California Department of Fish and Wildlife
Aquatic Biological Assement

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

Veliidae Level 1 Level 2

Vellidae

 

Key Characters

Semi-aquatic bugs. Antennae longer than head, wing membrane without distinct cells, claws inserted before tarsal apex (at least on front tarsus), hind femur short, either not surpassing or barely surpassing apex of abdomen. Some species with feather-like structures on middle tarsi.

Tolerance  
Distribution CA, OR, WA, UT, AZ, NV