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Genus Pero

Pero behrensaria Moth  - Pero Pero ancetaria Brown Moth - Pero meskaria Honest Pero - Hodges#6753 - Pero honestaria Pero morrisonaria Pero morrisonaria?  P. occidentalis? - Pero    - Pero
Show images of: caterpillars · adults · both
Classification
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 Ennominae
Tribe Azelinini
Genus Pero
Synonyms and other taxonomic changes
Pero Herrich-Schäffer, 1855
Stenaspilates Packard, 1876
Azelinopsis Warren, 1876
Marmarea Hulst, 1896
Neodontopera Warren, 1896
Stenodonta Warren, 1905
Numbers
18 species in North America
6 species in Canada (CBIF)
Size
wingspan 35-48 mm, based on CBIF specimens
Identification
an entirely New World genus exibiting sexual dimorphism, polymorphism, extreme geographic variation, a high degree of individual variation (1)
Range
throughout North America except the arctic
Food
Larvae feed on a wide range of hosts from many different families, such as Pinaceae, Rosaceae, Fabaceae, Asteraceae, et.
Life Cycle
Click on an image to view the life cycle:

Print References
Grossbeck, J.A. 1911. Studies of the North American geometrid moths of the genus Pero. Proc. USNM 38: 358-377, pl.13-16
Poole, R.W. 1987. A taxonomic revision of the New World moth genus Pero (Lepidoptera: Geometridae). USDA Technical Bulletin 1698: 1-257 (PDF)(1)
Rindge, F.H. 1955. A revision of some species of Pero from the western United States (Lepidoptera, Geometridae). American Museum Novitates 1750: 1-33 (PDF) (2)
Internet References
pinned adult images of all 6 species occurring in Canada (CBIF)
Lepidoptera - Markku Savela
Works Cited
1.A taxonomic revision of the New World moth genus Pero (Lepidoptera: Geometridae).
Robert W. Poole. 1987. USDA Technical Bulletin 1698: 1-257.
2.A revision of some species of Pero from the western United States (Lepidoptera, Geometridae).
Frederick. H. Rindge. 1955. American Museum Novitates 1750: 1-33.
3.Studies of the North American Geometrid moths of the genus Pero
John Arthur Grossbeck. 1910. No. 1753 — From the Proceedings of the United States National Museum, Vol. 38, pp. 359-377, with Plates 13-16.