Hydraena malkini Perkins, 1980 Figs. 87 (aedeagus), 169 (spermatheca), 202 (map) New collection records: Costa Rica: Guanacaste, Barra Honda National Park, La Palma trail by station, Quebrada la Palma, 12 i 2004, A. E. Z. Short (AS-04-035) (4 SEMC); Ecuador: Cotopaxi, Guasaganda, elev. 500 m, 1 iv 1988, M. Huybensz (1 MCZ); Guayas, Nobol (5.5 km S), elev. 38 m, 12 i 1978, P. J. Spangler & J. Anderson (14 MCZ); Pichincha, Santo Domingo (79.6 km E), elev. 2545 m, 30 vii 1976, J. Cohen (4 USNM); Venezuela: Zulia, Perija National Park, Toromo, SW of Machiques, narrow ravine, small stream and associated seep, elev. 432 m, 10° 2.962' N, 72° 42.615' W, 28 i 2009, Short, Garcia, Camacho (VZ09-0128-02A) (46 SEMC); Perija National Park, Toromo, SW of Machiques, tributary of the Rio Negro, various small stream microhabitats and rock seepages, elev. 435 m, 10° 3.058' N, 72° 42.974' W, 31 xii 2005, Short, Torres (AS-06-001) (210 SEMC); Perija National Park, Toromo, SW of Machiques, tributary of the Rio Negro, small seepage, elev. 435 m, 10° 3.058' N, 72° 42.974' W, 28 i 2009, Short (VZ09-0128-01B) (68 SEMC); Perija National Park, Tukuko, Rio Manantial, detrital pool, elev. 270 m, 9° 50.49' N, 72° 49.31' W, 29 i 2009, Short, Garcia, Camacho (VZ09-0129-01B) (13 SEMC); Perija National Park, Tukuko, Rio Manantial, gravel margin of stream, elev. 270 m, 9° 50.49' N, 72° 49.31' W, 29 i 2009, Short, Garcia, Camacho (VZ09-0129-01A) (83 SEMC). Distribution. Currently known from Costa Rica, Venezuela, and Ecuador (Fig. 202).

Published as part of Perkins, Philip D., 2011, New records and description of fifty-four new species of aquatic beetles in the genus Hydraena Kugelann from South America (Coleoptera: Hydraenidae), pp. 1-198 in Zootaxa 3074 on page 45, DOI: 10.5281/zenodo.1050060