Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
Moths Butterflies Flies Caterpillars Flies Dragonflies Flies Mantids Cockroaches Bees and Wasps Walkingsticks Earwigs Ants Termites Hoppers and Kin Hoppers and Kin Beetles True Bugs Fleas Grasshoppers and Kin Ticks Spiders Scorpions Centipedes Millipedes

Upcoming Events

Discussion, insects and people from the 2018 BugGuide Gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington


Family Perlodidae - Perlodid Stoneflies

Perlodid stonefly, genus Clioperla - Clioperla clio Perlodid Stonefly, Diploperla? - Diploperla Perlodid stonefly, Isoperla holochlora - Isoperla holochlora Perlodid stonefly, genus Remenus - Remenus Perlodid stonefly, genus Isogenoides - Isogenoides Perlodid stonefly, genus Remenus - Remenus Isoperla holochlora Isoperla
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Plecoptera (Stoneflies)
Superfamily Perloidea
Family Perlodidae (Perlodid Stoneflies)
Synonyms and other taxonomic changes
includes Isoperlinae
2 subfamilies with ~130 spp. in 30 genera in our area(1) [114 in the lower 48 states(2)] and >300 spp. in 53 genera worldwide(3)
adults usually 10-15 mm (up to 25 mm)
adults of Isoperla species commonly have yellowish or greenish bodies as well as greenish wings; species in other genera are brown or black; pronotum rectangular with corners narrowly rounded; anal lobe of hindwing well developed and with 5 or more veins reaching the wing margin behind vein 1A; adult males of most genera except Arcynopteryx have a lobe on the seventh sternite
nymphs have hind wing pads that protrude at an angle from the body's axis, and the body is pigmented in a distinct pattern; cerci longer than length of abdomen; paraglossae extend beyond the glossae; thoracic gills - if present - either single or double but not profusely branched
holarctic + Oriental; throughout NA(3), although species diversity is greater in mountainous areas of n. US and so. Canada; many spp. have restricted ranges
nymphs live in a wide variety of flowing water habitats, from small streams to large rivers
adults are often found resting or crawling on foliage near water where nymphs developed
spring or spring and summer, depending on genera/species
nymphs prey on small aquatic invertebrates
some adults feed on pollen
adults of Isoperla are diurnal