| 2021-05-09 | New taxonomic reference entry | Scytodes thoracica (Latreille, 1802) | Europe, North Africa, Turkey, Iran, temperate Asia to China, Korea, Japan. Introduced to North America, Argentina, South Africa, India, Australia, New Zealand | | Rozwałka & Czaja, 2021a |
| 2021-05-08 | Species distribution update | Spintharus rallorum Chomitz & Agnarsson, 2018 | Puerto Rico, Saint Kitts and Nevis | (Old value) | Agnarsson et al., 2018 |
| 2021-05-06 | Species distribution update | Pritha pallida (Kulczyński, 1897) | Madeira, Portugal, Spain, Italy, Croatia, Greece, Georgia | (Old value) | Legittimo et al., 2017 |
| 2021-05-06 | Species distribution update | Amaurobius scopolii Thorell, 1871 | France, Italy | (Old value) | Ballarin & Pantini, 2017 |
| 2021-05-06 | Species distribution update | Ipa terrenus (L. Koch, 1879) | Spain, France, Italy, Czechia, Slovakia, Eastern Europe, Turkey, Caucasus, Russia (Europe to South Siberia) | (Old value) | |
| 2021-05-06 | Reference included | | | Rodrigues, Marta & Figueiredo, 2021 |
| 2021-05-06 | New taxonomic reference entry | Euryopis catarinensis Rodrigues, Marta & Figueiredo, 2021 | Brazil | | Rodrigues, Marta & Figueiredo, 2021 |
| 2021-05-06 | New taxonomic reference entry | Euryopis boliviensis Rodrigues, Marta & Figueiredo, 2021 | Bolivia | | Rodrigues, Marta & Figueiredo, 2021 |
| 2021-05-06 | New taxonomic reference entry | Euryopis nasuta Rodrigues, Marta & Figueiredo, 2021 | Brazil | | Rodrigues, Marta & Figueiredo, 2021 |
| 2021-05-06 | New taxonomic reference entry | Euryopis candiota Rodrigues, Marta & Figueiredo, 2021 | Brazil | | Rodrigues, Marta & Figueiredo, 2021 |
| 2021-05-06 | Species distribution update | Euryopis spinifera (Mello-Leitão, 1944) | Brazil, Argentina | (Old value) | Rodrigues, Marta & Figueiredo, 2021 |
| 2021-05-06 | New species inserted | Euryopis catarinensis Rodrigues, Marta & Figueiredo, 2021 | Brazil | | Rodrigues, Marta & Figueiredo, 2021 |
| 2021-05-06 | New species inserted | Euryopis boliviensis Rodrigues, Marta & Figueiredo, 2021 | Bolivia | | Rodrigues, Marta & Figueiredo, 2021 |
| 2021-05-06 | New species inserted | Euryopis nasuta Rodrigues, Marta & Figueiredo, 2021 | Brazil | | Rodrigues, Marta & Figueiredo, 2021 |
| 2021-05-06 | New species inserted | Euryopis candiota Rodrigues, Marta & Figueiredo, 2021 | Brazil | | Rodrigues, Marta & Figueiredo, 2021 |
| 2021-05-05 | Species distribution update | Theridion pinicola Simon, 1873 | Spain, France (Corsica), Morocco, Algeria, Tunisia | (Old value) | Barrientos et al., 2019a |
| 2021-05-05 | Species distribution update | Textrix intermedia Wunderlich, 2008 | Spain, France | (Old value) | Barrientos et al., 2019a |
| 2021-05-05 | Reference included | | | Perger, Rubio & Haddad, 2021 |
| 2021-05-05 | New taxonomic reference entry | Synemosyna nicaraguaensis Cutler, 1993 | Nicaragua, Bolivia | | Perger, Rubio & Haddad, 2021 |
| 2021-05-05 | First description of male | Synemosyna nicaraguaensis Cutler, 1993 | Nicaragua, Bolivia | (Old value) | Perger, Rubio & Haddad, 2021 |
| 2021-05-05 | Species distribution update | Synemosyna nicaraguaensis Cutler, 1993 | Nicaragua, Bolivia | (Old value) | Perger, Rubio & Haddad, 2021 |
| 2021-05-05 | New taxonomic reference entry | Synemosyna myrmeciaeformis (Taczanowski, 1871) | Venezuela, Bolivia, French Guiana, Brazil | | Perger, Rubio & Haddad, 2021 |
| 2021-05-05 | Species distribution update | Synemosyna myrmeciaeformis (Taczanowski, 1871) | Venezuela, Bolivia, French Guiana, Brazil | (Old value) | Perger, Rubio & Haddad, 2021 |
