Bug FAQVermilion Granite Moth
Digrammia subminiata · Order: Lepidoptera · Family: Geometridae
Also called: Vermillion Granite Moth, Dark-waved Angle
The vermilion granite moth measures about 20 to 25 mm across the wings. Its caterpillars eat willow (Salix) leaves. Adults fly from late May through late July across western North America.
Source: Wikipedia
How to recognize it
Digrammia subminiata, known as the vermilion granite or dark-waved angle, belongs to the Geometridae family.
Source: Wikipedia
Size
The wingspan ranges from 20 to 25 mm.
Source: Wikipedia
Where it lives
It lives in western North America, from British Columbia and Manitoba down through Colorado to Arizona and California.
Source: Wikipedia
What it eats
The larvae feed on species of willow (Salix).
Source: Wikipedia
Life cycle
Adults are on the wing from late May to late July.
Source: Wikipedia
When you see it
The flight period for adults spans late May through late July.
Source: Wikipedia
Where it comes from
Its native range covers the same western North American region, from British Columbia and Manitoba south to Colorado, Arizona, and California.
Source: Wikipedia
Where it is found in the US
Recorded in 24 of 51 states and DC. Most records: Colorado, Montana, Nebraska, Wyoming, New Mexico, California, Kansas, Oklahoma.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Status: native in North America; native in Canada; native in United States. Source: iNaturalist
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
When can I see adult vermilion granite moths?
Adults are active from late May through late July.
Source: Wikipedia
Where is this moth found?
It occurs in western North America, from British Columbia and Manitoba down to Colorado, Arizona, and California.
Source: Wikipedia
Same family (Geometridae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Digrammia_subminiata
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.