Bug FAQDrasteria biformata
Drasteria biformata · Order: Lepidoptera · Family: Erebidae
The moth has a wingspan of about 41 to 42 mm. It belongs to the family Erebidae. Adults are seen in January and from April through August in Arizona and California.
Source: Wikipedia
Size
Its wingspan measures 41 to 42 mm.
Source: Wikipedia
Where it lives
It occurs in North America, specifically recorded in Arizona and California.
Source: Wikipedia
Where it comes from
It is native to North America, with records from Arizona and California.
Source: Wikipedia
Where it is found in the US
Recorded in 4 of 51 states and DC. Most records: California, Nevada, Oregon, Texas.
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
Questions people ask
When are Drasteria biformata moths active?
Adults are on wing in January and from April through August.
Source: Wikipedia
Where can I find Drasteria biformata?
They have been recorded in Arizona and California in North America.
Source: Wikipedia
Same family (Erebidae)
Spongy MothLymantria disparDamages trees, gardens or crops
Fall Webworm MothHyphantria cuneaDamages trees, gardens or crops
Brown-tail MothEuproctis chrysorrhoeaCan irritate skin
Isabella Tiger MothPyrrharctia isabella
Virginian Tiger MothSpilosoma virginicaCan irritate skin
Salt Marsh MothEstigmene acreaDamages trees, gardens or cropsSources
- Wikipedia: https://en.wikipedia.org/wiki/Drasteria_biformata
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-28 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-28.