Bug FAQFlav
Drunella flavilinea · Order: Ephemeroptera · Family: Ephemerellidae
Flav, or Drunella flavilinea, is a spiny crawler mayfly. It lives in both Central America and parts of North America. In North America its range includes the southwestern United States, the western United States, northern Canada, and northern Mexico.
Source: Wikipedia
How to recognize it
Drunella flavilinea belongs to the spiny crawler mayfly group in the family Ephemerellidae.
Source: Wikipedia
Where it lives
This species is found across Central America and North America.
Source: Wikipedia
Where it comes from
In North America it occurs in the southwestern United States, the western United States, northern Canada, and northern Mexico.
Source: Wikipedia
Where it is found in the US
Recorded in 8 of 51 states and DC. Most records: California, Oregon, Wyoming, Alaska, Washington, Colorado, Montana, Utah.
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 (Ephemerellidae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Drunella_flavilinea
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-27 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-26.