Dissomphalus arteobius 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: 60

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Dissomphalus arteobius Brito & Azevedo

sp. nov.

Dissomphalus arteobius Brito & Azevedo  , sp. nov.

( Figs 26View FIGURES 25 – 32, 57View FIGURES 57 – 63, 88View FIGURES 88 – 94, 209–210View FIGURES 198 – 210)

Description. Male. Body length 3.13 mm. Color: head dark castaneous; mesosoma and metasoma castaneous. Head ( Fig. 26View FIGURES 25 – 32). Mandible with two distal teeth. Median clypeal lobe ill-defined, with one angulate tooth; median clypeal carina low in profile, incomplete apically, straight in profile or nearly so. Frons weakly coriaceous and punctures large. Vertex crest straight. Pronotal disc weakly coriaceous; anterior margin ecarinate. Metasoma ( Fig. 57View FIGURES 57 – 63). Tergal proces with lateral, shallow, subcircular and small depression, without tubercle, with very short tuft of setae. Posterior hypopygeal margin straight or nearly so ( Fig. 88View FIGURES 88 – 94). Genitalia ( Figs 209–210View FIGURES 198 – 210): paramere with dorsal margin entirely wide; apical margin rounded. Aedeagal ventral ramus shorter than dorsal body, evenly narrow; cross section laminar; surface subvertical; inner margin concave; outer margin sinuous; apex short, simple, parallel; additional inner ramus absent; basal stub short and very 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. Mesosoma dark castaneous; median clypeal tooth shorter; depression of tergal process very shallow.

Remarks. This species is easily recognized by having the very long basiparamere about 2 × the size of the paramere. This characteristic does not have in other species in Dissomphalus  . The paramere is wide and short, the apex of the apical lobe of the aedeagal dorsal body is articulated and the eyes are bulging.

Material examined. Holotype, ♂, PANAMA, Darién Pr [ovincia]: P[arque] N[acional] Darién, Pirre, Est[ación] Rancho Frio, 80 m, [08°00'N, 77°45'W], 16 nov –17 ene 2001, Malaise, R. Cambra, A. Santos [col.] ( MIUP)GoogleMaps  . Paratypes: 2♂, same data as holotypeGoogleMaps  ; 3♂, same of holotype except 1000m, 21 mar –4 ab 2000 (2♂), 580m, 21 mar –4 ab 2000 (1♂) (MIUP).

Distribution ( Fig. 227View FIGURES 224 – 233). Panama (Darién).