Montana Field Guide

Nymphs and adults within the Chloroperliidae are small green and yellow stoneflies. Known to fly-fisherman as "little yellows", "little greens" and "Yellow Sallies". This family is well represented in Montana with 26 species, one of the larger families in the order Plecoptera, containing some 100 species distributed throughout the Holarctic region of North America. The adults are emerging in late spring and throughout summer.

Merritt and Cummins (1996) report that members of the families, Perlidae and Perlodidae, are largely predators eating other aquatic invertrebrates, especially Diptera (Chironomidae and Simuliidae, midges and blackflies) and Mayflies.