Dissomphalus tisinus Brito & Azevedo, sp. nov.

(Figs 8, 39, 70, 129–130)

Description. Male. Body length 3.52 mm. Color: body dark castaneous. Head (Fig. 8). Mandible with three distal teeth. Median clypeal lobe ill-defined, with one angulate tooth; median clypeal carina high in profile, incomplete apically, straight in profile or nearly so. Frons weakly coriaceous and punctures small. Vertex crest straight. Pronotal disc coriaceous; anterior margin coarse. Metasoma (Fig. 39). Tergal process with median deep, subcircular and large depression, without tubercle, pit absent, with short and dense tuft of setae. Posterior hypopygeal margin straight or nearly so (Fig. 70). Genitalia (Figs 129–130): paramere with dorsal margin entirely wide; apical margin truncate. Aedeagal ventral ramus shorter than dorsal body, wide, abruptly narrowing apicad; cross section laminar; surface subvertical; inner margin slightly sinuous; outer margin sinuous; apex long, simple, angled outward; additional inner ramus absent; basal stub absent. Aedeagal dorsal body with two pairs of apical lobes; outer lobe short, subhorizontal and narrow, with apical margin abruptly acute and ventrad; inner pair stout, membranous and setose. Apodeme not extending beyond genital ring.

Variations. Metasoma castaneous; median clypeal tooth longer.

Remarks. This species is easily recognized by having the apical lobes of the aedeagal dorsal body short and triangular, the median portion of the aedeagal ventral ramus sinuous and narrow. This species is similiar to D. asitius sp. nov. by having the paramere with the dorsal margin almost straight and the apex of the aedeagal dorsal body curved outward. However, this species has the apical lobes of the aedeagal dorsal body short, narrowing apicad and the apical portion of the aedeagal ventral ramus slender and smooth, whereas D. asitius sp. nov. has the apical lobes of the aedeagal dorsal body longer, abruptly acute and the apical portion of the aedeagal ventral ramus toothed.

Material examined. Holotype, ♂, PANAMA, Chiriqui: Finca La Suiza near Hornitos, [08°40'N, 82°14'W], 2– 6.VI.2000, F[light] I[nterception] T[rap], H. & A. Howden [col.] (CNCI) . Paratypes: 1♂, same data as holotype; 2♂, same data as holotype except 25–6.VI.2000 (CNCI); 1♂, 15 km NW Hato del Volcano, 1200 m, [08°46'N, 82°38'W], 24–31.V.1997, Peck & Howden [col.] (CNCI).

Distribution (Fig. 243). Panama (Chiriqui).