Overland-dispersal
Guides
Pteronarcella badia
Least Salmonfly
Pteronarcella badia, commonly known as the least salmonfly, is a stonefly species in the family Pteronarcyidae found in western North America. It is one of two species in the genus Pteronarcella. The species occupies mid-elevation mountain streams and exhibits complex population genetic structure with six deeply divergent clades across its range. Adults are capable of overland flight, which serves as an important dispersal mechanism between drainage systems.