• Seven pairs of rather broad abdominal prolegs projecting ventrolaterally, their apices encircled by several transverse rows of hooked spinules
• Antennae forked, longer than head's length

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