In synonymy:
Dicyphus Menge, 1869 = Hypomma Dahl, 1886 (Simon, 1926: 515)
Enidia Smith, 1904 = Hypomma Dahl, 1886 (Simon, 1926: 515)
Falconeria Smith, 1904 = Hypomma Dahl, 1886 (Simon, 1926: 515)
Smitheria Coolidge, 1909 = Hypomma Dahl, 1886 (Simon, 1926: 515, automatically with its replaced name Falconeria)

type Theridion bituberculatum Wider, 1834; gender neuter

N.B.: considered a senior synonym Dicyphus Menge, 1869: 221 [urn:lsid:nmbe.ch:spidergen:05450] (type D. tumidus Menge, 1869 = Hypomma bituberculatum (Wider, 1834)), of Enidia Smith, 1904: 115 [urn:lsid:nmbe.ch:spidergen:05449] and of Falconeria Smith, 1904: 115 [urn:lsid:nmbe.ch:spidergen:05447] (type Neriene cornuta Blackwall, 1833) by Simon, 1926: 515 (syn. of Enidia confirmed by  Denis, 1968a: 7); Enidia is a replacement name of Dicyphus, preoccupied in Hemiptera by Fieber, 1858; Falconeria is preoccupied in Reptilia by Theobald, 1868 and replaced by Smitheria Coolidge, 1909a: 126 [urn:lsid:nmbe.ch:spidergen:05448]; not a senior synonym of Kratochviliella Miller, 1938 (Wunderlich & Nicolai, 1984: 53, contra Millidge, 1977: 28, who considered it a possible synonym of Hypomma).

Transferred to other genera:
Hypomma aemonicum Deltshev, 2005 -- see Walckenaerianus

In synonymy:
Hypomma bilobatum (Banks, 1896, T from Lophocarenum) = Hypomma marxi (Keyserling, 1886) (Crosby & Bishop, 1933b: 130).
Hypomma cilunculum (Menge, 1869, T from Dicyphus) = Hypomma cornutum (Blackwall, 1833) (Simon, 1884a: 561, sub Gonatium).
Hypomma mallezi Denis, 1943 = Hypomma fulvum (Bösenberg, 1902) (Denis, 1944c: 129, sub Enidia).
Hypomma tumidum (Menge, 1871, T from Dicyphus) = Hypomma bituberculatum (Wider, 1834) (Simon, 1884a: 559, sub Gonatium).

Hypomma affinis Schenkel, 1930b: 15, f. 5a-e (Dm).
Hypomma affinis Saito, 1982c: 12, f. 8, 26, 32 (m).
Hypomma affine Ono, Matsuda & Saito, 2009: 272, f. 165-171 (m, Df).

Theridion bituberculatum Wider, 1834: 216, pl. 15, f. 2 (Dmf).
Argus bituberculatus Walckenaer, 1841: 363.
Erigone bituberculata Westring, 1861: 210.
Neriene bituberculata Blackwall, 1864a: 268, pl. 18, f. 182 (mf).
Micryphantes bituberculatus Ohlert, 1865: 62.
Dicyphus tumidus Menge, 1871: 221, pl. 43, f. 121 (Dmf) [urn:lsid:nmbe.ch:spidersp:063280].
Erigone bituberculata Hansen, 1882: 32, pl. 2, f. 7.
Dicyphus bituberculatus Förster & Bertkau, 1883: 270.
Gonatium bituberculatum Simon, 1884a: 559, f. 363-366 (mf, S of Dicyphus tumidus).
Hypomma bituberculata Dahl, 1886: 88.
Hypomma bituberculatum Chyzer & Kulczyński, 1894: 100, pl. 4, f. 13 (mf).
Gonatium bituberculatum Simon, 1894a: 605, f. 724-725 (m).
Gonatium bituberculatum Becker, 1896: 109, pl. 10, f. 10 (mf).
Dicyphus bituberculatus Bösenberg, 1902: 163, pl. 14, f. 222 (mf).
Enidia bituberculata Smith, 1904: 115 (generic replacement name).
Hypomma bituberculatum Simon, 1926: 435, 515, f. 770 (mf).
Hypomma bituberculatum Bristowe, 1931d: 1404, f. 4 (mf).
Dismodicus bituberculatum Hull, 1933: 108.
Hypomma bituberculatum Miller, 1947: 29, pl. VII, f. 6 (f).
Hypomma bituberculatum Locket & Millidge, 1953: 223, f. 137A-B, F-G, 138C (mf).
Enidia bituberculata Wiehle, 1960a: 290, f. 529-537 (mf).
Enidia bituberculata Merrett, 1963b: 416, f. 95A-C (m).
Hypomma bituberculatum Tystshenko, 1971: 246, f. 798, 803 (mf).
Enidia bituberculata Miller, 1971: 259, pl. LII, f. 31-33 (f).
Enidia bituberculata Palmgren, 1976: 58, f. 6.1-5 (mf).
Hypomma bituberculatum Millidge, 1977: 28, f. 94 (m).
Hypomma bituberculatum Roberts, 1987: 44, f. 13d, 16j (mf).
Hypomma bituberculatum Heimer & Nentwig, 1991: 172, f. 464 (mf).
Hypomma bituberculatum Song, Zhu & Chen, 1999: 171, f. 99D (m).
Hypomma bituberculatum Marusik & Kunt, 2009b: 84, f. 1-2 (m).
Hypomma bituberculatum Frick, Nentwig & Kropf, 2010: 309, Suppl. pl. 14A-O (mf).
Hypomma bituberculatum Marusik, Mikhailov & Omelko, 2015: 119 (S of Micryphantes miniatus; rejected by Breitling, 2015b: 480, see Micryphantes miniatus, nomen dubium).

