1892b: 236 (Df; preoccupied by Lucas, 1846, see Steatoda albomaculata).

Theridion albodecoratum Rainbow, 1916a: 56, pl. 15, f. 35-36 (Df).

Theridion albolineatum Nicolet, 1849: 533 (Df).
Anelosimus albolineatus Levi, 1963c: 490 (Tf from Theridion).
Theridion albolineatum Levi, 1967a: 8, f. 14-15 (Tf from Anelosimus, contra Levi, 1963f: 42).

Theridion albolineolatum Caporiacco, 1940c: 815, f. 25 (Df).

Theridion albomaculosum O. Pickard-Cambridge, 1869b: 386, pl. 12, f. 57-60 (Dj).

Theridion albopictum Thorell, 1898: 307 (Dm).

Ero albostriata L. Koch, 1867b: 187 (Df).
Theridion albostriatum L. Koch, 1872a: 270, pl. 22, f. 7 (f).

Theridion albulum O. Pickard-Cambridge, 1898a: 255, pl. 34, f. 9 (Df).
Steatoda albula F. O. Pickard-Cambridge, 1902a: 387.
Theridion albulum Levi, 1959b: 114, f. 213-215 (f, Dm).

Theridion foliaceum Levi, 1963c: 536, f. 44-46 (mf).
Theridion amarga Levi, 1967a: 8 (name for above misidentified mf).

Theridion amatitlan Levi, 1963c: 545, f. 88-89 (Df).

Theridion ambiguum Nicolet, 1849: 532 (Df).
Theridion penai Levi, 1963c: 537, f. 52-53 (Df).
Theridion ambiguum Levi, 1967a: 8 (S).

Theridion ampascachi Mello-Leitão, 1941d: 144, f. 40 (Df).
Theridion ampascachi Levi, 1963c: 568, f. 198-199 (f).

Theridion ampliatum Urquhart, 1892b: 237 (Dm).
Theridion ampliatum Bryant, 1935c: 54, pl. 8, f. 2, 9 (m).

Theridion angusticeps Caporiacco, 1949a: 388, f. 41 (Df).

Theridion angustifrons Caporiacco, 1934a: 148 (Dj).

Theridion anson Levi, 1967a: 9, f. 11-13 (Dm).

Theridion antillanum Simon, 1894c: 522, f. 2 (Dmf).
Spintharus minutus Petrunkevitch, 1926: 51, f. 11 (Df).
Theridion dexteri Petrunkevitch, 1930a: 200, f. 45-50 (Dmf).
Theridion minutum Bryant, 1942a: 343 (Tf from Spintharus, Sm).
Theridion antillanum Levi, 1959b: 116, f. 223-226 (mf, S).

Theridion apicatum Thorell, 1881: 165 (Df; preoccupied by O. Pickard-Cambridge, 1872).
Theridion apiculatum Roewer, 1942a: 484 (replacement name).

Theridion aporum Levi, 1963c: 576, f. 227-228 (Dm).

Theridion apostoli Mello-Leitão, 1945b: 234, f. 8 (Df).
Theridion apostoli Levi, 1963c: 568, f. 196-197 (f).

Theridion apulco Levi, 1959b: 109, f. 187-188 (Df).

Theridion aragua Levi, 1963c: 541, f. 68-71 (Dmf).

Theridion archeri Levi, 1959b: 90, f. 93-94 (Df).

Theridion argentatum Urquhart, 1892b: 235 (Df; preoccupied by Keyserling, 1863).
Theridion argentatulum Roewer, 1942a: 484 (replacement name).

Theridion ariel Bellvert & Arnedo, in Bellvert, Gillespie & Arnedo, 2021: 5, f. 3A-H, 4A-B, 5A-G (Dmf).

Theridion arizonense Levi, 1957a: 49, f. 137-138 (Df).
Theridion arizonense Levi, 1969: 68, f. 1-4 (f, Dm).

Theridion arsia Zamani & Marusik, 2021c: 962, f. 7A-I (Df).

Theridion artum Levi, 1959b: 124, f. 313-314 (Df).

Theridion aruanum Strand, 1911d: 136, pl. 5, f. 41 (Df).

Theridion arushae Caporiacco, 1947c: 153, f. 23 (Df).

Theridion asbolodes Rainbow, 1917a: 483, pl. 32, f. 1 (Df).
Theridion absolodes Bonnet, 1959: 4445 (lapsus).

Theridion betteni Roberts, 1998: 300, f. (m palp only, misidentified).
Theridion betteni Wunderlich, 2011: 247, 263, f. 17 (m, misidentified).
Theridion asopi Vanuytven, 2014: 128, f. 1, 5, 9-10, 14 (Dmf).
Theridion asopi Lecigne, 2016d: 25, f. 13A-B (f).
Theridion asopi Lecigne, 2017: 28, f. 5E, 6E-F (mf).
Theridion asopi Lecigne, 2020: 58, pl. 5A (m).

Theridion astrigerum Thorell, 1895b: 99 (Dj).

Theridion atratum Thorell, 1877b: 467 (Df).

Billima attrita Simon, 1908d: 430 (Df).
Theridion attritum Levi, 1968c: 340, f. 1-4 (f).

Theridion auberti Simon, 1904d: 67 (Df).

Theridion aulos Levi, 1963c: 571, f. 209 (Dm).

Theridion australis Banks, 1899b: 191 (Df).
Allotheridion australe Archer, 1950: 38, pl. III, f. 5 (Tf from Theridion, Dm).
Theridion australe Levi, 1957a: 41, f. 131-132, 148-151 (mf).
Theridion australe Breene et al., 1993: 60, f. 31A-B (mf).

Theridion baccula Thorell, 1887: 114 (Df).

Theridion baltasarense Levi, 1963c: 584, f. 252-253 (Df).

Theridion banksi Berland, 1920c: 160, f. 195-198 (Dmf).

Theridion barbarae Levi, 1959b: 94, f. 120-123 (Dmf).

Theridion beebei Levi, 1963c: 578, f. 234 (Dm).

Theridion bellatulum Levi, 1963c: 561, f. 151-153 (Df).

Theridion bengalensis Sen, Saha & Raychaudhuri, 2011b: 128, f. 1-7 (Df).

Theridion bergi Levi, 1963c: 581, f. 86-87 (Df).
Achaearanea canionis Brignoli, 1972c: 380, f. 33-34 (f, misidentified).
Theridion bergi Xavier, Baptista & Trajano, 1995: 20, f. 2-8 (f, Dm).

