THE XERCES SOCIETY FOR INVERTEBRATE CONSERVATION

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

Coenagrionidae
(Narrowwinged damsels)
Very diverse family; may need to identify them by ruling out the other families. All segments of antennae are about the same length; labium is thick and triangular; three plates at tip of abdomen are all the same length, often leaflike and pointed at the tips

Lestidae
(Spreadwings)
Larvae have a very long narrow labium and slender bodies; three plates at tip of abdomen are all the same length; all segments of the antennae are about the same length.

Damselflies uncommon in wetlands

Calopterygidae
(jewelwings)
First antennal segment is very long; body, legs, and plates at the end of the abdomen are long and thin; the middle of the labium has a deep notch with two prominent lobes; the middle plate at the tip of the abdomen is shorter than the two outer plates .