Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
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Upcoming Events

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Previous events


Genus Cyclophora

Sweetfern Geometer - Cyclophora pendulinaria Moth - Cyclophora nanaria - male moth 1422 - Cyclophora nanaria Packard's Wave - Cyclophora packardi Cyclophora dataria Cyclophora pendulinaria - Sweetfern Geometer ? - Cyclophora nanaria unidentified moth - Cyclophora nanaria - female sweetfern geometer - Cyclophora pendulinaria
Show images of: caterpillars · adults · both
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Geometroidea (Geometrid and Swallowtail Moths)
Family Geometridae (Geometrid Moths)
Subfamily Sterrhinae
Tribe Cosymbiini
Genus Cyclophora
7 species in North America (
2 species in Canada (CBIF)
wingspan 21-26 mm
represented in every province and territory of Canada, plus (presumably) Alaska; in the east extends southward through the US at least as far as Georgia
adults fly from May to September
larvae feed on alder, beech, blueberry, snakeroot, sweetfern
Internet References
pinned adult images of both species occurring in Canada (CBIF)