Dissomphalus arteus 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: 31

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Dissomphalus arteus Brito & Azevedo

sp. nov.

Dissomphalus arteus Brito & Azevedo  , sp. nov.

( Figs 10View FIGURES 1 – 12, 41View FIGURES 33 – 44, 72View FIGURES 64 – 75, 136–137View FIGURES 136 – 147)

Description. Male. Body length 4.96 mm. Color: head and mesosoma dark castaneous; metasoma castaneous. Head ( Fig. 10View FIGURES 1 – 12). Mandible with two distal teeth. Median clypeal lobe trapezoidal, with one angulate tooth; median clypeal carina high in profile, complete or nearly so, convex in profile. Frons strongly coriaceous and punctures large. Vertex crest weakly concave. Pronotal disc coriaceous; anterior margin coarse. Metasoma ( Fig. 41View FIGURES 33 – 44). Tergal process with lateral, deep, subcircular and large depression, with small, low and dorsad tubercle placed on anterior area of depression, pit small, with long and sparse tuft of setae. Posterior hypopygeal margin sinuous ( Fig. 72View FIGURES 64 – 75). Genitalia ( Figs 136–137View FIGURES 136 – 147): 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; outer margin and inner margin slightly sinuous; apex long, simple, parallel; additional inner ramus long; basal stub short and narrow. Aedeagal dorsal body with pair of apical lobe; outer lobe long, vertical and very narrow, with apical margin crenulate and ventrad; inner pair stout, membranous and setose. Apodeme not extending beyond genital ring.

Variation. Tergal process with very shallow depression and without tubercle.

Remarks. This species is similar to the D. racarus  sp. nov. by having the dorsal margin of the paramere sinuous, the apex of the basal bar projected forward and the inner margin of the aedeagal ventral ramus crenulate. However, this species has the apex of the basal bar smooth, the ventral margin of the apical lobes of the aedeagal dorsal body not excavated and the apical margin of the aedeagal ventral ramus smooth, whereas D. racarus  sp. nov. has the apex of basal bar crenulate, the ventral margin of the apical lobes of the aedeagal dorsal body deeply excavated and the apical margin of the aedeagal ventral ramus with a small projection dorsad.

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: 7♂, same data as holotypeGoogleMaps  ; Coclé Pr [ovincia]: 1♂, El Copé, Par [que] Nac [ional General de División ] Omar Torrijos H [errera], 570–670 m.s.n.m., [08º41'56"N, 80º39'17"W], 26–30 sep. 1999, Tr [ampa] Malaise, A. Santos, P. González [col.] ( MIUP)GoogleMaps  .

Distribution ( Fig. 229View FIGURES 224 – 233). Panama (Bocas del Toro and Coclé).