Dissomphalus asitius Brito & Azevedo

Azevedo, Celso O., 2017, Review of Dissomphalus Ashmead (Hymenoptera, Bethylidae) from Panama, with key to the Central American species, Zootaxa 4335 (1), pp. 1-72: 26-27

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Dissomphalus asitius Brito & Azevedo

sp. nov.

Dissomphalus asitius Brito & Azevedo  , sp. nov.

( Figs 6View FIGURES 1 – 12, 37View FIGURES 33 – 44, 68View FIGURES 64 – 75, 125–126View FIGURES 123 – 135)

Description. Male. Body length 2.03 mm. Color: head and mesosoma dark castaneous; metasoma castaneous. Head ( Fig. 6View FIGURES 1 – 12). Mandible with two distal teeth. Median clypeal lobe ill-defined, with one angulate tooth; median clypeal carina low in profile, complete or nearly so, straight in profile or nearly so. Frons weakly coriaceous and punctures small. Vertex crest straight. Pronotal disc coriaceous; anterior margin coarse. Metasoma ( Fig. 37View FIGURES 33 – 44). Tergal process with median, shallow, subcircular and large depression, with small, low and dorsad tubercle placed on center of depression, pit very small, with short and dense tuft of setae. Posterior hypopygeal margin strongly concave ( Fig. 68View FIGURES 64 – 75). Genitalia ( Figs 125–126View FIGURES 123 – 135): 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 sinuous; outer margin sinuous; apex long, toothed, angled outward; additional inner ramus absent; basal stub absent. Aedeagal dorsal body two pairs of apical lobes; outer lobe long, horizontal and wide, with apical margin acute and dorsad, inner pair stout, membranous and setose. Apodeme not extending beyond genital ring.

Remarks. This species is easily recognized by having the dorsal margin of the paramere almost straight, the apex of the outer lobe of the aedeagal dorsal body abruptly acute, the aedeagal ventral ramus with a large fold and the genital ring bifurcated in the distal region in ventral view. This combination of characters is unusual for bifoveatus  species-group.

Material examined. Holotype, ♂, PANAMA, Bocas del Toro: Wekso, Teribe, P [arque] I[nternacional] L[a] A[mistad], 50 msnm, [09º24'25"N, 82º56'20"W], 17–24 oct. 1999, Tr [ampa] Malaise, A. Santos[col.] ( MIUP)GoogleMaps  . Paratypes: 5♂, same data as holotypeGoogleMaps  .

Distribution ( Fig. 228View FIGURES 224 – 233). Panama (Bocas del Toro).