Bug FAQAseptis adnixa
Aseptis adnixa · Order: Lepidoptera · Family: Noctuidae
Aseptis adnixa is a moth with a wingspan of about 32 to 37.5 mm. Adults are gray-brown with dark lines, spots, a pale postreniform patch, and a streaky hindwing with dark veins. It lives along the Pacific Coast from northern Mexico up to southwestern British Columbia in various forested areas, and the caterpillars feed on Oemleria cerasiformis and Prunus species.
Source: Wikipedia
How to recognize it
Adults are gray-brown with a full set of dark lines and spots, plus a pale patch near the reniform spot. The hindwing shows a streaky pattern with dark veins.
Source: Wikipedia
Size
The wingspan ranges from about 32 to 37.5 mm.
Source: Wikipedia
Where it lives
It inhabits a variety of forested habitats along the Pacific Coast.
Source: Wikipedia
What it eats
Larvae feed on Oemleria cerasiformis and species of Prunus.
Source: Wikipedia
Life cycle
Adults are on the wing from April through July.
Source: Wikipedia
When you see it
The flight period for adults spans April to July.
Source: Wikipedia
Where it comes from
Its range extends from northern Mexico to southwestern British Columbia on the Pacific Coast.
Source: Wikipedia
Lookalikes
It can be confused with Aseptis binotata, but its basal dash is thicker and reaches the antemedial line.
Source: Wikipedia
Where it is found in the US
Recorded in 7 of 51 states and DC. Most records: Oregon, California, Washington, Nevada, New Mexico, Texas, 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
What do the caterpillars of Aseptis adnixa eat?
The larvae feed on Oemleria cerasiformis and on Prunus species.
Source: Wikipedia
Same family (Noctuidae)
Ipsilon Dart MothAgrotis ipsilonDamages trees, gardens or crops
Fall Armyworm MothSpodoptera frugiperdaDamages trees, gardens or crops
Army Cutworm MothEuxoa auxiliarisDamages trees, gardens or crops
Large Yellow UnderwingNoctua pronubaDamages trees, gardens or crops
Silver ΥAutographa gamma
American DaggerAcronicta americanaCan irritate skinSources
- Wikipedia: https://en.wikipedia.org/wiki/Paraseptis
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.