California Department of Fish and Wildlife
Aquatic Biological Assement

California Digital Reference Collection Home | Family Level | Level 1 Taxonomy | Level 2 Taxonomy

Jump to:

Ephemeroptera Odonata Plecoptera Hemiptera Megaloptera Neuroptera Trichoptera Lepidoptera Coleoptera Diptera Non-Insects

Hydroptilidae Level 1 Level 2

Hydroptilidae

 

Key  Characters

Small size, usually < 6mm ("microcaddisflies"). Thoracic segments with dorsal, sclerotized plates. Most larvae construct portable, purse-like cases (final instar). Many feed on filamentous algae (piercers). Undergo hypermetamorphosis: free-living during first four instars.

Tolerance generally 3-6, may be as high as 8 in some genera (Agraylea)
Distribution CA, OR, WA, NV, AZ