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A new species of Dorsipes (Acari: Podapolipidae), ectoparasite of Pterostichus luctuosus Dejean (Coleoptera: Carabidae), from Michigan, U.S.A.

Abstract Dorsipes mackenzyae n. sp. (Acari: Podapolipidae) is a subelytral parasite of Pterostichus luctuosus Dejean (Coleoptera: Carabidae) in Michigan, U.S.A. The closest relatives are Dorsipes in the platysmae group found in Europe, Africa and the United States. Dorsipes mackenzyae is the second record of the platysmae group of Dorsipes in the western hemisphere. The new species is compared with 8 species in the platysmae group, including Dorsipes evarthrusi Husband and Rack, 1991 from Georgia, U.S.A. and a key to species of the platysmae group is presented.