Guavina micropus Ginsburg, 1953 .

Pacific Guavina; Guavina del Pacífico.

Distribution: Global: Eastern Pacific Ocean; from southern Nicaragua to Colombia; entering estuaries and ascending river courses; Costa Rica: Tr (Pacific), 0– 2 m.a.s.l., Per, Dia.

Occurrence and conservation status: Nat, DD.

References: Angulo et al. (2013: 1007; listed, including taxonomic information and distributional data) and Robertson & Allen (2015: 2650; detailed description, including illustrations, information on distribution, with a map, and ecology).