Theridion albidum Berland, 1929b: 54, f. 33-36 (Df; preoccupied by Banks, 1895).
Theridion berlandi Roewer, 1942a: 485 (replacement name).

Theridion bernardi Lecigne, 2017: 29, f. 4A-E, 5A-D, 6A-D (Dmf).

Theridion betteni Wiehle, 1960b: 248, f. 31, 32c, 33c, 34, 35c (Dmf).
Theridion betteni Braun, 1963b: 116, f. 7-9 (f).
Theridion betteni Thaler, 1966: 153, f. 2c (f).
Theridion betteni Wiehle, 1967b: 187, f. 11 (f).
Theridion betteni Miller, 1971: 195, pl. XXXV, f. 18-19, pl. LXII, f. 21-23 (mf).
Theridion betteni Gruia, 1973b: 82, f. 14-16 (m).
Theridion betteni Ledoux, 1979: 287, f. 1a-b, 2a (f).
Theridion betteni Heimer & Nentwig, 1991: 304, f. 815 (mf).
Theridion betteni Roberts, 1998: 300, f. (f; not f. of m palp, =T. asopi).
Theridion betteni Türkes & Mergen, 2007: 116, f. 3 (f).
Theridion betteni Wunderlich, 2011: 247, f. 14-16, 18 (mf; not f. 17, =T. asopi).
Theridion betteni Le Peru, 2011: 474, f. 806 (mf).
Theridion betteni Hohner, 2011: 60, f. 1-2 (f).
Theridion betteni Vanuytven, 2014: 130, f. 3, 7, 11 (mf).
Theridion betteni Lecigne, 2017: 29, f. 5F (m).
Theridion betteni Breitling, 2018: 9, f. 2B (f).
Theridion betteni Breitling, 2020: 358, f. 35G-H, 36B (mf).
Theridion betteni Geci et al., 2023: 545, f. 20-22 (f).

Theridion bicruciatum Roewer, 1961b: 46, f. 10a-e (Df).
Theridion bicruciatum Dippenaar-Schoeman & Webb, 2024e: 25, f. 1-15 (f).

Theridion bidepressum Yin, Peng & Zhang, 2005: 59, f. 6-9 (Df).
Theridion bidepressum Yin et al., 2012: 404, f. 176a-d (f).

Theridion biezankoi Levi, 1963c: 573, f. 213 (Dm).

Theridion biforaminum Gao & Zhu, in Zhu, Gao & Guan, 1993: 89, f. 1-4 (Df).
Theridion biforaminum Zhu, 1998: 135, f. 79A-D (f).
Theridion biforaminum Song, Zhu & Chen, 1999: 137, f. 71K-L (f).

Theridion biolleyi Banks, 1909a: 204, pl. 6, f. 26 (Df).
Theridion biolleyi Banks, 1914a: 678, pl. 28, f. 7 (Dm).
Theridion biolleyi Levi, 1959b: 106, f. 195-196 (f).

Theridion biseriatum Thorell, 1890a: 267 (Df).

Oedothorax bisignatus Mello-Leitão, 1945b: 234, f. 9 (Dm).
Theridion melanosternon Mello-Leitão, 1947b: 237, f. 4-5 (Df) [urn:lsid:nmbe.ch:spidersp:008516].
Theridion melanosternum Levi, 1969: 70, f. 9-12 (f).
Theridion bisignatus Buckup, Marques & Rodrigues, 2010: 352, f. 14-16 (removed m from S of T. calcynatum, contra Miller, 2007a: 247, Sf, lapsus in gender of specific name).

Theridion bitakum Barrion & Litsinger, 1995: 441, f. 264a-f (Df).

Theridion blaisei Simon, 1909e: 86 (Df).

Theridion bertkaui Bösenberg, 1899: 114, pl. 1, f. 1 (Df, preoccupied by Thorell, 1881).
Theridion bertkaui Bösenberg, 1902: 108, pl. 9, f. 136 (f).
Theridion bertkaui Lessert, 1904: 303, pl. 5, f. 11-16 (f, Dm).
Theridion bösenbergi Strand, 1904b: 89 (replacement name).
Theridion boesenbergi Wiehle, 1937: 175, f. 150-153 (mf).
Allotheridion bosenbergi Archer, 1950: 19 (Tmf from Theridion).
Theridion bösenbergi Wiehle, 1960b: 252, f. 36 (f).
Theridion boesenbergi Tystshenko, 1971: 150, f. 407, 433 (mf).
Theridion boesenbergi Miller, 1971: 196, pl. XXXV, f. 16-17 (mf).
Theridion boesenbergi Thaler, 1981c: 109, f. 15-16 (f).
Theridion boesenbergi Heimer & Nentwig, 1991: 306, f. 818 (mf).
Theridion boesenbergi Le Peru, 2011: 474, f. 808 (mf).
Theridion boesenbergi Svojanovská, 2014: 17, left f. (m).
Theridion boesenbergi Wiśniewski & Wesołowska, 2017: 117, f. 9-11 (m).
Theridion boesenbergi Dolejš & Rückl, 2017: 89, f. 5-8 (mf).

Theridion bolivari Levi, 1959b: 108, f. 189-190 (Df).

Theridion bolum Levi, 1963c: 526, f. 3-4 (Dm).

Theridion bomae Schmidt, 1957: 282, f. 1-3 (Df).

Theridion bosniense Wunderlich, 2011: 247, f. 19-21 (Dm).

Theridion botanicum Levi, 1963c: 551, f. 117-120 (Dmf).

Theridion brachypus Thorell, 1887: 119 (Df).

Theridion bradyanum Strand, 1907a: 529 (Df).
Theridion bradyanum Strand, 1907n: 580 (Df).
Theridion bradyanum Strand, 1909g: 562 (Dm).

Theridion brunellii Caporiacco, 1940c: 816 (Df).

Theridion brunneonigrum Caporiacco, 1949a: 380, f. 36a-c (Df).

Theridion placidum Bryant, 1948a: 58, f. 5 (Df; preoccupied by Roewer, 1942, see Theridion neomexicanum) [urn:lsid:nmbe.ch:spidersp:055707].
Theridion bryantae Roewer, 1951: 455 (replacement name).
Theridion bryantae Levi, 1959b: 88, f. 76-77 (f).

Theridion bullatum Tullgren, 1910: 133, pl. 2, f. 50 (Dm).

