| Date | Type | Reference | Taxon | Comment |
|---|---|---|---|---|
| 2021-11-12 | New species inserted | Xu, Peng & Li, 2021 | Portia bawang Xu, Peng & Li, 2021 - China (Hainan) | |
| 2021-11-12 | Reference included | Cabrera-Espinosa & Valdez-Mondragón, 2021 | ||
| 2021-11-12 | New taxonomic reference entry | Cabrera-Espinosa & Valdez-Mondragón, 2021 | Latrodectus geometricus C. L. Koch, 1841 - Africa. Introduced to both Americas, Middle East, Pakistan, India, China, Japan, Thailand, Malaysia, Papua New Guinea, Australia, Hawaii | |
| 2021-11-12 | New taxonomic reference entry | Cabrera-Espinosa & Valdez-Mondragón, 2021 | Latrodectus hesperus Chamberlin & Ivie, 1935 - Canada, USA, Mexico. Introduced to Israel, Korea | |
| 2021-11-12 | New taxonomic reference entry | Cabrera-Espinosa & Valdez-Mondragón, 2021 | Latrodectus mactans (Fabricius, 1775) - Probably native to North America only. Introduced to South America, Asia | |
| 2021-11-12 | Reference included | Rheims, 2021 | ||
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Sparianthina rufescens (Mello-Leitão, 1940) - Guyana | |
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Sparianthina selenopoides Banks, 1929 - Costa Rica, Panama | |
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Sparianthina saaristoi Jäger, Rheims & Labarque, 2009 - Venezuela | |
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Sparianthina pumilla (Keyserling, 1880) - Colombia | |
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Sparianthina parang Rheims, 2011 - Trinidad and Tobago | |
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Sparianthina milleri (Caporiacco, 1955) - Venezuela | |
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Sparianthina gaita Rheims, 2011 - Venezuela | |
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Sparianthina deltshevi Jäger, Rheims & Labarque, 2009 - Venezuela | |
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Sparianthina adisi Jäger, Rheims & Labarque, 2009 - Venezuela | |
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Sparianthina soca Rheims, 2021 - Trinidad and Tobago | |
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Sparianthina boyaca Rheims, 2021 - Colombia | |
| 2021-11-12 | New species inserted | Rheims, 2021 | Sparianthina soca Rheims, 2021 - Trinidad and Tobago | |
| 2021-11-12 | New species inserted | Rheims, 2021 | Sparianthina boyaca Rheims, 2021 - Colombia | |
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Guadana urucu Rheims, 2010 - Brazil | |
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Guadana tambopata Rheims, 2010 - Peru | |
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Guadana quillu Rheims, 2010 - Ecuador | |
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Guadana panguana Rheims, 2010 - Peru | |
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Guadana neblina Rheims, 2010 - Brazil | |
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Guadana manauara Rheims, 2010 - Brazil | |
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Guadana arawak Rheims, 2021 - French Guiana | |
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Guadana muirpinima Rheims, 2021 - Brazil | |
| 2021-11-12 | New species inserted | Rheims, 2021 | Guadana arawak Rheims, 2021 - French Guiana | |
| 2021-11-12 | New species inserted | Rheims, 2021 | Guadana muirpinima Rheims, 2021 - Brazil | |
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Guadana mapia Rheims, 2021 - Brazil | |
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Guadana amendoim Rheims, 2021 - Brazil | |
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Guadana ucayali Rheims, 2021 - Peru | |
| 2021-11-12 | New taxonomic reference entry | Rheims, 2021 | Guadana alpahuayo Rheims, 2021 - Peru | |
| 2021-11-12 | New species inserted | Rheims, 2021 | Guadana mapia Rheims, 2021 - Brazil | |
| 2021-11-12 | New species inserted | Rheims, 2021 | Guadana amendoim Rheims, 2021 - Brazil | |
| 2021-11-12 | New species inserted | Rheims, 2021 | Guadana ucayali Rheims, 2021 - Peru | |
| 2021-11-12 | New species inserted | Rheims, 2021 | Guadana alpahuayo Rheims, 2021 - Peru | |
| 2021-11-12 | Species distribution update | Heliophanus apiatus Simon, 1868 - Portugal to Italy, Turkey. Introduced to USA | (previous value) | |
| 2021-11-11 | Reference included | Ballesteros & Hormiga, 2021 | ||
| 2021-11-11 | Genus synonymy | Ballesteros & Hormiga, 2021 | Leucauge White, 1841 | Opas synonymized with Leucauge |
| 2021-11-11 | Genus updated | Ballesteros & Hormiga, 2021 | Opas O. Pickard-Cambridge, 1896 | Status: Synonym (previous value) |
| 2021-11-11 | Transferred to other genus after syn. gen | Ballesteros & Hormiga, 2021 | Leucauge trilineata (Mello-Leitão, 1940) - Brazil | Species transferred from Opas to Leucauge after genus synonymy |
| 2021-11-11 | Transferred to other genus after syn. gen | Ballesteros & Hormiga, 2021 | Leucauge paranensis (Mello-Leitão, 1937) - Brazil | Species transferred from Opas to Leucauge after genus synonymy |
| 2021-11-11 | Transferred to other genus after syn. gen | Ballesteros & Hormiga, 2021 | Leucauge melanoleuca (Mello-Leitão, 1944) - Brazil | Species transferred from Opas to Leucauge after genus synonymy |
| 2021-11-11 | Transferred to other genus after syn. gen | Ballesteros & Hormiga, 2021 | Leucauge caudata (Mello-Leitão, 1944) - Brazil | Species transferred from Opas to Leucauge after genus synonymy |
| 2021-11-11 | Transferred to other genus after syn. gen | Ballesteros & Hormiga, 2021 | Leucauge caudacuta (Taczanowski, 1873) - Peru, Guyana | Species transferred from Opas to Leucauge after genus synonymy |
| 2021-11-11 | Species transferred to new genus | Ballesteros & Hormiga, 2021 | Leucauge lugens (O. Pickard-Cambridge, 1896) - Mexico, Panama | Species transferred from Opas to Leucauge |
| 2021-11-11 | Nota bene edited | Leucauge White, 1841 | (previous value) | |
| 2021-11-11 | Nota bene edited | Opas O. Pickard-Cambridge, 1896 | (previous value) | |
| 2021-11-11 | Genus synonymy | Ballesteros & Hormiga, 2021 | Leucauge White, 1841 | Mecynometa synonymized with Leucauge |
Log values