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Digital Guide to Moth Identification

Erebidae 930164 – 8312   Orgyia pseudotsugata (McDunnough, 1921)              Douglas Fir Tussock Moth

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Larva and Host Plants: Host familiy: Celastraceae Cupressaceae Fagaceae Grossulariaceae Pinaceae Rhamnaceae Rosaceae Salicaceae.  Host genera: Abies Calocedrus[=Libocedrus] Ceanothus Larix Paxistima Picea Pinus Pseudotsuga Purshia Ribes Rosa S...  Host extended: polyphagous on conifers, & adjacent shrubs such as Purshia (Furniss & Carolin 1977); restricted to c...  (Kimberley & Douglas 2025) Similar Species: Pinned specimens of related species. (Hint: select View by Region on the related species page.) Synonymy: pseudotsugata (McDunnough, 1921) (Hemerocampa) - MONA 1983: 8312 ssp. a. pseudotsugata (McDunnough, 1921) (Hemerocampa) ssp. b. morosa Ferguson, 1978 (Orgyia) ssp. c. benigna Ferguson, 1978 (Orgyia)

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. Ferguson, D. C., 1978. Moths of America North of Mexico, Fascicle 22.2: p. 70; pl. 8.49-57. order or free PDF Powell, J. A. & P. A. Opler, 2009. Moths of Western North America, Pl. 49.20m; p. 276. Book Review and ordering 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 Pacific Northwest Moths Species Page at iNaturalist

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