Planinasus kotrbae Mathis, Rung & Kotrba 2012

Moderately small to medium-sized flies, body length 2.50–3.70 mm. Head: Frons mostly bare of microtomentum, shiny, except for densely microtomentose, velvety-appearing, anterolateral corners, blackish brown; frons much wider than long, frontal ratio averaging 0.48; interfrontal seta long, length subequal to that of lateral vertical seta. Antenna generally blackish brown, basal flagellomere partially yellowish basally; pedicel with ventral projection long, about 1/2 length of basal flagellomere; basal flagellomere long, slightly more than twice basal width; arista bearing 13-14 dorsal rays, 3-4 ventral rays. Face very wide, facial ratio averaging 0.96; face mostly black, black coloration extended to ventral margin of face, lateral margin just ventrad of antennal groove whitish yellow, concolorous with coloration of adjacent parafacial; facial microtomentum sparse or lacking, mostly shiny; midfacies with a conical prominence, shaped like an inverted V; antennal grooves shiny, lacking narrowly triangular, bare area extended medioventrally from ventral margin of antennal groove to oral margin; large facial setae 4-5, not arranged in transverse rows, becoming smaller ventrally; largest seta inserted dorsolaterally, dorsoclinate and slightly convergent; 2nd largest seta inserted medioventrally from largest seta, porrect and parallel; sometimes with a smaller seta inserted just above porrect seta; 2 setae inserted at margin of black and yellowish white color, these oriented ventrally. Clypeus and palpus blackish brown. Gena concolorous with lateral margin of face. Thorax: Generally dark colored, black to blackish brown, anepimeron paler, brownish, with ventral margin yellowish; mesonotum thinly invested with microtomentum, appearing subshiny, with slightly metallic brown luster medially, becoming more steel blue laterally; postpronotum dark brown; area from postpronotum and extended through notopleuron mostly bare, shiny; anepisternum thinly invested with microtomentum, mostly appearing dull, grayish brown; other pleurites less densely invested. Wing conspicuously and uniformly infumate, brownish, base slightly paler, more hyaline. Coxae yellowish; femora mostly yellowish, only apex blackish (apical 1/3 of forefemur, apical 1/8 of middle and hind femora); forefemur lacking a preapical yellowish annulus; tibiae blackish brown; tarsi, except apical 1-2 dark brown tarsomeres, yellowish. Forefemur with posteroventral surface bearing 1 large seta at apical 1/3. Abdomen: Uniformly blackish brown to black, mostly shiny, very sparsely invested with microtomentum. Male abdomen: Tergites 1+2-6 well developed, lengths of tergites 3-6 subequal; tergite 7 narrow; sternites 3, 4, 5 generally as rectangular plates, slightly wider than long, lateral margins shallowly arched; sternite 5 slightly wider subposteriorly; no sternites 6, 7, neither segment forming an annulus. Male terminalia (Figs 20–23): Epandrium in lateral view (Fig. 20) higher than wide, anterior margin nearly straight, posterior margin arched, dorsal margin short, length slightly more than width of surstylus, truncate; surstylus almost as long as epandrium, extended from ventroposterior margin of epandrium in nearly oblique alignment with it , in lateral view (Fig. 20) slipper shaped, tapered toward apex, apex curved dorsally, acutely pointed, with a second, dorsal, slender, digitiform process from base, bearing 1 large, basal setula; hypandrium in ventral view (Fig. 21) more or less V-shaped, arms more slender than thickened base, anterior margin rounded; pregonite in ventral view (Fig. 21) approximately triangular, with anterior margin receded and with slightly round corners; postgonite in ventral view (Fig. 21) convoluted, with a lobe about as wide as long, bearing a few apical setulae, lobe in lateral view (Fig. 23) small, bearing two apical setulae; phallus in ventral view (Fig. 21) complex, only partially sclerotized; phallapodeme in lateral and ventral views (Figs 21, 23) elongate, tubular, nearly straight, very shallowly sinuous, bluntly rounded apically; ejaculatory apodeme much reduced, a little longer than half of length of phallapodeme, in lateral view (Fig. 22) expanded apically, lacking fan-like process.

(Fig. 29). Neotropical: Bolivia (La Paz), Brazil (Amazonas, Maranhão), Costa Rica (Puntarenas), Ecuador (Orellana), Guyana, and Peru (Cuzco, Madre de Dios).