| Name | URL | Contact | |
|---|---|---|---|
| Mammals | Mammal Diversity Database | https://mammaldiversity.org | |
| Spiders | World Spider Catalog | https://wsc.nmbe.ch | |
| Flies | Systema Diperorum | https://diptera.dk | |
| Ants | Antbase | http://antbase.org | |
| Fishes | Catalog of Fishes (von Eschmeyer) | https://www.calacademy.org/scientists/projects/catalog-of-fishes |