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Great Basin Naturalist

Abstract

New species descriptions of Negastrius rupicola from California, Oregon, Washington, and British Columbia; N. stibicki from California, Montana, and British Columbia; N. solox from Arizona and New Mexico; and N. atrosus from Ontario and Quebec are given. Negastrius colon is returned to species status, and a neotype is designated for N. choris. Fleutiauxellus extricatus is a new combination. A key is provided to Neararctic species of Negastrius.

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