Theridion buxtoni Berland, 1929b: 51, f. 26-30 (Dmf).
Theridion paumotui Berland, 1942: 16, f. 6g-h (Df).
Theridion buxtoni Benton & Lehtinen, 1995: 11 (S).
Theridion buxtoni Dierkens & Ramage, 2016: 150, f. 52-53 (m).

Theridion cairoense Wunderlich, 2011: 248, f. 22-27a (Dmf).

Theridion calcynatum Holmberg, 1876: 14 (D).
Theridion calcynatum Keyserling, 1884a: 72, pl. 4, f. 44 (Dmf).
Theridion limaense Keyserling, 1884a: 76, pl. 4, f. 46 (Dmf).
Theridion calycinatum Bonnet, 1959: 4459 (lapsus).
Theridion calcynatum Levi, 1963c: 548, f. 100-107 (mf, S).
Theridion calcynatum Baert et al., 2023: 33, f. 125A-C (mf).

Theridion caliban Bellvert & Arnedo, in Bellvert, Gillespie & Arnedo, 2021: 9, f. 7A-H, 8A-B, 9A-F (Dmf).

Theridion californicum Banks, 1904b: 344, pl. 39, f. 34 (Df).
Theridion californicum Emerton, 1924b: 30, f. 5-6 (Dm).
Allotheridion californicum Archer, 1950: 38, pl. III, f. 5 (Tmf from Theridion).
Theridion pseudofrondeum Schenkel, 1950b: 50, f. 14 (Df).
Theridion californicum Levi, 1957a: 84, f. 273, 276-277, 304-305 (mf, S).

Theridion caliginosum Marples, 1955a: 486, pl. 58, f. 16, 20 (Df).

Theridion cameronense Levi, 1957a: 40, f. 114-115 (Df).
Theridion cameronense Levi, 1959b: 81, f. 74-75 (f).

Theridion carinatum Yin, Peng & Zhang, 2005: 57, f. 1-5 (Dmf).
Theridion carinatum Yin et al., 2012: 406, f. 177a-e (mf).

Theridion carpathium Brignoli, 1984b: 296, f. 21 (Df).
Theridion carpathium Le Peru, 2011: 475, f. 809 (f).

Theridion cassinicola Simon, 1907d: 259 (Df).
Theridion crassinicola Roewer, 1942a: 476 (lapsus).

Theridion castaneum Franganillo, 1931d: 47 (Df).

Theridion catharina Marples, 1955a: 485, pl. 59, f. 6, 11 (Df).

Steatoda cavipalpus F. O. Pickard-Cambridge, 1902a: 382, pl. 36, f. 6 (Dm).
Theridion cavipalpus Petrunkevitch, 1911: 193.
Theridion cavipalpe Levi, 1959b: 91, f. 205 (m).
Theridion cavipalpus Wunderlich, 1995n: 610, f. 1 (m).

Theridion cazieri Levi, 1959b: 115, f. 216-218 (Dmf).

Theridion centrum Levi, 1959b: 90, f. 208-209 (Df).

Theridion ceres Bellvert & Arnedo, in Bellvert, Gillespie & Arnedo, 2021: 11, f. 11A-D, 12A-B (Df).

Theridion annulipes O. Pickard-Cambridge, 1869b: 384 (Dm; N.B.: preoccupied by Heer, 1865 in a fossil species) [urn:lsid:nmbe.ch:spidersp:008217].
Theridion ceylonicus Dunlop & Jekel, 2009: 358 (replacement name).

Theridion chacoense Levi, 1963c: 553, f. 121-122 (Dm).

Theridion chakinuense Wunderlich, 1995v: 693, f. 12-13 (Dm).

Theridion chamberlini Caporiacco, 1949a: 391, f. 43 (Df).

Theridion charitonowi Caporiacco, 1949a: 383, f. 38a-b (Df).

Theridion sp. 2 Dierkens & Charlat, 2013: 71, f. 16-17 (f) [after Dierkens & Ramage, 2016: 153].
Theridion charlati Dierkens, in Dierkens & Ramage, 2016: 150, f. 54-56 (Df).

Theridion cheimatos Gertsch & Archer, 1942: 3, f. 15-16 (Df).
Theridion cheimatos Levi, 1957a: 96, f. 335-336, 354-357 (f, Dm).

Theridion cheni Zhu, 1998: 151, f. 92A-D (Df).
Theridion cheni Song, Zhu & Chen, 1999: 137, f. 72C-D (f).

Theridion chenzhangfui Lin & Li, in Lin et al., 2024a: 82, f. 68A-B, 69A-B, 73A-B, 75B-D (Dmf).

Theridion chihuahua Levi, 1959b: 108, f. 191-192 (Df).

Theridion chiriqui Levi, 1959b: 122, f. 268-271 (Dmf).

Theridion choroni Levi, 1963c: 533, f. 34-35 (Df).

Theridion cinctipes Banks, 1898a: 186 (Dm).
Theridion cinctipes Levi, 1957a: 29, f. 87-88, 99 (m).

Theridion cinereum Thorell, 1875b: 66 (Dmf).
Theridion cinereum Thorell, 1875c: 49 (Df).
Theridion refugus Drensky, 1929: 31, 68, pl. 3, f. 3-5 (Dmf) [urn:lsid:nmbe.ch:spidersp:008650].
Theridion wiehlei Thaler, 1981c: 110, f. 11-13 (mf; misidentified per Marusik, Kunt & Danışman, 2009: 72).
Theridion pindi Brignoli, 1984b: 300, f. 26 (Df).
Theridion refugus Deltshev, 1992a: 20, f. 1-3 (mf, S of Theridion pindi).
Theridion refugum Knoflach, 1998: 589, f. 46, 52, 55d (mf).
Theridion cinereum Marusik, Kunt & Danışman, 2009: 72, f. 17-22 (mf, S of Theridion refugum).
Theridion cinereum Le Peru, 2011: 475, f. 810 (mf).
Theridion cinereum Dolanský & Macek, 2014: 4, f. 1-2 (f).
Theridion cinereum Kovblyuk et al., 2016: 110, f. 283-290 (mf).
Theridion cinereum Zamani et al., 2021b: 295, f. 12A-B (m).
Theridion cinereum Seropian et al., 2024a: 112, f. 43-44 (mf).

Theridion circuitum Gao & Li, 2014: 98, f. 78A-B, 79A-B, 80A-D (Dm).

Theridion circumtextum Simon, 1907d: 257 (Df).

