Prolixocupes is a genus of beetles in the family Cupedidae. It contains two species, P. latreillei and P. lobiceps.Arnett, R.H., Jr. & M. C. Thomas, eds. American Beetles, Volume 1: Archostemata, Myxophaga, Adephaga, Polyphaga: Staphyliniformia. Boca Raton, Florida: CRC Press, 2001. p. 20. The former is endemic to central Chile and adjacent areas of western Argentina between 25° and 35° S, while the latter is endemic to Arizona and California in Western North America.

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