| 2021-05-05 | Species distribution update | Synemosyna aurantiaca (Mello-Leitão, 1917) | Bolivia, Brazil, Uruguay, Argentina, Colombia?, Trinidad? | (Old value) | Perger, Rubio & Haddad, 2021 |
| 2021-05-05 | Reference included | | | Lee, Yoo & Kim, 2021a |
| 2021-05-05 | New taxonomic reference entry | Cybaeus pseudoauriculatus Lee, Yoo & Kim, 2021 | Korea | | Lee, Yoo & Kim, 2021a |
| 2021-05-05 | New taxonomic reference entry | Cybaeus vanimaculatus Lee, Yoo & Kim, 2021 | Korea | | Lee, Yoo & Kim, 2021a |
| 2021-05-05 | New taxonomic reference entry | Cybaeus culter Lee, Yoo & Kim, 2021 | Korea | | Lee, Yoo & Kim, 2021a |
| 2021-05-05 | New taxonomic reference entry | Cybaeus yeongwolensis Lee, Yoo & Kim, 2021 | Korea | | Lee, Yoo & Kim, 2021a |
| 2021-05-05 | New species inserted | Cybaeus pseudoauriculatus Lee, Yoo & Kim, 2021 | Korea | | Lee, Yoo & Kim, 2021a |
| 2021-05-05 | New species inserted | Cybaeus vanimaculatus Lee, Yoo & Kim, 2021 | Korea | | Lee, Yoo & Kim, 2021a |
| 2021-05-05 | New species inserted | Cybaeus culter Lee, Yoo & Kim, 2021 | Korea | | Lee, Yoo & Kim, 2021a |
| 2021-05-05 | New species inserted | Cybaeus yeongwolensis Lee, Yoo & Kim, 2021 | Korea | | Lee, Yoo & Kim, 2021a |
| 2021-05-05 | Reference included | | | Fomichev & Marusik, 2021a |
| 2021-05-05 | New taxonomic reference entry | Zelotes gussakovskyi Charitonov, 1951 | Tajikistan | | Fomichev & Marusik, 2021a |
| 2021-05-05 | New taxonomic reference entry | Zelotes potanini Schenkel, 1963 | Russia (Urals to Far East), Kazakhstan, Iran, China, Korea, Japan | | Fomichev & Marusik, 2021a |
| 2021-05-05 | New taxonomic reference entry | Zelotes puritanus Chamberlin, 1922 | North America, Europe, Turkey, Russia (Europe to Far East), Kazakhstan, Iran | | Fomichev & Marusik, 2021a |
| 2021-05-05 | New taxonomic reference entry | Zelotes mikhailovi Marusik, 1995 | Russia (Europe), Kazakhstan, Mongolia | | Fomichev & Marusik, 2021a |
| 2021-05-05 | New taxonomic reference entry | Zelotes khatlonicus Fomichev & Marusik, 2021 | Tajikistan | | Fomichev & Marusik, 2021a |
| 2021-05-05 | New taxonomic reference entry | Zelotes anatolyi Fomichev & Marusik, 2021 | Tajikistan | | Fomichev & Marusik, 2021a |
| 2021-05-05 | New taxonomic reference entry | Poecilochroa hamipalpis (Kroneberg, 1875) | Uzbekistan, Tajikistan | | Fomichev & Marusik, 2021a |
| 2021-05-05 | Species transferred to new genus | Poecilochroa hamipalpis (Kroneberg, 1875) | Uzbekistan, Tajikistan | Species transferred from Echemus to Poecilochroa | Fomichev & Marusik, 2021a |
| 2021-05-05 | Species distribution update | Poecilochroa hamipalpis (Kroneberg, 1875) | Uzbekistan, Tajikistan | (Old value) | Fomichev & Marusik, 2021a |
| 2021-05-05 | New taxonomic reference entry | Nomisia palaestina (O. Pickard-Cambridge, 1872) | Greece, Turkey, Syria, Israel, Tajikistan | | Fomichev & Marusik, 2021a |
| 2021-05-05 | Species distribution update | Nomisia palaestina (O. Pickard-Cambridge, 1872) | Greece, Turkey, Syria, Israel, Tajikistan | (Old value) | Fomichev & Marusik, 2021a |
| 2021-05-05 | New taxonomic reference entry | Drassodex tajikistanicus Fomichev & Marusik, 2021 | Tajikistan | | Fomichev & Marusik, 2021a |
| 2021-05-05 | New species inserted | Zelotes khatlonicus Fomichev & Marusik, 2021 | Tajikistan | | Fomichev & Marusik, 2021a |
| 2021-05-05 | New species inserted | Zelotes anatolyi Fomichev & Marusik, 2021 | Tajikistan | | Fomichev & Marusik, 2021a |
| 2021-05-05 | New species inserted | Drassodex tajikistanicus Fomichev & Marusik, 2021 | Tajikistan | | Fomichev & Marusik, 2021a |
| 2021-05-05 | Reference included | | | Bodkhe et al., 2021 |