| 2021-03-09 | Species synonymy | Tetragnatha paraguayensis (Mello-Leitão, 1939) | Brazil, Paraguay, Argentina | Tetragnatha australis synonymized with Tetragnatha paraguayensis | Castanheira & Baptista, 2021a |
| 2021-03-09 | Species updated | Tetragnatha australis (Mello-Leitão, 1945) | Argentina | Status: Synonym (Old value) | Castanheira & Baptista, 2021a |
| 2021-03-09 | New taxonomic reference entry | Tetragnatha caudata Emerton, 1884 | North, Central America, Cuba, Jamaica, Uruguay, Argentina | | Castanheira & Baptista, 2021a |
| 2021-03-09 | Species distribution update | Tetragnatha caudata Emerton, 1884 | North, Central America, Cuba, Jamaica, Uruguay, Argentina | (Old value) | Castanheira & Baptista, 2021a |
| 2021-03-05 | New taxonomic reference entry | Styloctetor austerus (L. Koch, 1884) | Alps (Switzerland, Austria, Italy) | | L. Koch, 1876b |
| 2021-03-05 | Reference included | | | Biurrun, Barrientos & Baquero, 2021 |
| 2021-03-05 | New taxonomic reference entry | Agroeca istia de Biurrun & Barrientos, 2021 | Spain | | Biurrun, Barrientos & Baquero, 2021 |
| 2021-03-05 | New species inserted | Agroeca istia de Biurrun & Barrientos, 2021 | Spain | | Biurrun, Barrientos & Baquero, 2021 |
| 2021-03-04 | Reference included | | | Booysen & Haddad, 2021 |
| 2021-03-04 | New taxonomic reference entry | Micaria tersissima Simon, 1910 | South Africa | | Booysen & Haddad, 2021 |
| 2021-03-04 | New taxonomic reference entry | Micaria scutellata Booysen & Haddad, 2021 | South Africa | | Booysen & Haddad, 2021 |
| 2021-03-04 | New taxonomic reference entry | Micaria sanipass Booysen & Haddad, 2021 | South Africa | | Booysen & Haddad, 2021 |
| 2021-03-04 | New species inserted | Micaria scutellata Booysen & Haddad, 2021 | South Africa | | Booysen & Haddad, 2021 |
| 2021-03-04 | New species inserted | Micaria sanipass Booysen & Haddad, 2021 | South Africa | | Booysen & Haddad, 2021 |
| 2021-03-04 | New taxonomic reference entry | Micaria rivonosy Booysen & Haddad, 2021 | Madagascar | | Booysen & Haddad, 2021 |
| 2021-03-04 | New taxonomic reference entry | Micaria quinquemaculosa Booysen & Haddad, 2021 | Namibia, South Africa | | Booysen & Haddad, 2021 |
| 2021-03-04 | New taxonomic reference entry | Micaria quadrata Booysen & Haddad, 2021 | Ethiopia | | Booysen & Haddad, 2021 |
| 2021-03-04 | New taxonomic reference entry | Micaria plana Booysen & Haddad, 2021 | Ethiopia | | Booysen & Haddad, 2021 |
| 2021-03-04 | New taxonomic reference entry | Micaria parvotibialis Booysen & Haddad, 2021 | Senegal | | Booysen & Haddad, 2021 |
| 2021-03-04 | New taxonomic reference entry | Micaria mediospina Booysen & Haddad, 2021 | South Africa | | Booysen & Haddad, 2021 |
| 2021-03-04 | New species inserted | Micaria rivonosy Booysen & Haddad, 2021 | Madagascar | | Booysen & Haddad, 2021 |
| 2021-03-04 | New species inserted | Micaria quinquemaculosa Booysen & Haddad, 2021 | Namibia, South Africa | | Booysen & Haddad, 2021 |
| 2021-03-04 | New species inserted | Micaria quadrata Booysen & Haddad, 2021 | Ethiopia | | Booysen & Haddad, 2021 |
| 2021-03-04 | New species inserted | Micaria plana Booysen & Haddad, 2021 | Ethiopia | | Booysen & Haddad, 2021 |
| 2021-03-04 | New species inserted | Micaria parvotibialis Booysen & Haddad, 2021 | Senegal | | Booysen & Haddad, 2021 |
| 2021-03-04 | New species inserted | Micaria mediospina Booysen & Haddad, 2021 | South Africa | | Booysen & Haddad, 2021 |
| 2021-03-04 | Species updated | Synema bariguiense Mello-Leitão, 1947 | Brazil | Species epithet corrected (Old value) | |
