. Identification of parasites of the Douglas-fir tussock moth, based on adults, cocoons, and puparia. Douglas-fir tussock moth; Parasites West (U; S; ) Identification; Parasitic insects West (U; S; ) Identification. Identification of Parasites of the Douglas-fir Tussock Moth 1» i Based on Adults, Cocoons, and Puparia Reference Abstract Torgersen, Torolf R. 1977. Identification of parasites of the Douglas-fir tussock moth based on adults, cocoons, and puparia. USDA For. Serv. Res. Pap. PNW-215, 28 p., illus. Pacific Northwest Forest and Range Experimental Station, Portland, Oregon. A key for th
. Identification of parasites of the Douglas-fir tussock moth, based on adults, cocoons, and puparia. Douglas-fir tussock moth; Parasites West (U; S; ) Identification; Parasitic insects West (U; S; ) Identification. Identification of Parasites of the Douglas-fir Tussock Moth 1» i Based on Adults, Cocoons, and Puparia Reference Abstract Torgersen, Torolf R. 1977. Identification of parasites of the Douglas-fir tussock moth based on adults, cocoons, and puparia. USDA For. Serv. Res. Pap. PNW-215, 28 p., illus. Pacific Northwest Forest and Range Experimental Station, Portland, Oregon. A key for the identification of egg, larval, and pupal parasites of the Douglas-fir tussock moth is supplied. Determinations are based on features of adult parasites, their cocoons, or puparia. Notes on additional diagnostic characters and biologies are also given. KEYWORDS: Parasite key, parasites (insect), Douglas-fir tussock moth,J Orgyia pseudotsugataj. RESEARCH SUMMARY Research Paper PNW-215 19'/7 Since the widespread outbreaks of Douglas-fir tussock moth in the West during the early 1970's, many pest management and university personnel have become involved in rearing this insect. Rearings have been conducted for a variety of purposes, among them the determination of the occurrence of parasitism and the species comprising the parasite complex. An illustrated key to 30 species of the more common parasites is pre- sented. The key permits identification of both adult parasites and their cocoons or puparia. Supplemental diagnostic descriptions are given to help the user verify determinations. Brief notes on the biology of each species are also Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Torgersen, Torolf R. cn; Pacific Northwest Forest and Range Experiment Station (Portland, Or. ); United States. Forest
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