| Anoura cadenai | | Schulz, Katja | |
| Sesarmidae | | Schulz, Katja | |
| Abies fabri (Mast.) Craib | | Frаnkis, Michаel | en |
| Abies spectabilis (D. Don) Mirb. | | Frаnkis, Michаel | en |
| Acacia fumosa | | Beck, Nicholas | en |
| Acanthamoeba | | Shapiro, Leo | en |
| Acanthamoeba astronyxis (Ray and Hayes, 1954) | | Shapiro, Leo | en |
| Acanthamoeba castellanii | | Shapiro, Leo | en |
| Acanthamoeba culbertsoni Singh and Das, 1970 | | Shapiro, Leo | en |
| Acanthamoeba divionensis | | Shapiro, Leo | en |
| Acanthamoeba hatchetti Sawyer, et Al., 1977 | | Shapiro, Leo | en |
| Acanthamoeba lenticulata Molet and Ermolieff-braun, 1976 | | Shapiro, Leo | en |
| Acanthamoeba lugdunensis | | Shapiro, Leo | en |
| Acanthamoeba polyphaga (Puschkarew, 1913) | | Shapiro, Leo | en |
| Acanthamoeba rhysodes (Singh, 1953) | | Shapiro, Leo | en |
| Acanthocephala | | Shapiro, Leo; Schulz, Katja | en |
| Acer negundo | | Frаnkis, Michаel | en |
| Acesta bullisi | | Soulanille, Elaine | |
| Acipenser oxyrinchus desotoi | | Schulz, Katja | en |
| Acipenser oxyrinchus Mitchill, 1815 | | Hammock, Jen | en |
| Acrida cinerea (Thunberg, 1815) | | Campbell, Dana | en |
| Acropora cervicornis (Lamarck, 1816) | | Soulanille, Elaine; Shapiro, Leo | en |
| Acropora Oken, 1815 | | Shapiro, Leo | en |
| Acropora palmata (Lamarck, 1816) | | Soulanille, Elaine | en |
| Acropora prolifera | | Hammock, Jen | en |
| Actinopterygii | | Soulanille, Elaine | |
| Adipicola pacifica | | Shapiro, Leo | en |
| Aegla | | Hammock, Jen | |
| Aegla renana | | Hammock, Jen | |
| Aeglidae | | Hammock, Jen | |
| Aenigmatias bakerae Disney 2011 | | Schulz, Katja | en |
| Aepyornis maximus | | Schulz, Katja | en |
| Aequorea | | Shapiro, Leo | en |
| Aerodramus | | Shapiro, Leo | en |
| Aethopyga nipalensis (Hodgson, 1836) | | Shapiro, Leo | en |
| Agapornis lilianae | | Shapiro, Leo | en |
| Agraulis vanillae | | Schulz, Katja | en |
| Agrilus planipennis | | Shapiro, Leo | en |
| Ailurus fulgens F. G. Cuvier, 1825 | | Frаnkis, Michаel | en |
| Aipysurus laevis | | Shapiro, Leo | en |
| Aipysurus laevis Lacépède, 1804 | | Shapiro, Leo | en |
| Aipysurus laevis pooleorum SMITH 1974 | | Shapiro, Leo | en |
| Alaria fistulosa Postels & Ruprecht | | Shapiro, Leo | en |
| Alcanivorax | | Hammock, Jen | en |
| Alcanivorax borkumensis | | Hammock, Jen | en |
| Alligator mississippiensis | | Shapiro, Leo | en |
| Aloe dichotoma | | Shapiro, Leo | en |
| Alopias vulpinus (Bonnaterre, 1788) | | Campbell, Dana | en |
| Amazona autumnalis lilacina | | Corrigan, Bob | en |
| Amblyomma | | Shapiro, Leo | en |
