AnimaliaVeneridaVesicomyidaeSuárez-MozoNancy YolimarGraciaAdrianaValentich-ScottPaulA new species of Malletia (Bivalvia, Malletiidae) and new records of deep-water bivalves from Pacific Southern ColombiaZookeys30520182018762133110.3897/zookeys.762.20335 Pliocardia cf. donacia (Dall, 1908)Examined material.

1 valve EA337 (1.7811°N, 79.0351°W) at 530 m (INV MOL9768), 1 valve EA336 (1.9045°N, 79.3030°W) at 612 m (INV MOL9770), 1 live specimen EA344 (2.3905°N, 78.8288°W) at 656 m (INV MOL9771).

New location.

Off Nariño, Colombian Pacific.

Distribution.

Panama (Coan and Valentich-Scott 2012), Choco, Colombia (Gracia and Valentich-Scott 2014).

Remarks.

Prior to this study, dead shells of Pliocardiadonacia were identified in Pacific Colombia at depths between 272 and 295 m (Gracia and Valentich-Scott 2014). The present collection in southern Colombia yielded one live specimen and two empty valves, suggesting that the species inhabits both the northern and southern Colombian Pacific. Further, the bathymetric limit of the species is extended to 656 m in the Colombian Pacific. Many generic uncertainties exist within the family Vesicomyidae. Thus, we follow Coan and Valentich-Scott (2012) in their tentative placement of P.donacia within the genus Pliocardia.

CoanEVValentich-ScottP (2012) Bivalve Seashells of Tropical West America. Marine bivalve mollusks from Baja California to northern Peru. Santa Barbara Museum of Natural History. Santa Barbara, 1258 pp.GraciaAValentich-ScottP (2014) New records of soft bottom bivalves (Mollusca) inhabiting the northern Pacific Ocean of Colombia.Marine Biodiversity Records7: 1–15. https://doi.org/10.1017/S1755267214000566