Rhytidognathus is a genus of ground beetles in the family Carabidae. There are two described species in Rhytidognathus.

Species These two species belong to the genus Rhytidognathus: Rhytidognathus ovalis (Dejean, 1831) (Uruguay) Rhytidognathus platensis Roig-Juñent & Rouaux, 2012 (Argentina)

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