Bug FAQNotiophilus semiopacus
Notiophilus semiopacus · Order: Coleoptera · Family: Carabidae
Adults may be short-winged (brachypterous) or long-winged (macropterous). They are found on ridges, near snowfields, in foothill canyons along streams, in parks, and on sea beaches in California. The species is native to Mexico, Arizona, and California.
Source: Wikipedia
Size
Adults can be either short-winged or long-winged, with some having reduced wings and others fully developed wings.
Source: Wikipedia
Where it lives
They live on ridges, near snowfields, in foothill canyons along streams, in parks, and even on California sea beaches.
Source: Wikipedia
When you see it
Adults are active during the day.
Source: Wikipedia
Where it comes from
The species is native to Mexico in Central America and to the US states of Arizona and California.
Source: Wikipedia
Where it is found in the US
Recorded in 7 of 51 states and DC. Most records: California, Arizona, Texas, Washington, North Carolina, Oregon, Arkansas.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Months it is reported in the US
Source: GBIF
More photos
Same family (Carabidae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Notiophilus_semiopacus
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-26 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-26.