THE XERCES SOCIETY FOR INVERTEBRATE CONSERVATION

Aquatic Invertebrates in Pacific Northwest Freshwater Wetlands
An Identification Guide and Educational Resource

Gelastocoridae
(toad bugs)

front legs are raptorial; body is short (6-9 mm), squat, and rather bumpy; the head is very short and wide, and the eyes protrude out to the sides; short inconspicuous antennae

Naucoridae
(creeping water bugs)

front legs are raptorial; the wingtips lack veins and the pronotum fits snugly around the head, so that the curve of the pronotum continues around the sides of head