Dissomphalus trisus Brito & Azevedo, sp. nov.

(Figs 31, 62, 93, 219–220)

Description. Male. Body length 5.16 mm. Color: head and mesosoma dark castaneous; metasoma castaneous.

Head (Fig. 31). Mandible with two distal teeth. Median clypeal lobe trapezoidal, with one angulate tooth; median clypeal carina very high in profile, complete or nearly so, convex in profile. Frons weakly coriaceous and punctures small. Vertex crest straight. Pronotal disc weakly coriaceous; anterior margin coarse. Metasoma (Fig. 62). Tergal process median, without depression, with small, low and dorsad tubercle, pit small, with very short and dense tuft of setae. Posterior hypopygeal margin straight or nearly so (Fig. 93). Genitalia (Figs 219–220): paramere with dorsal margin entirely wide; apical margin rounded. Aedeagal ventral ramus higher than dorsal body, wide, abruptly narrowing apicad; cross section laminar; surface subhorizontal; inner margin straight; outer margin sinuous; apex long, simple, slightly curved outward, additional inner ramus absent, basal stub long and narrow. Aedeagal dorsal body with two pairs of apical lobes; outer lobe long, horizontal and narrow, with apical margin abruptly acute and ventrad; inner pair stout, membranous and setose. Apodeme extending beyond genital ring.

Variations. Body length 3.88 mm (min.) 5.16 mm (max.).

Remarks. This species is easily recognized by having the aedeagal ventral ramus with median half wide and apical half narrow and parallel. The tergal process median, characterized by having two small tubercles without depressions and small tuft of setae. This species is similar to D. scamatus Azevedo by having the median tergal process, without depression, with tubercle, tuft of setae and the basiparamere narrow. However, this species has the apical lobes of the aedeagal dorsal body long with acute apex and aedeagal ventral ramus with inner margin straight, abruptly narrowing apicad, whereas D. scamatus has the apical lobes of the aedeagal dorsal body short, narrowing at apex, aedeagal ventral ramus with inner margin concave, with acute apex.

Material examined. Holotype, ♂, PANAMA, Chiriquí: 08°54,7'N, 82° 47,3'W 17–18.vi. 1996, 1875 m, F[light] I[interception] T[rap], J. Ashe, R. Brooks (UFES) . Paratypes: 1♂, same data as holotype; 1♂, Finca La Suiza near Hornitos, [08°40'N, 82°14'W], 25–6.VI.2000, H. & A. Howden [col.] (CNCI) ; [Los Santos]: 3♂, Ojo de Agua, [07°31'N, 80°25'W], 30.VI–14.VII.1982, B. Gill [col.] (PMAE) .

Distribution (Fig. 245). Panama (Chiriquí and Los Santos).