Hydraena costiniceps Perkins, 1980

Figs. 23 (habitus), 25 (aedeagus), 195 (map)

New collection records: Paraguay: Dep. Boqueron, 50 km SE Cruce Demattei, 28 viii 1995, Drechsel (3 NMW); Mistolar, 18 vii 1997, Drechsel (3 NMW); Dep. Concepcion, Est. San Luis, 8 ix 1997, Drechsel (4 NMW).