Enidia brevitibialis Wunderlich, 1980e: 329, f. 32-37 (Dm).
Hypomma brevitibiale Brignoli, 1983c: 342.

Hypomma clypeatum Roewer, 1942b: 248, f. 4a-c (Df).

Enidia coalescera Kritscher, 1966b: 377, f. 2-7 (Dmf).
Hypomma coalescera Brignoli, 1983c: 342.

Neriene cornuta Blackwall, 1833: 190 (Dm).
Neriene cornuta Blackwall, 1864a: 267, pl. 18, f. 181 (m, Df).
Dicyphus cilunculus Menge, 1869: 222, pl. 44, f. 122 (Dmf) [urn:lsid:nmbe.ch:spidersp:063281].
Dicyphus cornutus Bertkau, 1880b: 307.
Erigone cornuta Dahl, 1883: 45.
Gonatium cornutum Simon, 1884a: 561, f. 367-370 (mf, S of Dicyphus cilunculus).
Dicyphus cornutus Chyzer & Kulczyński, 1894: 100, pl. 4, f. 14 (mf).
Gonatium cornutum Becker, 1896: 111, pl. 11, f. 3 (mf).
Dicyphus cornutus Bösenberg, 1902: 163, pl. 14, f. 220 (mf).
Falconeria cornuta Smith, 1904: 115.
Smitheria cornuta Coolidge, 1909a: 126 (generic replacement name).
Hypomma cornutum Simon, 1926: 435, 515, f. 770 (mf).
Dismodicus cornutus Hull, 1933: 108.
Hypomma cornutum Miller, 1947: 38, pl. VII, f. 7 (f).
Hypomma cornutum Locket & Millidge, 1953: 225, f. 137C-E, 138D (mf).
Enidia cornuta Wiehle, 1960a: 299, f. 545-552 (mf).
Hypomma cornutum Tystshenko, 1971: 246, f. 797, 806 (mf).
Enidia cornuta Miller, 1971: 270, pl. LII, f. 29-30 (mf).
Enidia cornuta Palmgren, 1976: 59, f. 6.8-11 (mf).
Hypomma cornutum Roberts, 1987: 46, f. 14b, 17b (mf).
Enidia cornuta Polenec, 1988: 31, f. 4-5 (f).
Hypomma cornuta Tanasevitch, 1990: 103, f. 22.42, 24.47, 28.5-6 (mf).
Hypomma cornutum Heimer & Nentwig, 1991: 172, f. 465 (mf).
Hypomma cornutum Millidge, 1993c: 147, f. 41 (f).
Hypomma cornutum Jäger, 2006d: 3, f. 1-3n-s (mf).
Hypomma cornutum Bellvert Bantí, 2016: 155, f. 1-3 (mf).
Hypomma cornutum Koç, Sancak & Etirli, 2020: 214, f. 1A-D (mf).

Gonatium fulvum Bösenberg, 1902: 162, pl. 14, f. 219 (Df).
Hypomma fulvum Schenkel, 1925d: 293, f. 7 (f, Dm).
Hypomma mallezi Denis, 1943a: 106, f. 1-3 (Df) [urn:lsid:nmbe.ch:spidersp:062972].
Enidia fulva Denis, 1944c: 129 (S of Hypomma mallezi).
Enidia fulva Denis, 1945d: 23, f. 1-2 (f).
Hypomma fulvum Locket & Millidge, 1953: 225, f. 138A-B, E, 254I (mf).
Enidia fulva Tullgren, 1955: 350, f. 53a-d (mf).
Enidia fulva Wiehle, 1960a: 295, f. 539-544 (mf).
Hypomma fulvum Tystshenko, 1971: 246, f. 800, 804 (mf).
Enidia fulva Miller, 1971: 258, pl. LII, f. 28 (f).
Enidia fulva Dziabaszewski, 1975: 106, f. 1 (f).
Enidia fulva Palmgren, 1976: 60, f. 6.6-7 (mf).
Hypomma fulvum Roberts, 1987: 46, f. 14a, 17a (mf).
Hypomma fulvum Heimer & Nentwig, 1991: 172, f. 463 (mf).
Hypomma fulvum Naumova, Blagoev & Deltshev, 2021: 239, f. 11A-D (f).

Erigone maxii Keyserling, 1886b: 152, pl. 16, f. 218 (Dm, lapsus, dedicated to Marx).
Dicyphus bilobatus Banks, 1896a: 63 (Dm) [urn:lsid:nmbe.ch:spidersp:063282].
Hypomma bilobata Crosby, 1905a: 310.
Lophocarenum bilobatum Emerton, 1911: 390, pl. 2, f. 1 (m).
Hypomma marxi Crosby & Bishop, 1933b: 130, pl. 4, f. 88-92 (m, Df, S of Lophocarenum bilobatum).
Hypomma marxi Paquin & Dupérré, 2003: 112, f. 1138-1141 (mf).

Hypomma nordlandica Chamberlin & Ivie, 1947b: 44, f. 99 (Df).
Hypomma nordlandicum Brignoli, 1983c: 342.

Hypomma subarctica Chamberlin & Ivie, 1947b: 44, f. 41-44 (Dmf).
Hypomma subarcticum Brignoli, 1983c: 342.