Stoneflies
Order Plecoptera
The Stoneflies (Order Plecoptera) includes 248 species across 10 families and 79 genera in our directory.
About Stoneflies
Plecoptera (stoneflies) includes ~3,700 described species. Stonefly nymphs are among the most pollution-sensitive aquatic insects - they require cold, clean, well-oxygenated running water to survive.
Economic Impact
Stoneflies are considered the gold standard bioindicator for water quality monitoring worldwide. Their absence from a stream is one of the strongest signals of pollution or environmental degradation.
Ecological Role
Stonefly nymphs are important shredders of leaf litter in streams, breaking down organic material and making nutrients available to other organisms. Adults are a key food source for trout and are widely imitated in fly fishing.
Families in Plecoptera (10)
Species in Plecoptera (248)
Giant Salmonfly
Pteronarcys californica
Giant Stonefly
Pteronarcys species
Golden Stonefly
Hesperoperla pacifica
Hairy Needlefly
Moselia infuscata
Haploperla brevis
Haploperla brevis
Haploperla orpha
Haploperla orpha
Helopicus subvarians
Helopicus subvarians
Hesperoperla hoguei
Hesperoperla hoguei
Highlands Roachfly
Tallaperla elisa
Horned Forestfly
Malenka cornuta
Hyporheic Sallfly
Paraperla frontalis
Isogenoides frontalis
Isogenoides frontalis
Isoperla bilineata
Isoperla bilineata
Isoperla davisi
Isoperla davisi
Isoperla dicala
Isoperla dicala
Isoperla holochlora
Isoperla holochlora
Isoperla lata
Isoperla lata
Isoperla marlynia
Isoperla marlynia
Isoperla marmorata
Isoperla marmorata
Isoperla montana
Isoperla montana
Isoperla namata
Isoperla namata
Isoperla orata
Isoperla orata
Isoperla pinta
Isoperla pinta
Isoperla richardsoni
Isoperla richardsoni
Isoperla signata
Isoperla signata
Isoperla similis
Isoperla similis
Isoperla sobria
Isoperla sobria
Isoperla transmarina
Isoperla transmarina
Kathroperla takhoma
Kathroperla takhoma
Knobbed Salmonfly
Pteronarcys biloba
Lapland Springfly
Diura bicaudata
Late Needle Fly
Leuctra fusca
Least Roachfly
Yoraperla brevis
Least Stripetail
Isoperla nana
Leuctra duplicata
Leuctra duplicata
Leuctra ferruginea
Leuctra ferruginea
Leuctra laura
Leuctra laura
Leuctra sibleyi
Leuctra sibleyi
Leuctra tenella
Leuctra tenella
Leuctra tenuis
Leuctra tenuis
Leuctra truncata
Leuctra truncata
Leuctra variabilis
Leuctra variabilis
Lined Sallfly
Suwallia lineosa
Lobed Roachfly
Tallaperla lobata
Longhead Sallfly
Kathroperla perdita
Malenka depressa
Malenka depressa
Malirekus hastatus
Malirekus hastatus
Malirekus iroquois
Malirekus iroquois
Megaleuctra complicata
Megaleuctra complicata
Megarcys subtruncata
Megarcys subtruncata
Midwest Snowfly
Allocapnia rickeri
Midwestern Salmonfly
Pteronarcys pictetii
Moselia zonata 0
Moselia zonata
Mosely's Needle Fly
Leuctra moselyi
Mountain Sallfly
Sweltsa fidelis
Nemoura trispinosa
Nemoura trispinosa
Neoperla clymene
Neoperla clymene
Neoperla coosa
Neoperla coosa
Neoperla mainensis
Neoperla mainensis
Oemopteryx contorta
Oemopteryx contorta
Oemopteryx glacialis
Oemopteryx glacialis
Oregon Willowfly
Taenionema oregonense
Oroperla barbara
Oroperla barbara
Osobenus yakimae
Osobenus yakimae
Ostrocerca albidipennis
Ostrocerca albidipennis
Ostrocerca complexa
Ostrocerca complexa
Ostrocerca dimicki
Ostrocerca dimicki
Ostrocerca prolongata
Ostrocerca prolongata
Ostrocerca truncata
Ostrocerca truncata
Pacific Coast Sallfly
Alloperla elevata
Pacific Sallfly
Sweltsa pacifica
Paracapnia angulata
Paracapnia angulata
Paracapnia baumanni
Paracapnia baumanni
Paracapnia boris
Paracapnia boris
Paracapnia humboldta
Paracapnia humboldta
Paracapnia opis
Paracapnia opis
Paragnetina fumosa
Paragnetina fumosa
Paraleuctra sara
Paraleuctra sara
Paraleuctra vershina
Paraleuctra vershina
Paranemoura perfecta
Paranemoura perfecta
Perlesta nelsoni
Perlesta nelsoni
Perlesta nitida
Perlesta nitida
Perlesta xube
Perlesta xube
Perlinodes aurea
Perlinodes aurea
Plains Snowfly
Mesocapnia frisoni
Podmosta macdunnoughi
Podmosta macdunnoughi
Podmosta obscura
Podmosta obscura
Prostoia completa
Prostoia completa
Prostoia similis
Prostoia similis
Pteronarcella badia
Pteronarcella badia
Pteronarcella regularis
Pteronarcella regularis
Rickera sorpta
Rickera sorpta
Salmoperla sylvanica
Salmoperla sylvanica
Scarce Yellow Sally
Isoperla obscura
Seep Willowfly
Oemopteryx vanduzeea
Shipsa rotunda
Shipsa rotunda
Skwala curvata
Skwala curvata
Slender Snowfly
Capnia gracilaria
Small Brown
Nemoura avicularis
Small Dull Brown
Nemoura cinerea