Bug FAQPale-lined Angle
Digrammia irrorata · Order: Lepidoptera · Family: Geometridae
Also called: Besprinkled Granite
The pale-lined angle is a moth in the Geometridae family, first described in 1876. Its wingspan measures about 23 to 26 mm. It lives in the western United States and southwestern Canada, from Oklahoma and California up to British Columbia and Alberta.
Source: Wikipedia
How to recognize it
Digrammia irrorata belongs to the Geometridae family and was first named by Alpheus Spring Packard in 1876.
Source: Wikipedia
Size
The moth’s wingspan ranges from 23 to 26 mm.
Source: Wikipedia
Where it lives
It is found across the western United States and southwestern Canada.
Source: Wikipedia
When you see it
In the north, adults are on the wing from March to June.
Source: Wikipedia
Where it comes from
Its native range includes the western U.S. and southwestern Canada, from Oklahoma to California and north to British Columbia and Alberta.
Source: Wikipedia
Where it is found in the US
Recorded in 16 of 51 states and DC. Most records: California, Texas, Colorado, Oklahoma, Arizona, Utah, New Mexico, Montana.
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 are pale-lined angle moths active?
In the northern part of their range they are on wing from March to June; farther south they may have several generations per year.
Source: Wikipedia
Same family (Geometridae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Digrammia_irrorata
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.