Four species of Pronoterus are known from the Nearctic and Neotropical regions. Beutel and Roughley (1987) consider the genus the sister group of the remaining noterid genera, except Hydrocoptus, Notomicrus, and Phreatodytes.
US, US Territories, and Canada
Beutel, R. G., and R. E. Roughley.
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Revised 17 November 1995
Warren U. Brigham
brigham@wub.igis.uiuc.edu