Isoperla difformis
- kingdom: Animalia
- phylum: Arthropoda
- class: Insecta
- order: Plecoptera
- family: Perlodidae
- genus: Isoperla
- species: Isoperla difformis
Feistritz ob Bleiburg
CarinthiaZwettl an der Rodl
Upper Austria
AustriaDodeni
Neamţ
RomaniaKrokom
JämtlandHabo
JönköpingBengtsfors
Hammarkullen
Lindome
Ljungskile
Rannebergen
Västra Götaland
Sweden