Two species of the plant bug genus Falconia Distant recently discovered in the United States are reported. Falconia maculipennis Maldonado, a species described from Puerto Rico, is documented for the first time from the Dominican Republic (Monsenor Noel and Pedernales provinces) and the United States (Florida). Falconia collaris, new species, is described, based on specimens from Florida (Miami-Dade Co.), Texas (Cameron Co.), and Mexico (Nuevo Leon and Veracruz). A diagnosis, description, and dorsal habitus and male genitalic images are given for each species, both of which are associated with wild lime, Zanthoxylum fagara (L.) Sarg. [Rutaceae]. Host plants and potential economic importance are discussed.