Theridion climacode Thorell, 1898: 298 (Df; N.B.: described as possible member of Teutana=Steatoda).

Theridion clivalum Zhu, 1998: 134, f. 78A-C (Df).
Theridion clivalum Song, Zhu & Chen, 1999: 137, f. 72I-J (f).

Theridion cloxum Roberts, 1983: 239, f. 85-88 (Df).
Theridion cloxum Saaristo, 2010: 278, f. 37.150 (f).

Theridion clypeatellum Tullgren, 1910: 129, pl. 2, f. 44 (Djf).
Theridion clypeatellum Berland, 1920c: 158, f. 190-192 (f).
Theridion clypeatellum Caporiacco, 1941b: 86, f. 23 (Dm).

Theridion cochise Levi, 1963c: 553, f. 123-124 (Dm).
Theridion cochise Levi, 1969: 69, f. 5-8 (m, Df).
Theridion cochise Agnarsson, Coddington & Knoflach, 2007: 368, f. 113-115 (m).
Theridion cochise Agnarsson & Coddington, 2008: 53, f. 1B (m).

Theridion cochrum Levi, 1963c: 586, f. 266-269 (Df).

Theridium sp. Banks, 1905b: 21 (D).
Theridium cocosense Strand, 1906i: 783 (just gave a name to Banks' species).
Theridion cocosense Levi, 1963c: 543, f. 82-83 (f).

Theridion coenosum Thorell, 1887: 110 (Df).
Theridion caenosum Bonnet, 1959: 4459 (lapsus).

Theridion cohni Levi, 1963c: 529, f. 19-20 (Df).

Theridion coldeniae Baert & Maelfait, 1986: 55, f. 5-9 (Dmf).
Theridion coldeniae Baert et al., 2023: 33, f. 126A-E (mf).

Theridion comstocki Berland, 1920c: 162, f. 199-201 (Df).

Theridion confusum O. Pickard-Cambridge, 1885b: 34 (Df).

Theridion contreras Levi, 1959b: 100, f. 144-147 (Dmf).

Theridion convexum Keyserling, 1890: 241, pl. 22, f. 1 (Df; preoccupied by Blackwall, 1870).
Theridion convexellum Roewer, 1942a: 485 (replacement name).

Theridion convexisternum Caporiacco, 1949a: 393, f. 45a-e (Dmf).

Theridion corcyraeum Brignoli, 1984b: 297, f. 22 (Df).
Theridion corcyraeum Le Peru, 2011: 475, f. 812 (f).

Theridion costaricaense Levi, 1963c: 556, f. 137-138 (Df).

Theridion cowlesae Levi, 1957a: 31, f. 91-92 (Df).

Theridion coyoacan Levi, 1959b: 93, f. 107-110 (Dmf).

Theridium cruciferum Urquhart, 1886: 193, pl. 7, f. 5 (Dmf).
Theridium maculopes Urquhart, 1887: 105 (Df) [urn:lsid:nmbe.ch:spidersp:063283].
Theridium helvolum Urquhart, 1888: 113, pl. 11, f. 2 (Df) [urn:lsid:nmbe.ch:spidersp:063284].
Theridium exornatum Urquhart, 1888: 115 (Df) [urn:lsid:nmbe.ch:spidersp:063285].
Theridium brunnea-folium Urquhart, 1889a: 142 (Df) [urn:lsid:nmbe.ch:spidersp:063287].
Theridium niger-punctillum Urquhart, 1889a: 143 (Df) [urn:lsid:nmbe.ch:spidersp:063288].
Theridium apiatum Urquhart, 1891a: 148 (Df) [urn:lsid:nmbe.ch:spidersp:063289].
Theridium literatum Urquhart, 1891a: 150 (Df) [urn:lsid:nmbe.ch:spidersp:063290].
Theridion cruciferum Dalmas, 1917a: 357 (S of Theridion apiatum, T. calyciferum [with ?, accepted by Roewer, 1942a: 485, rejected by Smith et al., 2012: 50, see Cryptachaea veruculata], T. exornatum, T. helvolum, T. literatum, T. maculopes and T. nigerpunctillum).
Theridion cruciferum Bryant, 1933b: 13 (S of Theridion brunneafolium).

Theridion crucum Levi, 1959b: 96, f. 142-143 (Dm).

Theridion cuspulatum Schmidt & Krause, 1998: 419, f. 2-3 (Df).

Theridion cuyutlan Levi, 1963c: 579, f. 235 (Dm).

Theridion cygneum Gao & Li, 2014: 98, f. 81A-B, 82A-B, 83A-D (Dm).

Theridion cynicum Gertsch & Mulaik, 1936b: 10, f. 12 (Dm).
Anelosimus cynicum Archer, 1950: 22 (Tm from Theridion, rejected).
Theridion cynicum Levi, 1957a: 39, f. 126-128 (m, Df).

Theridion cyprusense Wunderlich, 2011: 240, f. 3-5 (Dm).
Theridion cyprusense Zamani, Nadolny & Dolejš, 2022: 566, f. 8D (m).

Theridion dafnensis Levy & Amitai, 1982a: 113, f. 65-66 (Df).
Theridion dafnense Levy, 1998b: 208, f. 397-398 (f).

Theridion davisorum Levi, 1959b: 89, f. 72-73 (Df).

Theridion dayongensis Zhu, 1998: 175, f. 11A-D (Df).
Theridion dayongensis Song, Zhu & Chen, 1999: 137, f. 72K-L (f).
Theridion dayongense Yin et al., 2012: 407, f. 178a-d (f).

Theridion decemmaculatum Thorell, 1890a: 275 (Dm).

Mastostigmus decemperlatus Simon, 1889b: 230 (Dm).
Theridion decemperlatum Simon, 1894a: 539 (T from Mastostigmus).
Mastostigmus decemperlatus Levi & Levi, 1962: 23 (no specimens known to exist, species description not recognizable, probably a synonym of Euryopis).

Theridion dedux O. Pickard-Cambridge, 1904b: 158, pl. 12, f. 1 (Dmf).

Theridion delicatum O. Pickard-Cambridge, 1904b: 157, pl. 11, f. 5 (Df; preoccupied by Blackwall, 1870, see Kochiura aulica).
Theridion delicatum Dippenaar-Schoeman et al., 2021A: 29, 4 f. (f).

Theridion derhami Simon, 1895g: 139 (Df).

Theridion desertum Ponomarev, 2008a: 50, f. 8-11 (Dmf).

