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Key to genera of Wisconsin Plecoptera (stonefly) nymphs, Ephemeroptera (mayfly) nymphs, Trichoptera (caddis-fly) larvae, by William L. Hilsenhoff

Key to genera of Wisconsin Plecoptera (stonefly) nymphs, Ephemeroptera (mayfly) nymphs, Trichoptera (caddis-fly) larvae, by William L. Hilsenhoff Smithsonian Libraries and Archives ...
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Nymphs of North American stonefly genera (Plecoptera) / by Kenneth W. Stewart and Bill P. Stark ; with illustrations by Jean A. Stanger

Originally published: College Park, Md. : Entomological Society of America, 1988, in series: The Thomas Say Foundation ; v. 12. siris_sil_737635 ...