“Aquatic Caterpillars, Snout Moths”
“Alderflies, Dobsonflies, and Fishflies”
“Dragonflies and Damselflies”
4 species in North America. Species identification requires mature larvae with large tusks. This is the only genus in the family, Potamanthidae.
Southeast: 1.6 and higher
Upper Midwest: 4 and higher
Midwest: 3.2 and higher
Collector / Filterer
Widespread (east of the Rocky Mtns.)
Single Tarsal Claw
Usually 3 Tails
Gills on 2-7 Forked, Long, Projecting Laterad
+ Expanded Character List
Order: Wings developing in wing pads. Mouthparts suitable for chewing. Gills present on tops and sides of abdomen. Segmented legs present. One tarsal claw per leg. Usually with 3 tails (sometimes 2).
Family: Long slender mayfly with its gills long, forked, marginally fringed, and projecting laterad; pair of sharp tusks projecting beyond head; the legs are not unusually thick and flattened for digging.
Genus: Flat bodied, long prothoracic legs, tusks are flatten