Arpedium schwarzi

Fauvel, 1878

Arpedium schwarzi is a rove beetle (Staphylinidae: Omaliinae: Anthophagini) belonging to the Schwarzi group within the Arpedium. It is an eastern North American species with a distribution spanning the eastern United States and southeastern Canada. The species was described by Fauvel in 1878 and has been subject to taxonomic revision, with lectotype designation and redescription in recent studies.

Pronunciation

How to pronounce Arpedium schwarzi: /ɑːrˈpiːdiəm ˈʃvɑːrtsiː/

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Identification

Member of the Schwarzi group within Arpedium, distinguished from other Arpedium species groups (Quadrum and Brachypterum groups) by morphological characters detailed in taxonomic revisions. Distinguished from the similar A. cribratum by geographic distribution—A. schwarzi occurs in the eastern United States while A. cribratum is transcontinental . Specific diagnostic characters include features of the and other morphological traits illustrated in revision works.

Distribution

Eastern United States and southeastern Canada. Documented from Ontario (Canada) and numerous U.S. states including Alabama, Arkansas, District of Columbia, Illinois, Indiana, Kansas, Kentucky, Louisiana, Massachusetts, Michigan, Missouri, Mississippi, North Carolina, New Jersey, New York, Ohio, Oklahoma, Pennsylvania, South Carolina, Tennessee, Virginia, and West Virginia. New state records from South Dakota, Nebraska, and West Virginia have been reported.

Similar Taxa

  • Arpedium cribratumSimilar but distributed across North America rather than eastern United States; previously confused taxonomically but now distinguished as separate
  • Arpedium angulareFormerly synonymized with A. cribratum but revalidated as distinct ; occurs in Nearctic region with some range overlap

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