California Department of Fish and Wildlife
Aquatic Biological Assement

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Psychomiidae Level 1 Level 2

Psychomyiidae

 

Key Characters

Meso- and metanotum membranous. Abdominal segment IX membranous. Trochantin of prothoracic leg broad and hatchet-shaped. Fixed, tubular, silk retreats. Generally filter feeders, some scrapers/grazers.
Tolerance 2
Distribution CA, OR, WA, NV, AZ