Bug FAQCurved-line and Broad-lined Angles and Allies
Digrammia continuata · Order: Lepidoptera · Family: Geometridae
Also called: Curve-lined Angle, Curved-lined Angle, Curve-lined Angle Moth
The curved-line and broad-lined angle moth has a wingspan of about 22 to 24 mm and lives across much of North America, from eastern Canada to Florida and west to California and Manitoba. Its caterpillars grow to about 29 mm, feed on eastern red-cedar and northern white-cedar, and spend the winter as pupae in soil or debris. Adults fly from March through August, producing two generations each year.
Source: Wikipedia
How to recognize it
Digrammia continuata, known as the curved-line angle, is a moth in the Geometridae family.
Source: Wikipedia
Size
The moth’s wingspan measures roughly 22 to 24 mm.
Source: Wikipedia
What it eats
The larvae feed on eastern red-cedar (Juniperus virginiana) and northern white-cedar (Thuja occidentalis).
Source: Wikipedia
Life cycle
Full-grown caterpillars reach about 29 mm in length and overwinter as pupae in soil or among debris. Adults are on the wing from March to August, producing two generations each year.
Source: Wikipedia
When you see it
Adults appear from early spring through late summer, covering March through August.
Source: Wikipedia
Where it comes from
Its native range includes much of the United States and Canada, spanning the same areas as its habitat.
Source: Wikipedia
Where it is found in the US
Recorded in 47 of 51 states and DC. Most records: Texas, Oklahoma, North Carolina, New Jersey, Maryland, Massachusetts, Virginia, Colorado.
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
What plants do the caterpillars eat?
The caterpillars feed on eastern red-cedar and northern white-cedar.
Source: Wikipedia
When can I see adult moths?
Adults are active from March through August, with two generations each year.
Source: Wikipedia
Where does this species live?
It occurs across much of North America, from eastern Canada to Florida and west to California and Manitoba.
Source: Wikipedia
Same family (Geometridae)
Willow BeautyPeribatodes rhomboidaria
Pale BeautyCampaea perlataDamages trees, gardens or crops
Large Lace-border MothScopula limboundataDamages trees, gardens or crops
Riband WaveIdaea aversata
Yellow Shell MothCamptogramma bilineata
Large Maple Spanworm MothProchoerodes lineolaDamages trees, gardens or cropsSources
- Wikipedia: https://en.wikipedia.org/wiki/Digrammia_continuata
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-23 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-23.