Bug FAQBothersome Deer Fly
Chrysops excitans · Order: Diptera · Family: Tabanidae
No source yet on danger. We have no source yet on whether it bites, stings or damages anything.
Chrysops excitans is a deer fly belonging to the family Tabanidae. It is found in Canada and the United States.
Source: Wikipedia
Where it comes from
It occurs in Canada and the United States.
Source: Wikipedia
Where it is found in the US
Recorded in 18 of 51 states and DC. Most records: Michigan, Wisconsin, Alaska, New Hampshire, Idaho, Vermont, Maine, Minnesota.
AKMEVTNHWAIDMTNDMNILWIMINYRIMAORNVWYSDIAINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFL
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
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Source: GBIF
More photos
Same family (Tabanidae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Chrysops_excitans
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-24 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-24.