Template:Pteronarcys

Pteronarcys

Order

Plecoptera

Family

Pteronarcyidae

Genus

Pteronarcys

Common name

The Giant Stonefly

Tied fly

Kaufmann's Black Stone

Pteronarcyidae have branching gills from the bases of their legs as does Perlidae. What distinguishes Pteronarcyidae from Perlidae is the presence of gills on the first two abdominal segments. There are only two genera in this family, but the other, Pteronarcella, is only found in the west/southwest.

Click to see an example of Perlidae or the gills on the first two abdominal segments.