| 2021-12-17 | New species inserted | Pimoa wulipoensis Irfan, Wang & Zhang, 2021 | China | | Irfan, Wang & Zhang, 2021 |
| 2021-12-17 | New species inserted | Pimoa exigua Irfan, Wang & Zhang, 2021 | China | | Irfan, Wang & Zhang, 2021 |
| 2021-12-17 | Reference included | | | He & Lin, 2021 |
| 2021-12-17 | New taxonomic reference entry | Singaporemma huilongense Lin, 2021 | China | | He & Lin, 2021 |
| 2021-12-17 | New taxonomic reference entry | Tetrablemma gongshan Lin, 2021 | China | | He & Lin, 2021 |
| 2021-12-17 | New species inserted | Singaporemma huilongense Lin, 2021 | China | | He & Lin, 2021 |
| 2021-12-17 | New species inserted | Tetrablemma gongshan Lin, 2021 | China | | He & Lin, 2021 |
| 2021-12-17 | Reference included | | | Liang et al., 2021b |
| 2021-12-17 | New taxonomic reference entry | Otacilia pinglong Liang, Q. Li, Yin, H. Li & Xu, 2021 | China | | Liang et al., 2021b |
| 2021-12-17 | New taxonomic reference entry | Aculithus pseudofabiformis (Liang, Q. Li, Yin, H. Li & Xu, 2021) | China | | Liang et al., 2021b |
| 2021-12-17 | New species inserted | Otacilia pinglong Liang, Q. Li, Yin, H. Li & Xu, 2021 | China | | Liang et al., 2021b |
| 2021-12-17 | New species inserted | Aculithus pseudofabiformis (Liang, Q. Li, Yin, H. Li & Xu, 2021) | China | | Liang et al., 2021b |
| 2021-12-17 | Reference included | | | Wang et al., 2021f |
| 2021-12-17 | New taxonomic reference entry | Ectatosticta rulai Lin & Li, 2021 | China | | Wang et al., 2021f |
| 2021-12-17 | New taxonomic reference entry | Ectatosticta songpanensis Wang, Zhao, Irfan & Zhang, 2021 | China | | Wang et al., 2021f |
| 2021-12-17 | New taxonomic reference entry | Ectatosticta pingwuensis Wang, Zhao, Irfan & Zhang, 2021 | China | | Wang et al., 2021f |
| 2021-12-17 | New taxonomic reference entry | Ectatosticta nyingchiensis Wang, Zhao, Irfan & Zhang, 2021 | China | | Wang et al., 2021f |
| 2021-12-17 | New taxonomic reference entry | Ectatosticta davidi (Simon, 1889) | China | | Wang et al., 2021f |
| 2021-12-17 | New taxonomic reference entry | Ectatosticta zhouzhiensis Wang, Zhao, Irfan & Zhang, 2021 | China | | Wang et al., 2021f |
| 2021-12-17 | New taxonomic reference entry | Ectatosticta menyuanensis Wang, Zhao, Irfan & Zhang, 2021 | China | | Wang et al., 2021f |
| 2021-12-17 | Taxonomic reference added from other taxon | Ectatosticta nyingchiensis Wang, Zhao, Irfan & Zhang, 2021 | China | (Old value) | |
| 2021-12-17 | Taxonomic reference assigned to new taxon | Ectatosticta dapeng Lin & Li, 2021 | China | Taxonomic reference entry assigned to Ectatosticta nyingchiensis Wang, Zhao, Irfan & Zhang, 2021 | |
| 2021-12-17 | New taxonomic reference entry | Ectatosticta furax Wang, Zhao, Irfan & Zhang, 2021 | China | | Wang et al., 2021f |
| 2021-12-17 | Taxonomic reference added from other taxon | Ectatosticta songpanensis Wang, Zhao, Irfan & Zhang, 2021 | China | (Old value) | |
| 2021-12-17 | Taxonomic reference assigned to new taxon | Ectatosticta rulai Lin & Li, 2021 | China | Taxonomic reference entry assigned to Ectatosticta songpanensis Wang, Zhao, Irfan & Zhang, 2021 | |
| 2021-12-17 | Taxonomic reference added from other taxon | Ectatosticta pingwuensis Wang, Zhao, Irfan & Zhang, 2021 | China | (Old value) | |