Theridion diadematum Chrysanthus, 1963: 749, f. 110-112 (Df).

Theridion dianiphum Rainbow, 1916a: 58, pl. 16, f. 38-39 (Df).

Theridion differens Emerton, 1882: 9, pl. 1, f. 1 (Dmf).
Theridion differens Keyserling, 1884a: 52, pl. 2, f. 30 (mf).
Theridion differens Emerton, 1902: 114, f. 263-266 (mf).
Theridion differens Emerton, 1909: 180, pl. 1, f. 7 (f).
Theridion differens Comstock, 1940: 367, f. 132, 351-352 (mf).
Theridion spirale Muma, 1943: 67, pl. XIII, f. 4 (f).
Theridion differens Kaston, 1945b: 4, f. 14 (f).
Theridion differens Kaston, 1948: 103, f. 123-124, 144-145 (mf).
Allotheridion differens Archer, 1950: 20, pl. III, f. 4-5 (Tmf from Theridion).
Theridion differens Levi, 1957a: 32, f. 100-101, 104-106 (mf).
Theridion differens Shear, 1967: 6, f. 6-7 (m).
Theridion differens Paquin & Dupérré, 2003: 222, f. 2482-2484 (mf).

Theridion dilucidum Simon, 1898i: 862 (Df).
Theridion defunctum Petrunkevitch, 1925a: 103, f. 13-14 (Dm).
Theridion atkinsi Bryant, 1940: 317, f. 72-73, 77 (Dmf).
Theridion virginus Bryant, 1942a: 344, f. 27 (Dm).
Theridion dilucidum Levi, 1959b: 84, f. 78-81 (f, Sm).

Theridion dilutum Levi, 1957a: 37, f. 112-113, 123-125 (Dmf).

Theridion dividuum Gertsch & Archer, 1942: 6, f. 29 (Dm).
Allotheridion dividuum Archer, 1950: 20 (Tmf from Theridion).
Theridion dividuum Levi, 1957a: 25, f. 67-68, 71-74 (mf).

Theridion dominica Levi, 1963c: 569, f. 200-201 (Df).

Theridion dreisbachi Levi, 1959b: 96, f. 201-202 (Dm).

Theridion dubium Bradley, 1877: 116 (Df).

Theridion dukouensis Zhu, 1998: 133, f. 77A-D (Df).
Theridion dukouensis Song, Zhu & Chen, 1999: 137, f. 72M-N (f).

Theridion dulcineum Gertsch & Archer, 1942: 4, f. 11-12, 17-18 (Dmf).
Allotheridion dulcineum Archer, 1950: 20 (Tmf from Theridion).
Theridion dulcineum Levi, 1957a: 26, f. 69-70, 75-76 (mf).

Theridion durbanicum Lawrence, 1947: 18, f. 10 (Df).
Theridion durbanicum Dippenaar-Schoeman et al., 2021A: 30, 1 f. (f).

Theridion ecuadorense Levi, 1963c: 546, f. 92-93 (Df).

Phyllonethis electa O. Pickard-Cambridge, 1896a: 165, pl. 20, f. 3 (Dm, f is T. evexum per Levi, 1959b: 97; N.B.: Levi, 1959b: 161 regards T. electum not as valid species).
Allotheridion electum Archer, 1950: 20 (T from Theridion).

Theridion elegans Saitō, 1933b: 43, pl. 3, f. 10 (Df; preoccupied by Blackwall, 1862).
Theridion elegantissimum Roewer, 1942a: 480 (replacement name).
Theridion elegans Lee, 1966: 29, f. 7a-d (mf).
Theridion elegantissimum Yoshida, 1978b: 9, f. 18-21 (mf).
Theridion elegans Hu, 1984: 168, f. 174.1-2 (mf).

Theridion elevatum Thorell, 1881: 167 (Df).

Theridion maculipes Bryant, 1948a: 57, f. 3 (Df; preoccupied by Urquhart, 1887 [maculopes], see Theridion cruciferum) [urn:lsid:nmbe.ch:spidersp:055706].
Theridion elisabethae Roewer, 1951: 455 (replacement name).
Theridion elisabethae Levi, 1959b: 89, f. 87-88 (f).

Theridion elli Sedgwick, 1974: 352, f. 5-10 (Dmf).

Theridion ellicottense Dobyns & Bond, 1996: 90, f. 1-4 (Dmf).

Theridion emertoni Berland, 1920c: 157, f. 187-189 (Df).

Theridion epiensis Berland, 1938: 166, f. 107-109 (Df).

Theridion eremum Levi, 1963c: 548, f. 98-99 (Df).

Theridion morulum Simon, 1907d: 260 (Dmf; preoccupied by O. Pickard-Cambridge, 1898).
Theridion eugeni Roewer, 1942a: 477 (replacement name).

Theridion evexum Keyserling, 1884a: 65, pl. 3, f. 39 (Df).
Phyllonethis electa O. Pickard-Cambridge, 1896a: 165, pl. 20, f. 2 (f, misidentified per Levi, 1959b: 97).
Theridion electum F. O. Pickard-Cambridge, 1902a: 390, pl. 36, f. 27 (m, misidentified per Levi, 1959b: 98).
Theridion cabriolatum Franganillo, 1931d: 47 (Dm).
Theridion cabriolatum Bryant, 1936b: 325, pl. 23, f. 2-3 (m).
Allotheridion evexum Archer, 1950: 20 (T from Theridion).
Theridion evexum Levi, 1959b: 97, f. 124-135 (mf, S of Theridion cabriolatum).

Theridion excavatum F. O. Pickard-Cambridge, 1902a: 391, pl. 37, f. 5 (Df).
Theridion excavatum Levi, 1959b: 102, f. 206-207 (f).

Theridion exlinae Levi, 1963c: 580, f. 237-240 (Dmf).
Theridion exlineae Brignoli, 1983c: 423.

Theridion expallidatum O. Pickard-Cambridge, 1885b: 34 (Df).
Theridion expallidum Bonnet, 1959: 4471 (lapsus).

Theridion falcatum Gao & Li, 2014: 103, f. 87A-B, 88A-D, 89A-D (Dm).

