Hierarchy classification:

1. top of the aat hierarchies
2. Agents Facet
3. Living Organisms (hierarchy name)
4. living organisms (entities)
5. Eukaryota (domain)
6. Animalia (kingdom)
7. Arthropoda (phylum)
8. Hexapoda (subphylum)
9. Insecta (class)

Anotations

Scope note:

Members of an order of containing at least 1,700 recorded living species of insects, named because larvae are found under stones in streams. All species are intolerant of water pollution, thus their presence in a stream or still water is considered an indicator of good water quality.