Syrphus knabi
- kingdom: Animalia
- phylum: Arthropoda
- class: Insecta
- order: Diptera
- family: Syrphidae
- genus: Syrphus
- species: Syrphus knabi
Baltimore- Cabin John
Maryland- West Concord
Massachusetts- Mantua
Virginia
United States
Syrphus knabi Baltimore Cabin John West Concord Mantua