Paired crotchet-bearing prolegs ventrally on first and usually second abdominal segments
Posterior abdomin with two flattened dorsolateral postspiracular lobes having setose (hair-covered) margins projecting above a conical, dorsally sclerotized segment bearing the terminal anus and anal papillae
Additional
Pictures
Ecology
QuickTime Movies
Additional Links
Bibliography
Merritt, R W., K W. Cummins, and M B. Berg. An Introduction to the Aquatic Insects of North America. Dubuque, Iowa: Kendall/Hunt Company, 2008
