Knobbed Salmonfly
- kingdom: Animalia
- phylum: Arthropoda
- class: Insecta
- order: Plecoptera
- family: Pteronarcyidae
- genus: Pteronarcys
- species: Pteronarcys biloba
Greenfield- West Concord
Massachusetts
United States
Knobbed Salmonfly Greenfield West Concord