Theridion familiare O. Pickard-Cambridge, 1871a: 418, pl. 55, f. 15 (Dm).
Theridion familiare Simon, 1881a: 81 (Df).
Theridion familiare Bösenberg, 1902: 105, pl. 9, f. 130 (mf).
Theridion familiare Wiehle, 1937: 170, f. 136-139 (mf).
Theridion familiare Locket & Millidge, 1953: 72, f. 46E, 47E (mf).
Theridion familiare Tystshenko, 1971: 150, f. 438 (f).
Theridion familiare Roberts, 1985: 184, f. 82e (mf).
Theridion familiare Hu & Li, 1987b: 273, f. 16.1-2 (f).
Theridion familiare Heimer & Nentwig, 1991: 304, f. 813 (mf).
Theridion familiare Hansen, 1992: 95, f. 1 (f).
Theridion familiare Roberts, 1995: 285, f. (mf).
Theridion familiare Roberts, 1998: 299, f. (mf).
Theridion familiare Hu, 2001: 579, f. 391.1-2 (f).
Theridion familiare Almquist, 2006: 97, f. 119a-d (mf).
Theridion familiare Wunderlich, 2011: 241, f. 8-10b (mf).
Theridion familiare Le Peru, 2011: 476, f. 815 (mf).
Theridion familiare Lecigne, 2020: 58, pl. 5B (m).
Theridion familiare Rückl & Střeštík, 2022: 5, f. 5 (m).

Theridion fastosum Keyserling, 1884a: 58, pl. 3, f. 34 (Dmf).
Theridion fastosum Levi, 1963c: 530, f. 21-23 (mf).

Theridion fatuhivaensis Berland, 1933b: 62, f. 40-41 (Df).

Theridion femorale Thorell, 1881: 173 (Df).

Theridion femoratissimum Caporiacco, 1949a: 387, f. 40 (Dm).

Theridion ferdinand Bellvert & Arnedo, in Bellvert, Gillespie & Arnedo, 2021: 15, f. 14A-H, 15A-B, 16A-G (Dmf).

Theridion fernandense Simon, 1907d: 256 (Df).

Theridion filum Levi, 1963c: 525, f. 1-2 (Dm).
Theridion antron Levi, 1963c: 528, f. 17-18 (Df) [urn:lsid:nmbe.ch:spidersp:008221].
Theridion filum Buckup, Marques & Rodrigues, 2010: 353 (Sf).

Theridion flabelliferum Urquhart, 1887: 106 (Df).
Theridion venustulum Urquhart, 1887: 107 (Dj).
Theridion flabelliferum Bryant, 1933b: 14, pl. 5, f. 48 (f).

Theridion flavonotatum Becker, 1879a: 79, pl. 1, f. 7-9 (Df).
Theridion pascagoulensis Becker, 1879a: 80, pl. 1, f. 10 (Df).
Theridion pascagoulense Keyserling, 1884a: 22, pl. 1, f. 8 (Df).
Theridion flavonotatum Keyserling, 1884a: 61, pl. 3, f. 36 (f).
Theridion lyra Keyserling, 1884a: 50, pl. 2, f. 28 (f, misidentification).
Theridion floridensis Banks, 1904c: 125 (Df).
Theridion atramontanum Banks, 1911: 444, pl. 35, f. 12 (Dmf).
Theridion dimachaerum Bishop & Crosby, 1926: 181, pl. 23, f. 28 (Dm).
Theridion flavonotatum Bishop & Crosby, 1926: 182, pl. 23, f. 29 (f, Dm).
Theridion floridense Bryant, 1940: 319, f. 85 (f, removed from S of T. lyricum).
Theridion floridensis Bryant, 1945c: 206, f. 3, 6 (m, Df).
Theridion flavonotatum Archer, 1946: 42 (S).
Allotheridion flavonotatum Archer, 1950: 20 (Tmf from Theridion).
Theridion flavonotatum Levi, 1957a: 34, f. 102-103, 107-109 (mf, S).
Theridion flavonotatum Breene et al., 1993: 63, f. 37A-B (mf).

Theridion flavo-ornatum Thorell, 1898: 304 (Dmf).

Theridion fornicatum Simon, 1884k: 22 (Dj).

Theridion frio Levi, 1959b: 110, f. 199-200 (Df).

Theridion frizzellorum Levi, 1963c: 550, f. 109-116 (Dmf).

Theridion frondeum Hentz, 1850: 275, pl. 9, f. 7 (Df).
Theridion brassicae Fitch, 1869: 563 (Df).
Theridion frondeum Emerton, 1882: 15, pl. 3, f. 1 (f, Dm).
Theridion frondeum Simon, 1894a: 536, f. 549 (m).
Theridion frondeum Emerton, 1902: 116, f. 274 (mf).
Theridion frondeum Kaston, 1945b: 5, f. 18-19 (mf).
Theridion frondeum Kaston, 1948: 105, f. 135-140, 167-169 (mf).
Allotheridion frondeum Archer, 1950: 19 (Tmf from Theridion).
Theridion frondeum Levi, 1957a: 81, f. 288-289, 298-299 (mf).
Theridion frondeum Shear, 1967: 6, f. 8-9 (m).
Theridion frondeum Paquin & Dupérré, 2003: 222, f. 2485-2487 (mf).
Theridion frondeum Agnarsson, 2004: 590, f. 75A-D, 76A-G (m).
Theridion frondeum Agnarsson, Coddington & Knoflach, 2007: 365, f. 105, 117 (m).

Theridion fruticum Simon, 1890a: 98 (Dmf).

Theridion furfuraceum Simon, 1914: 266, 270, 298, f. 527 (Dmf).
Theridion furfuraceum Wunderlich, 1995v: 693, f. 10-11 (m).
Theridion furfuraceum Le Peru, 2011: 476, f. 816 (mf).
Theridion furfuraceum Lecigne, 2014: 25, f. 14 (f).

Theridion fuscodecoratum Rainbow, 1916a: 63, pl. 16, f. 52-53 (Df).

Theridion fuscomaculatum Rainbow, 1916a: 55, pl. 15, f. 33-34 (Df).

Theridion gabardi Simon, 1895g: 142 (Dmf).

Theridion galerum Levi, 1959b: 85, f. 82-86 (Dmf).

Theridion gekkonicus Levy & Amitai, 1982a: 109, f. 56-57 (Df).
Theridion gekkonicum Levy, 1998b: 203, f. 388-389 (f).

Theridion geminipunctum Chamberlin, 1924b: 638, f. 78-79 (Dmf).
Theridion mohave Gertsch & Archer, 1942: 9, f. 8 (Df).
Theridion geminipunctum Levi, 1957a: 43, f. 135-136, 142-144 (mf, S).

