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

Syrphidae Level 1 Level 2



Key Characters

Prothoracic spiracles absent or with stigmatal openings near apex of simple stalk.Ribbed filter chamber in area normally occupied by mouth hooks.

Tolerance 10
Distribution CA, OR, WA, NV, AZ, Baja