Vouchers: Not available. Distribution: Western Atlantic Ocean; from Nova Scotia, Canada, to Uruguay; entering estuaries and littoral lagoons and ascending river courses; (Nicaragua) KP, Es and BF (Atlantic); 0–10 masl; Per, Dia, Amp. Occurrence and conservation status: Nat; LC (2015), population trend unknown. Literature: Villa (1982: 94; detailed description, including illustrations and an identification key, and information on distribution and ecology), González-Alemán (2006: 68; brief description, including an illustration, and information on distribution and ecology), van den Berghe (2015: 45; listed, including an illustration and information on distribution and ecology) and Robertson & Van Tassell (2019: 2947; detailed description, including illustrations, and information on distribution, with a map, and ecology).