Theridion genistae Simon, 1873a: 95 (Dmf).
Theridion genistae Wiehle, 1960c: 469, f. 14 (f).
Theridion genistae Brignoli, 1967e: 193, f. 11A-C (mf).
Theridion genistae Vanuytven, Van Keer & Poot, 1994: 2, f. 8 (m).
Paidiscura genistae Wunderlich, 2008b: 392 (Tmf from Theridion).
Theridion genistae Knoflach, Rollard & Thaler, 2009: 241, f. 34-40 (Tmf from Paidiscura).
Theridion genistae Le Peru, 2011: 477, f. 817 (mf).
Theridion genistae Wunderlich, 2021: 12, f. 33-35 (mf).

Theridion gertschi Levi, 1959b: 89, f. 91-92 (Df).

Theridion gibbum Rainbow, 1916a: 59, pl. 16, f. 43-45 (Df).

Theridion giraulti Rainbow, 1916a: 60, pl. 16, f. 46-47 (Df).

Theridion glaciale Caporiacco, 1934a: 145, pl. 2, f. 6 (Dmf).

Theridion glaucescens Becker, 1879a: 81, pl. 1, f. 11 (Df).
Theridion spirale Emerton, 1882: 10, pl. 1, f. 2 (Dmf).
Theridion glaucescens Keyserling, 1884a: 55, pl. 2, f. 32 (f).
Theridion spirale Keyserling, 1884a: 56, pl. 3, f. 33 (mf).
Theridion volatile Keyserling, 1884a: 60, pl. 3, f. 35 (Dmf).
Theridion spirale Emerton, 1902: 116, f. 270-273 (mf).
Steatoda spiralis F. O. Pickard-Cambridge, 1902a: 384.
Theridion spirale Comstock, 1940: 369, f. 355-356 (mf).
Theridion differens Muma, 1943: 65, pl. XIII, f. 2 (f).
Theridion spirale Kaston, 1945b: 5, f. 13 (f).
Theridion glaucescens Gertsch, in Archer, 1946: 47 (removed f from S of T. blandum Hentz, 1850, Sm).
Theridion spirale Kaston, 1948: 105, f. 126-127, 148-149 (mf).
Theridion glaucescens Levi, 1957a: 44, f. 152-153, 155-156 (mf).
Theridion glaucescens Levi, 1963c: 525 (S).
Theridion glaucescens Breene et al., 1993: 63, f. 36A-C (mf).
Theridion glaucescens Paquin & Dupérré, 2003: 222, f. 2488-2490 (mf).

Theridion glaucinum Simon, 1881a: 76 (Df).
Theridion glaucinum Knoflach, Rollard & Thaler, 2009: 243, f. 41-42 (f).
Theridion glaucinum Le Peru, 2011: 477, f. 819 (f).
Theridion glaucinum Naumova, 2020: 7, f. 13-14 (f).
Theridion glaucinum Méndez, Marquerie & Domènech, 2024: 90, f. 10A-C (f).

Theridion goodnightorum Levi, 1957a: 41, f. 129-130, 145-147 (Dmf).

Theridion gracilipes Urquhart, 1889a: 145 (Df).
Theridion gracilipes Bryant, 1933b: 14, pl. 4, f. 36, pl. 5, f. 44, 51 (f).

Theridion grallator Simon, 1900a: 456, pl. 15, f. 8 (Dm).
Theridion grallator Arnedo, Agnarsson & Gillespie, 2007: 342, f. 1B, 2E-F, 3C, N-O (mf).
Theridion grallator Bellvert, Gillespie & Arnedo, 2021: 17, f. 17A-H, 18A-B (mf).

Theridion gramineusum Zhu, 1998: 176, f. 112A-C (Df, lapsus).
Theridion gramineusum Song, Zhu & Chen, 1999: 137, f. 73A-B (f).

Theridion grammatophorus Simon, 1909e: 87 (Df).

Theridion grandiosum Levi, 1963c: 541, f. 72-75 (Dmf).

Theridion grecia Levi, 1959b: 105, f. 185-186 (Df).

Theridion gyirongensis Hu & Li, 1987b: 273, f. 16.3-4 (Df).
Theridion gyirongense Hu, 2001: 579, f. 392.1-2 (f).

Theridion hainanensis Zhu, 1998: 172, f. 109A-E (Dmf).
Theridion hainanensis Song, Zhu & Chen, 1999: 137, f. 73C-D, K-L (mf).

Theridion haleakalense Simon, 1900a: 453, pl. 15, f. 5 (Dmf).
Theridion haleakalense Bellvert, Gillespie & Arnedo, 2021: 17, f. 20A-H, 21A-B, 22A-H (mf).

Theridion hannoniae Denis, 1945a: 116, f. 10, 13, 16 (Dmf).
Theridion denisi Wunderlich, 1987a: 220, f. 580-585 (Dmf; preoccupied by Caporiacco, 1955, see Theridion positivum).
Theridion hannoniae Thaler & Noflatscher, 1990: 173, f. 30 (m).
Theridion hannoniae Bosmans, Vanuytven & Van Keer, 1994: 238, f. 16-22 (mf, S of Theridion denisi Wunderlich, 1987).
Theridion hannoniae Kloid, 1994: 56, f. 1-6 (f).
Theridion hannoniae Jäger, 1996a: 558, f. 4-5 (f).
Theridion hannoniae Roberts, 1998: 298, f. (mf).
Theridion hannoniae Knoflach, Rollard & Thaler, 2009: 244, f. 45-47, 50-52 (mf).
Theridion hannoniae Warmingham & Merrett, 2009: 347, f. 1-9 (mf).
Theridion hannoniae Crespo et al., 2009a: 474, f. 13 (f).
Theridion hannoniae Le Peru, 2011: 477, f. 820 (mf).
Theridion hannoniae Danisman, Öztürk & Ulusoy, 2011: 88, f. 1-4 (f).
Theridion hannoniae Canard & Cruveillier, 2016: 43 (year corrected from 1944 to 1945).
Theridion hannoniae Breitling, 2020: 358, f. 35I (m).
Allotheridion hannoniae Breitling, 2021a: 28.
Theridion hannoniae Iorio, 2023: 30, f. 26-27 (f).
Theridion hannoniae Abdel-Ghani, Hassan & Sallam, 2023: 36, f. 22a-b (mf).

