Dobsonfly or not?
April 20, 2010
This insect was discovered in the woods, near a creek, Port Moody, BC, several days ago. It resembles a Dobsonfly except has orangy-red colouring, anal cerci, no pinchers, and wings are held flat (not roof like) against its body. It is 52mm in length. Is it a Dobsonfly?
thanks very much for your help, Leigh S.
Port Moody, British Columbia, Canada
Your observations are quite astute. This is not a Dobsonfly. It is a Giant Stonefly. You may read more about Giant Stoneflies in the genus Pteronarcys, also known as Salmonflies, on Bugguide.