Dipropus tequesta Johnson new species (Coleoptera: Elateridae) is described from southern Florida. Dipropus fuscus (LeConte) is a new synonym of D. soleatus (Say), and D. granosus (Fall) is a new synonym of D. asper (LeConte). The fl ightless female of D. asper is described and provides the fi rst report of brachyptery and endogean habits in Dipropus. A key to the species of the eastern United States and a new checklist of species for the country are provided.