Bug FAQPacuvius Duskywing
Erynnis pacuvius · Order: Lepidoptera · Family: Hesperiidae
The Pacuvius duskywing is a skipper butterfly with a wingspan of about 29 to 33 mm. It lives in southern British Columbia and most of the western United States, and its caterpillars feed on Ceanothus shrubs.
Source: Wikipedia
How to recognize it
Pacuv… duskywing belongs to the skipper family Hesperiidae.
Source: Wikipedia
Size
Its wingspan ranges from 29 to 33 mm.
Source: Wikipedia
What it eats
The larvae feed on species of the shrub Ceanothus.
Source: Wikipedia
Life cycle
Adults fly from June to July in northern parts of its range, with a second generation appearing in southern areas.
Source: Wikipedia
When you see it
The flight period is June-July in the north and a second generation occurs farther south.
Source: Wikipedia
Where it comes from
Its native range includes southern British Columbia and the western United States.
Source: Wikipedia
Where it is found in the US
Recorded in 13 of 51 states and DC. Most records: California, Arizona, Colorado, New Mexico, Oregon, Washington, Idaho, Utah.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; native in United States; native in Canada. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
When can I see the Pacuvius duskywing?
Adults are on the wing in June and July in northern areas, and a second generation appears later in the south.
Source: Wikipedia
Same family (Hesperiidae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Erynnis_pacuvius
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.