Hydrachnidia
Subcohort
Contains (7)
- Arrenuroidea — 74 species
- Eylaoidea — 25 species
- Hydrachnoidea — 23 species
- Hydrovolzioidea — 1 species
- Hydryphantoidea — 50 species
- Hygrobatoidea — 177 species
- Lebertioidea — 92 species
No published occurrences for this taxon yet.