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Digital Guide to Moth Identification

Geometridae 91a1250 – 6761   Pero occidentalis (Hulst, 1896)

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Larva and Host Plants: Host familiy: Elaeagnaceae Ericaceae Oleaceae Pinaceae Rosaceae.  Host genera: Abies Ligustrum Menziesia Prunus Shepherdia.  (Kimberley & Douglas 2025) Similar Species: Pinned specimens of related species. (Hint: select View by Region on the related species page.) Synonymy: occidentalis (Hulst, 1896) (Marmarea) - MONA 1983: 6761 ssp. a. occidentalis (Hulst, 1896) (Marmarea); TL: California, possibly Alameda County (McDunnough 1949). ssp. b. canaster Rindge, 1955 (Pero) ssp. c. helvus Rindge, 1955 (Pero)  colorado Grossbeck, 1910 (Pero)  packardi Cassino & Swett, 1922 (Pero)  patriciata Cassino & Swett, 1925 (Pero)  peplarioides (Hulst, 1898) (Marmarea)

References (Caution: DNA barcoding at BOLD provides evidence of relatedness, not proof of identification; some BOLD specimens shown may not be sequenced.)

Barcode of Life (BOLD) - Caution: Identifications often erroneous; DNA barcode provides evidence of relatedness, not proof of identification; many specimens not sequenced. Poole, R.W., 1987. A Taxonomic Revision of the New World Moth Genus Pero (Lepidoptera: Geometridae). United States Department of Agriculture, Technical Bulletin 1698: 71. Powell, J. A. & P. A. Opler, 2009. Moths of Western North America, Pl. 29.18m; p. 214. Book Review and ordering Rindge, F.H., 1955. A revision of some species of Pero in the western United States (Lepidoptera: Geometridae). American Museum Novitates, 1750: 22. Shropshire, K.J. & D.W. Tallamy, 2025. Lepidoptera of North America, north of Mexico: an annotated list containing geographic ranges and host-plant records. ZooKeys, 1261: 101-113; Suppl. 1. (PDF or read online) Species Page at BugGuide.Net Species Page at E. H. Strickland Museum Species Page at iNaturalist

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