Capniidae

Earle, Jane I., 2009, New State Stonefly (Plecoptera) Records For Pennsylvania, With Additional Records And Information On Rare Species, Illiesia 5 (16), pp. 169-181 : 173

Capniidae

Capniidae is the largest family of Plecoptera in North America, consisting of 17 genera and approximately 250 mostly winter emerging species ( Nations et al. 2007); however, only 2 genera, Allocapnia and Paracapnia , are found in the Mid- Atlantic/Appalachian region. The Pennsylvania fauna consists of 15 species of Allocapnia and one species of Paracapnia . Adults can be collected during the coldest months of the year along streams and on bridges, tree trunks, and buildings. Two to five species are normally collected at any one location in Pennsylvania. The most common species in Pennsylvania are Allocapnia granulata (Claassen) , A. nivicola (Fitch) , A. pygmaea (Burmeister) , A. rickeri Frison , A. recta (Claassen) , and Paracapnia angulata Hanson.

The following species are infrequently collected or have a limited range in Pennsylvania.