Bug FAQWestern False Hemlock Looper
Nepytia freemani · Order: Lepidoptera · Family: Geometridae
The western false hemlock looper has a wingspan of about 21 mm. Its larvae feed on a variety of conifer trees.
Source: Wikipedia
Size
Wingspan is roughly 21 mm.
Source: Wikipedia
What it eats
Larvae eat various conifer species.
Source: Wikipedia
When you see it
Adults are on the wing from August through October, depending on location.
Source: Wikipedia
Where it comes from
Native to the same western North American region.
Source: Wikipedia
Where it is found in the US
Recorded in 5 of 51 states and DC. Most records: Idaho, Montana, Washington, Colorado, Utah.
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 western false hemlock loopers active?
Adults fly from August to October, with exact timing varying by region.
Source: Wikipedia
Same family (Geometridae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Nepytia_freemani
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.