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

Heptageniidae Level 1 Level 2

Heptageniidae

 

Key Characters

Tarsi longer than claws; tibiae and tarsi straight, mandibles not visible in dorsal view. Head and body noticeably flattened.
Tolerance Variable, from 0-4
Distribution CA, OR, WA, NV, AZ, Baja