| 2021-11-26 | New species inserted | Idiops mocambo Fonseca-Ferreira, Guadanucci & Brescovit, 2021 | Brazil | | Fonseca-Ferreira et al., 2021 |
| 2021-11-26 | New taxonomic reference entry | Idiops harti (Pocock, 1893) | Trinidad and Tobago | | Fonseca-Ferreira et al., 2021 |
| 2021-11-26 | Species distribution update | Idiops harti (Pocock, 1893) | Trinidad and Tobago | (Old value) | Fonseca-Ferreira et al., 2021 |
| 2021-11-26 | New taxonomic reference entry | Idiops guri Fonseca-Ferreira, Guadanucci & Brescovit, 2021 | Brazil | | Fonseca-Ferreira et al., 2021 |
| 2021-11-26 | New species inserted | Idiops guri Fonseca-Ferreira, Guadanucci & Brescovit, 2021 | Brazil | | Fonseca-Ferreira et al., 2021 |
| 2021-11-26 | New taxonomic reference entry | Idiops germaini Simon, 1892 | Brazil | | Fonseca-Ferreira et al., 2021 |
| 2021-11-26 | New taxonomic reference entry | Idiops duocordibus Fonseca-Ferreira, Guadanucci & Brescovit, 2021 | Brazil | | Fonseca-Ferreira et al., 2021 |
| 2021-11-26 | New species inserted | Idiops duocordibus Fonseca-Ferreira, Guadanucci & Brescovit, 2021 | Brazil | | Fonseca-Ferreira et al., 2021 |
| 2021-11-26 | New taxonomic reference entry | Idiops clarus (Mello-Leitão, 1946) | Uruguay, Argentina | | Fonseca-Ferreira et al., 2021 |
| 2021-11-26 | New taxonomic reference entry | Idiops carajas Fonseca-Ferreira, Zampaulo & Guadanucci, 2017 | Brazil | | Fonseca-Ferreira et al., 2021 |
| 2021-11-26 | New taxonomic reference entry | Idiops camelus (Mello-Leitão, 1937) | Brazil | | Fonseca-Ferreira et al., 2021 |
| 2021-11-26 | New taxonomic reference entry | Idiops cambridgei Ausserer, 1875 | Colombia | | Fonseca-Ferreira et al., 2021 |
| 2021-11-26 | Species synonymy | Idiops argus Simon, 1889 | Venezuela | Idiops fulvipes synonymized with Idiops argus | Fonseca-Ferreira et al., 2021 |
| 2021-11-26 | Species updated | Idiops fulvipes Simon, 1889 | Venezuela | Status: Synonym (Old value) | Fonseca-Ferreira et al., 2021 |
| 2021-11-26 | New taxonomic reference entry | Idiops argus Simon, 1889 | Venezuela | | Fonseca-Ferreira et al., 2021 |
| 2021-11-26 | New taxonomic reference entry | Idiops fuscus Perty, 1833 | Brazil | | Fonseca-Ferreira et al., 2021 |
| 2021-11-26 | First description of female | Idiops fuscus Perty, 1833 | Brazil | (Old value) | Fonseca-Ferreira et al., 2021 |
| 2021-11-25 | Reference included | | | Sugawara, Ihara & Nakano, 2021b |
| 2021-11-25 | New taxonomic reference entry | Cybaeus fujisanus Yaginuma, 1972 | Japan | | Sugawara, Ihara & Nakano, 2021b |
| 2021-11-25 | First description of male | Cybaeus fujisanus Yaginuma, 1972 | Japan | (Old value) | Sugawara, Ihara & Nakano, 2021b |
| 2021-11-25 | Species distribution update | Heriaeus buffoni (Audouin, 1826) | Canary Is., Morocco, Algeria, Egypt, Israel, Turkey, Iraq, Iran | (Old value) | |
| 2021-11-25 | Species distribution update | Heriaeus numidicus Loerbroks, 1983 | Spain, Morocco, Algeria, Libya | (Old value) | |
| 2021-11-25 | Reference included | | | Mezőfi, 2021 |
| 2021-11-25 | New taxonomic reference entry | Icius subinermis Simon, 1937 | Mediterranean, Germany, Hungary, Romania. Introduced to USA | | Mezőfi, 2021 |
| 2021-11-25 | Species distribution update | Icius subinermis Simon, 1937 | Mediterranean, Germany, Hungary, Romania. Introduced to USA | (Old value) | Mezőfi, 2021 |