| 2021-03-04 | New taxonomic reference entry | Micaria laxa Booysen & Haddad, 2021 | South Africa | | Booysen & Haddad, 2021 |
| 2021-03-04 | New taxonomic reference entry | Micaria lata Booysen & Haddad, 2021 | Namibia, South Africa | | Booysen & Haddad, 2021 |
| 2021-03-04 | New taxonomic reference entry | Micaria koingnaas Booysen & Haddad, 2021 | South Africa | | Booysen & Haddad, 2021 |
| 2021-03-04 | New species inserted | Micaria laxa Booysen & Haddad, 2021 | South Africa | | Booysen & Haddad, 2021 |
| 2021-03-04 | New species inserted | Micaria lata Booysen & Haddad, 2021 | Namibia, South Africa | | Booysen & Haddad, 2021 |
| 2021-03-04 | New species inserted | Micaria koingnaas Booysen & Haddad, 2021 | South Africa | | Booysen & Haddad, 2021 |
| 2021-03-04 | New taxonomic reference entry | Micaria gagnoa Booysen & Haddad, 2021 | Ivory Coast, Tanzania, Mozambique | | Booysen & Haddad, 2021 |
| 2021-03-04 | New taxonomic reference entry | Micaria felix Booysen & Haddad, 2021 | Cameroon, Ethiopia, Malawi, Zambia, Namibia, Zimbabwe, Mozambique, South Africa | | Booysen & Haddad, 2021 |
| 2021-03-04 | New taxonomic reference entry | Micaria durbana Booysen & Haddad, 2021 | Zambia, South Africa | | Booysen & Haddad, 2021 |
| 2021-03-04 | New species inserted | Micaria gagnoa Booysen & Haddad, 2021 | Ivory Coast, Tanzania, Mozambique | | Booysen & Haddad, 2021 |
| 2021-03-04 | New species inserted | Micaria felix Booysen & Haddad, 2021 | Cameroon, Ethiopia, Malawi, Zambia, Namibia, Zimbabwe, Mozambique, South Africa | | Booysen & Haddad, 2021 |
| 2021-03-04 | New species inserted | Micaria durbana Booysen & Haddad, 2021 | Zambia, South Africa | | Booysen & Haddad, 2021 |
| 2021-03-04 | New taxonomic reference entry | Micaria chrysis (Simon, 1910) | Ivory Coast, Ethiopia, Tanzania, Namibia, Mozambique, South Africa, Lesotho | | Booysen & Haddad, 2021 |
| 2021-03-04 | Species distribution update | Micaria chrysis (Simon, 1910) | Ivory Coast, Ethiopia, Tanzania, Namibia, Mozambique, South Africa, Lesotho | (Old value) | Booysen & Haddad, 2021 |
| 2021-03-04 | First description of male | Micaria chrysis (Simon, 1910) | Ivory Coast, Ethiopia, Tanzania, Namibia, Mozambique, South Africa, Lesotho | (Old value) | Booysen & Haddad, 2021 |
| 2021-03-04 | First description of female | Micaria chrysis (Simon, 1910) | Ivory Coast, Ethiopia, Tanzania, Namibia, Mozambique, South Africa, Lesotho | (Old value) | Booysen & Haddad, 2021 |
| 2021-03-04 | New taxonomic reference entry | Micaria bispicula Booysen & Haddad, 2021 | Namibia, South Africa | | Booysen & Haddad, 2021 |
| 2021-03-04 | New taxonomic reference entry | Micaria bimaculata Booysen & Haddad, 2021 | Mauritania | | Booysen & Haddad, 2021 |
| 2021-03-04 | New species inserted | Micaria bispicula Booysen & Haddad, 2021 | Namibia, South Africa | | Booysen & Haddad, 2021 |
| 2021-03-04 | New species inserted | Micaria bimaculata Booysen & Haddad, 2021 | Mauritania | | Booysen & Haddad, 2021 |
| 2021-03-04 | New taxonomic reference entry | Micaria beaufortia (Tucker, 1923) | Ethiopia, Namibia, Botswana, Zimbabwe, Mozambique, South Africa, Lesotho | | Booysen & Haddad, 2021 |
| 2021-03-04 | Species distribution update | Micaria beaufortia (Tucker, 1923) | Ethiopia, Namibia, Botswana, Zimbabwe, Mozambique, South Africa, Lesotho | (Old value) | Booysen & Haddad, 2021 |
| 2021-03-04 | New taxonomic reference entry | Micaria basaliducta Booysen & Haddad, 2021 | South Africa | | Booysen & Haddad, 2021 |