Theridion harmsi Wunderlich, 2011: 249, f. 28-30b (Dmf).
Theridion harmsi Lecigne, 2017: 30, f. 5G-H, 15B-E (m).
Theridion harmsi Lecigne, 2018b: 77, f. 11F-I (m).
Theridion harmsi Lecigne, 2020: 60, pl. 5C (m).
Theridion harmsi Domènech et al., 2020: 165, f. 7a-g, 8e-f (mf).
Theridion harmsi Iorio, 2023: 31, f. 28-29 (m).

Theridion hartmeyeri Simon, 1908d: 410 (Df).

Theridion hassleri Levi, 1963c: 557, f. 139-140 (Df).

Theridion hebridisianum Berland, 1938: 165, f. 104-106 (Dmf).

Theridion helena Wunderlich, 2011: 250, f. 99-101 (Dmf).
Theridion helena Lecigne, 2021a: 23, f. 25a-c (mf).
Theridion helena Lecigne, 2023: 23, f. 16A-C (f).
Theridion helena Bosmans & Gavalas, 2023: 81, f. 40A-D (mf).

Theridion helophorum Thorell, 1895b: 98 (Df).
Theridion helophorum Workman, 1896: 70, pl. 70 (f).

Theridion hemerobius Simon, 1914: 264, 268, 297, f. 525 (Dmf).
Theridion berkeleyi Emerton, 1924b: 30, f. 8 (Dm).
Theridion zelotypum Kaston, 1948: 109, f. 151 (f, misidentified).
Theridion ornatum Tullgren, 1949: 45, f. 5a only (f, misidentified).
Theridion wallacei Schenkel, 1950b: 49, f. 13 (Df; preoccupied by Gertsch & Archer, 1942).
Theridion fieldi Levi, 1951: 3, f. 46 (Df).
Allotheridion fieldi Levi & Field, 1954: 441, f. 1 (f).
Theridion berkeleyi Levi, 1957a: 52, f. 166-167, 171-172, 174 (m, Sf).
Theridion berkeleyi Palmgren, 1974b: 24, f. 6.6 (f).
Theridion berkeleyi Kaston, 1977: 15, f. 8 (m).
Theridion antusi Kasal, 1982: 73, f. 1-5 (Dm).
Theridion pictum Levy & Amitai, 1982a: 96, f. 23-24 (f, misidentified).
Theridion hemerobium Vanuytven, Van Keer & Janssen, 1990: 16 (S).
Theridion hemerobius Blick, Sammorey & Martin, 1993: 29, f. 3-4, 6 (mf; N.B.: the specific name is a Greek two-ending adjective, not a noun in apposition, per H. D. Cameron, in litt.).
Theridion hemerobius Bosmans, Vanuytven & Van Keer, 1994: 236, f. 1-5 (mf, S).
Theridion hemerobius Roberts, 1995: 283, f. (mf).
Theridion hemerobius Roberts, 1998: 296, f. (mf).
Theridion hemerobius Levy, 1998b: 186, f. 353-354 (f).
Theridion hemerobium Paquin & Dupérré, 2003: 223, f. 2491-2493 (mf).
Theridion hemerobium Almquist, 2006: 98, f. 120a-f (mf).
Theridion hemerobium Wunderlich, 2008b: 396, f. 597 (m).
Theridion hemerobium Knoflach, Rollard & Thaler, 2009: 249, f. 57-58 (m).
Theridion hemerobius Le Peru, 2011: 478, f. 821 (mf).
Theridion hemerobium Danisman, Öztürk & Ulusoy, 2011: 88, f. 5-6 (m).
Theridion hemerobium Iorio, 2023: 31, f. 30, 31a-b (f).
Theridion hemerobium Domènech et al., 2023: 164, f. 8A-B (f).

Theridion hermonense Levy, 1991: 227, f. 1-2 (Df).
Theridion hermonense Levy, 1998b: 188, f. 355-356 (f).

Theridion hewitti Caporiacco, 1949a: 383, f. 37 (Df).

Theridion hidalgo Levi, 1957a: 43, f. 133-134, 139-141 (Dmf).
Theridion hidalgo Breene et al., 1993: 62, f. 35A-C (mf).

Theridion hierichonticus Levy & Amitai, 1982a: 102, f. 38-40 (Dm).
Theridion hierichonticum Levy, 1998b: 195, f. 370-372 (m).

Theridion hispidum O. Pickard-Cambridge, 1898a: 253, pl. 35, f. 5 (Dm).
Theridion hirsutum O. Pickard-Cambridge, 1898a: , pl. 34, f. 6 (m, lapsus).
Steatoda hispida F. O. Pickard-Cambridge, 1902a: 386.
Theridion hispidum Levi, 1959b: 86, f. 95-102 (m, Df).
Theridion hispidum Levi, 1963c: 530, f. 194-195 (f).

Theridion histrionicum Thorell, 1875a: 92 (Df).
Theridion histrionicum Thorell, 1875c: 54 (Df).

Theridion hondurense Levi, 1959b: 107, f. 193-194 (Df).

Theridion hopkinsi Berland, 1929b: 53, f. 31-32 (Df).
Theridion hopkinsi Marples, 1955a: 483, pl. 58, f. 12 (Dm).

Theridion petraeum Hu & Wu, 1989: 136, f. 108.1-2 (f, misidentified).
Theridion pinastri Hu & Wu, 1989: 137, f. 109 (m, misidentified).
Theridion hotanensis Zhu & Zhou, 1993: 84, f. 1-6 (Dmf).
Theridion hotaensis Zhu, 1998: 132, f. 76A-F (mf).
Theridion hotanensis Song, Zhu & Chen, 1999: 137, f. 73E-F, M-N (mf).
Theridion hotanensis Esyunin & Stepina, 2014b: 49, f. 16-17 (f).
Theridion hotanense Sekhar, Domichan & Sunil Jose, 2021: 173, f. 1-5 (f).
Theridion hotanense Zamani et al., 2021b: 295, f. 12C-F (f).

Theridion huanuco Levi, 1963c: 552, f. 108 (Dm).

Theridion hufengensis Tang, Yin & Peng, 2005a: 524, f. 1-3 (Df).
Theridion hufengense Yin et al., 2012: 408, f. 179a-c (f).

Theridion humboldti Levi, 1967b: 25, f. 7-9 (Df).

Theridion hummeli Schenkel, 1936b: 35, f. 10 (Df).

Theridion hupingense Yin, in Yin et al., 2012: 409, f. 180a-c (Df).

Theridion idiotypum Rainbow, 1917a: 484, pl. 32, f. 2-4 (Dm).