Tretogonia dentalis Emmrich 1988

Diagnosis. Male: pygofer processes, in ventral view, sharp, with dentate apex, and curved toward the midline without crossing; style rounded apically; aedeagus with a pair of dentiform small apical processes.

Female terminalia. Abdominal sternite VII, in ventral view (Fig. 11), with lateral margins slightly convergent posteriorly, lateroposterior margins triangular, and posterior margin with a median concave emargination; surface with scattered microsetae. Pygofer, in lateral view, not produced posteriorly; surface with scattered microsetae and a few macrosetae on posterior and ventral regions. First valvifers, in lateral view, subsquare; with small spiniform processes on ventral region. First ovipositor valvulae, in lateral view, rectilinear beyond basal curvature; dorsal sculptured area formed mostly by linear processes arranged in oblique lines; ventral sculptured area formed mostly by scale-like processes; apex acute (Fig. 23), with denticles on dorsal and ventral margins. Second valvulae, in lateral view, broadened beyond basal curvature; dorsal margin of blade bearing 34 to 36 continuous teeth, each tooth subtriangular, with denticles on anterior and posterior margins (Fig. 35); ducts extending toward teeth; apex rounded (Fig. 47), with denticles on dorsal and ventral margins; preapical ventral prominence conspicuous. Gonoplacs, in lateral view, with spiniform processes on ventral margin; apex rounded.

Material examined. ARGENTINA. Corrientes: National Park Mburucuyá, 1♀, 28°2´12´´S 58°6´34´´W, 8/I/ 2008, Dietrich C.H. col. Chaco: National Park Chaco, 26°48´50´´S 59°36´52´´W, 1♂, 10/I/2008, Dietrich C.H. col. (MLP); National Park Chaco, 26°48´50´´S 59°36´52´´W, 1♀, 10/I/2008, Dietrich C.H. col. (INHS).

Distribution. Paraguay (Emmrich 1988) and Argentina: Corrientes and Chaco (Dellapé & Paradell 2013).