| 2021-12-17 | Taxonomic reference assigned to new taxon | Ectatosticta rulai Lin & Li, 2021 | China | Taxonomic reference entry assigned to Ectatosticta pingwuensis Wang, Zhao, Irfan & Zhang, 2021 | |
| 2021-12-17 | Species updated | Ectatosticta songpanensis Wang, Zhao, Irfan & Zhang, 2021 | China | Removed synonymy (Old value) | Wang et al., 2021f |
| 2021-12-17 | Species updated | Ectatosticta pingwuensis Wang, Zhao, Irfan & Zhang, 2021 | China | Removed synonymy (Old value) | Wang et al., 2021f |
| 2021-12-17 | Species updated | Ectatosticta nyingchiensis Wang, Zhao, Irfan & Zhang, 2021 | China | Removed synonymy (Old value) | Wang et al., 2021f |
| 2021-12-17 | New species inserted | Ectatosticta zhouzhiensis Wang, Zhao, Irfan & Zhang, 2021 | China | | Wang et al., 2021f |
| 2021-12-17 | New species inserted | Ectatosticta menyuanensis Wang, Zhao, Irfan & Zhang, 2021 | China | | Wang et al., 2021f |
| 2021-12-17 | New species inserted | Ectatosticta furax Wang, Zhao, Irfan & Zhang, 2021 | China | | Wang et al., 2021f |
| 2021-12-16 | Taxonomic reference update | Coenoptychus pulcher Simon, 1885 | India, Sri Lanka | (Old value) | |
| 2021-12-16 | Taxonomic reference update | Apochinomma dolosum Simon, 1897 | India | (Old value) | |
| 2021-12-16 | Reference included | | | Pett & Perger, 2021 |
| 2021-12-16 | New taxonomic reference entry | Myrmecotypus rubioi Pett & Perger, 2021 | Bolivia | | Pett & Perger, 2021 |
| 2021-12-16 | New species inserted | Myrmecotypus rubioi Pett & Perger, 2021 | Bolivia | | Pett & Perger, 2021 |
| 2021-12-16 | New taxonomic reference entry | Castianeira spinipalpis Mello-Leitão, 1945 | Bolivia, Paraguay, Argentina | | Pett & Perger, 2021 |
| 2021-12-16 | First description of male | Castianeira spinipalpis Mello-Leitão, 1945 | Bolivia, Paraguay, Argentina | (Old value) | Pett & Perger, 2021 |
| 2021-12-16 | Species distribution update | Castianeira spinipalpis Mello-Leitão, 1945 | Bolivia, Paraguay, Argentina | (Old value) | Pett & Perger, 2021 |
| 2021-12-16 | Species distribution update | Gamasomorpha comosa Tong & Li, 2009 | China (Hainan), Laos | (Old value) | Tong & Li, 2013b |
| 2021-12-15 | New taxonomic reference entry | Anzacia perexigua (Simon, 1880) | New Caledonia | | Berland, 1924a |
| 2021-12-15 | Species distribution update | Pardosa colchica Mcheidze, 1946 | Caucasus (Russia, Georgia, Armenia, Azerbaijan), Iran | (Old value) | Zhukovets, 2021 |
| 2021-12-15 | Reference included | | | Zhukovets, 2021 |
| 2021-12-15 | New taxonomic reference entry | Araneus quadratus Clerck, 1757 | Europe, Turkey, Russia (Europe to Far East), Iran, Central Asia to China, Japan | | Zhukovets, 2021 |
| 2021-12-15 | New taxonomic reference entry | Araneus tereshkini Zhukovets, 2021 | Ukraine (Crimea), Russia (Caucasus) | | Zhukovets, 2021 |
| 2021-12-15 | New species inserted | Araneus tereshkini Zhukovets, 2021 | Ukraine (Crimea), Russia (Caucasus) | | Zhukovets, 2021 |
| 2021-12-15 | Reference included | | | El-Hennawy et al., 2021 |
| 2021-12-15 | New taxonomic reference entry | Minosiella pallida (L. Koch, 1875) | Egypt, Somalia, Yemen | | El-Hennawy et al., 2021 |