Dissomphalus tisinus 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: 28-29

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Dissomphalus tisinus Brito & Azevedo

sp. nov.

Dissomphalus tisinus Brito & Azevedo  , sp. nov.

( Figs 8View FIGURES 1 – 12, 39View FIGURES 33 – 44, 70View FIGURES 64 – 75, 129–130View FIGURES 123 – 135)

Description. Male. Body length 3.52 mm. Color: body dark castaneous. Head ( Fig. 8View FIGURES 1 – 12). 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. 39View FIGURES 33 – 44). 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. 70View FIGURES 64 – 75). Genitalia ( Figs 129–130View 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 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.] ( CNCIAbout CNCI)GoogleMaps  . Paratypes: 1♂, same data as holotypeGoogleMaps  ; 2♂, same data as holotype except 25–6.VI.2000 ( CNCIAbout CNCI)GoogleMaps  ; 1♂, 15 km NW Hato del Volcano , 1200 m, [08°46'N, 82°38'W], 24–31.V.1997, Peck & Howden [col.] ( CNCIAbout CNCI).GoogleMaps 

Distribution ( Fig. 243View FIGURES 234 – 243). Panama (Chiriqui).


Canadian National Collection Insects