| 2021-11-24 | Taxon is nomen dubium | Flacillula purpurea (Dyal, 1935) | Pakistan | Flacillula purpurea (Dyal, 1935) declared a nomen dubium | Bopearachchi & Benjamin, 2021 |
| 2021-11-24 | New taxonomic reference entry | Flacillula purpurea (Dyal, 1935) | Pakistan | | Bopearachchi & Benjamin, 2021 |
| 2021-11-24 | New taxonomic reference entry | Flacillula incognita Żabka, 1985 | Vietnam | | Bopearachchi & Benjamin, 2021 |
| 2021-11-24 | New taxonomic reference entry | Flacillula albofrenata (Simon, 1905) | Indonesia (Java) | | Bopearachchi & Benjamin, 2021 |
| 2021-11-24 | Reference included | | | Massa & Ribera, 2021 |
| 2021-11-24 | New taxonomic reference entry | Loxosceles mrazig Ribera & Planas, 2009 | Algeria, Tunisia | | Massa & Ribera, 2021 |
| 2021-11-24 | Species distribution update | Loxosceles mrazig Ribera & Planas, 2009 | Algeria, Tunisia | (Old value) | Massa & Ribera, 2021 |
| 2021-11-24 | First description of female | Loxosceles mrazig Ribera & Planas, 2009 | Algeria, Tunisia | (Old value) | Massa & Ribera, 2021 |
| 2021-11-24 | New taxonomic reference entry | Loxosceles imazighen Ribera & Massa, 2021 | Morocco | | Massa & Ribera, 2021 |
| 2021-11-24 | New species inserted | Loxosceles imazighen Ribera & Massa, 2021 | Morocco | | Massa & Ribera, 2021 |
| 2021-11-24 | Species distribution update | Scotinotylus vettonicus Barrientos & Hernández-Corral, 2020 | Portugal, Spain, France | (Old value) | Déjean & Danflous, 2021 |
| 2021-11-24 | Reference included | | | Déjean & Danflous, 2021 |
| 2021-11-24 | New taxonomic reference entry | Scotinotylus vettonicus Barrientos & Hernández-Corral, 2020 | Portugal, Spain, France | | Déjean & Danflous, 2021 |
| 2021-11-24 | New taxonomic reference entry | Scotinotylus evansi (O. Pickard-Cambridge, 1894) | Greenland, Europe | | Déjean & Danflous, 2021 |
| 2021-11-24 | Reference included | | | Jacquet & Oger, 2021 |
| 2021-11-24 | New taxonomic reference entry | Porrhomma montanum Jackson, 1913 | Europe, Georgia, Russia (Europe to Far East), Korea, Japan | | Jacquet & Oger, 2021 |
| 2021-11-24 | New taxonomic reference entry | Peponocranium praeceps Miller, 1943 | France, Germany to Russia (Europe), Finland | | Jacquet & Oger, 2021 |
| 2021-11-24 | Species distribution update | Peponocranium praeceps Miller, 1943 | France, Germany to Russia (Europe), Finland | (Old value) | Jacquet & Oger, 2021 |
| 2021-11-24 | Reference included | | | Déjean & Oger, 2021 |
| 2021-11-24 | New taxonomic reference entry | Moebelia penicillata (Westring, 1851) | Europe, Caucasus | | Déjean & Oger, 2021 |
| 2021-11-24 | New taxonomic reference entry | Moebelia berolinensis (Wunderlich, 1969) | France, Germany | | Déjean & Oger, 2021 |
| 2021-11-24 | Species distribution update | Moebelia berolinensis (Wunderlich, 1969) | France, Germany | (Old value) | Déjean & Oger, 2021 |
| 2021-11-24 | Reference included | | | Courtial et al., 2021 |
| 2021-11-24 | New taxonomic reference entry | Phaeocedus hebraeus Levy, 1999 | Greece, Cyprus, Israel | | Courtial et al., 2021 |
| 2021-11-24 | New taxonomic reference entry | Phaeocedus braccatus (L. Koch, 1866) | Europe, Turkey, Caucasus, Russia (Europe to Far East), Iran, Kazakhstan, Central Asia, China, Japan | | Courtial et al., 2021 |