Hydraena tucumanica Perkins, 1980

Figs. 74 (habitus), 78 (aedeagus), 198 (map)

New collection records: Paraguay: Dep. Boqueron, Estancia Pozo Brillante, elev. 135 m, 23° 1' S, 56° 2' W, 19 xi 2004, Bolivar Garcete (1 MCZ); Mistolar, 18 vii 1997, Drechsel (3 NMW); Dep. Pte. Hayes, San Jose Estero, Rio Pilcomayo (Hauptkanal), 5 x 1995, Drechsel (7 NMW).

Distribution. Currently known from Argentina and Paraguay (Fig. 198).