Bug FAQHübner's Pero Moth
Pero ancetaria · Order: Lepidoptera · Family: Geometridae
Also called: Hubner's Pero Moth, Hubner's Pero
The adult moth has a wingspan of about 31 to 37 mm. It lives in the eastern United States and the Canadian provinces of Ontario and Quebec. There are two generations each year, with adults flying from early spring through early fall in the south and in two shorter periods farther north.
Source: Wikipedia
Size
Adults measure 31 to 37 mm across the wings.
Source: Wikipedia
What it eats
The caterpillars eat leaves of alder, Shepherdia canadensis, black cherry, and willow.
Source: Wikipedia
Life cycle
The species produces two generations each year.
Source: Wikipedia
When you see it
In the southern part of its range adults are on the wing from March through September; farther north they appear in May-June and again in August-September.
Source: Wikipedia
Where it is found in the US
Recorded in 41 of 51 states and DC. Most records: Massachusetts, Michigan, Alabama, North Carolina, Minnesota, New York, Ohio, Texas.
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
How many generations does this moth have each year?
It has two generations per year.
Source: Wikipedia
When are the adults active?
Adults fly from March to September in the south and in two periods, May-June and August-September, farther north.
Source: Wikipedia
Same family (Geometridae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Pero_ancetaria
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.