| Name | Children | Media (from resource) | Traits |
|---|---|---|---|
| Acanthamoeba | 0 | 8 | 0 |
| Acanthamoeba polyphaga | 0 | 5 | 0 |
| Acari | 0 | 147 | 0 |
| Acarinae | 0 | 1 | 0 |
| Acinetobacter anitratus | 0 | 1 | 0 |
| Acinetobacter baumannii | 0 | 10 | 0 |
| Acremonium falciforme (Carrion) W. Gams 1971 | 0 | 7 | 0 |
| Acremonium recifei (Leão & Lôbo) W. Gams 1971 | 0 | 1 | 0 |
| Actinomadura madurae | 0 | 2 | 0 |
| Actinomyces Harz 1877 | 0 | 8 | 0 |
| Actinomyces odontolyticus Batty 1958 | 0 | 3 | 0 |
| Actinomyces viscosus | 0 | 2 | 0 |
| Aedes | 0 | 54 | 0 |
| Aedes aegypti (Linnaeus 1762) | 0 | 43 | 0 |
| Aedes japonicus (Theobald 1901) | 0 | 2 | 0 |
