Stoneflies (Plecoptera) are a dominant group in running freshwaters. We report 104 stonefly species from Nevada. The fauna contains species with Sierra Nevada–Cascade range affinities, few of which penetrate far eastward, and Rocky Mountain species extending to western Nevada. Endemics, species associated with the large interior Humboldt River, and species with northern or southern boundaries in Nevada add Zoogeographic complexity. From 3531 stonefly records in Nevada, we provide an annotated discussion and collection data for the species present. This material is a foundation for continuing research on Plecoptera and for monitoring vital stream ecosystems in this arid region of western North America. Collection records from this study are compiled in the Nevada Stonefly Database, which is archived and accessible at http://scholarsarchive.byu.edu/mwnan/vol10/iss1/1. Las moscas de las piedras (Plecoptera) son un grupo dominante en los manantiales de aguas dulces. Reportamos 104 especies de moscas de las piedras en Nevada. La fauna contiene especies que presentan afinidades con las de las montañas de la Sierra Nevada-Cascade, pocas de las cuales se encuentran más hacia el este, y las especies de las Montañ...

STONEFLIES (PLECOPTERA) OF NEVADA