Bug FAQSummer Fishfly
Chauliodes pectinicornis · Order: Megaloptera · Family: Corydalidae
The summer fishfly lives in North America. It carries larvae of Plecopteracoluthus downesi on its middle thorax, which live and pupate there.
Source: Wikipedia
What it eats
It is associated with Plecopteracoluthus downesi larvae, which use the fishfly as a host.
Source: Wikipedia
Where it comes from
It is a North American species.
Source: Wikipedia
Where it is found in the US
Recorded in 36 of 51 states and DC. Most records: New York, Massachusetts, Maryland, Michigan, Connecticut, Pennsylvania, Virginia, Maine.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; native in Canada. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Same family (Corydalidae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Chauliodes_pectinicornis
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-22 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-22.