Dissomphalus terbius 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: 55

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Dissomphalus terbius Brito & Azevedo

sp. nov.

Dissomphalus terbius Brito & Azevedo  , sp. nov.

( Figs 24View FIGURES 13 – 24, 55View FIGURES 45 – 56, 86View FIGURES 76 – 87, 188–189View FIGURES 184 – 197)

Description. Male. Body length 2.39 mm. Color: head and mesosoma dark castaneous; metasoma castaneous. Head ( Fig. 24View FIGURES 13 – 24). Mandible with three distal teeth. Median clypeal lobe ill-defined, with one angulate very short 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 weakly concave. Pronotal disc coriaceous; anterior margin carinate. Metasoma ( Fig. 55View FIGURES 45 – 56). Tergal process with median, shallow, subcircular and large depression, without tubercle, with pit large, short and dense tuft of setae. Posterior hypopygeal margin straight or nearly so ( Fig. 86View FIGURES 76 – 87). Genitalia ( Figs 188–189View FIGURES 184 – 197): paramere with dorsal margin entirely wide; apical margin truncate. Aedeagal ventral ramus shorter than dorsal body, wide, abruptly narrowing apicad; cross section laminar; surface vertical; inner margin straight; 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 very long, horizontal and wide, with apical margin angled and laterad; inner pair stout, membranous and setose. Apodeme extending beyond genital ring.

Variations. Head castaneous and mesosoma light castaneous; median clypeal tooth inconspicuous.

Remarks. This species is similar to D. afestus  sp. nov. by having the apical lobes of the aedeagal dorsal body very long and wide and the apical half of the aedeagal ventral ramus narrow. However, this species has the dorsal margin of the paramere rounded with the apex crenulate and the apex of the aedeagal ventral ramus angled outward, whereas D. afestus  sp. nov. has the paramere with the dorsal margin no so rounded with the apex smooth and the apex of the aedeagal ventral ramus not angled outward.

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: 8 ♂ same data as holotype ( MIUP)GoogleMaps  .

Distribution ( Fig. 247View FIGURES 244 – 249). Panama (Bocas del Toro).