Dissomphalus teraus 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: 34-35

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Dissomphalus teraus Brito & Azevedo

sp. nov.

Dissomphalus teraus Brito & Azevedo  , sp. nov.

( Figs 14View FIGURES 13 – 24, 45View FIGURES 45 – 56, 76View FIGURES 76 – 87, 145–153View FIGURES 136 – 147View FIGURES 148 – 162)

Description. Male. Body length 4.33 mm. Color: head and mesosoma dark castaneous; metasoma light castaneous. Head ( Fig. 14View FIGURES 13 – 24). Mandible with two distal teeth. Median clypeal lobe trapezoidal, 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 weakly convex. Pronotal disc coriaceous; anterior margin coarse. Metasoma ( Fig. 45View FIGURES 45 – 56). Tergal process with lateral, shallow, circular and large depression, with small, low and laterad tubercle placed on inner area of depression, pit small, with short tuft of setae. Posterior hypopygeal margin sinuous ( Fig. 76View FIGURES 76 – 87). Genitalia ( Figs 145–153View FIGURES 136 – 147View FIGURES 148 – 162): paramere with dorsal margin entirely wide; apical margin truncate. Aedeagal ventral ramus higher than dorsal body, wide, progressively narrowing apicad; cross section laminar; ramous bifid; surface horizontal; inner margin sinuous; outer margin sinuous; apex long, simple, curved outward; additional inner ramus long; basal stub absent. Aedeagal dorsal body with two pairs of apical lobes; outer lobe long, horizontal and narrow, with apical margin rounded and mesad; inner pair stout, membranous and setose. Apodeme extending beyond genital ring.

Variations. Head dark castaneous; metassoma castaneous; frons coriaceous; median clypeal lobe subtrapezoidal; depression of tergal process very shallow or without depression, with very low, very small and without tubercle; apical lobe narrow in sickle-shaped with teeth in inner margin and apical lobes with acute apex and inner margin smooth.

This species has two different aedeagal ventral ramus and apical lobes of the aedeagal dorsal body. In one kind, the aedeagal ventral ramus can be lower than the aedeagal dorsal body; the apical margin entirely wide with rounded and dorsad apex; in the other kind the aedeagal ventral ramus can have the apex narrow and two small and laterad projections.

Remarks. This species is similar to D. piscicercus  by having the paramere entirely wide and the basiparamere very wide. However, this species has the tergal process with tubercle, small and shallow depression, the aedeagal ventral ramus with simple apex and the apex of the basal bar straight with two laterad teeth, whereas D. piscicercus  has the tergal process with ovoid, deep, large depressions nearly touching the posterior margin of the tergite I, with pit, tuft of long setae, the aedeagal ventral ramus with two large apical teeth and the basal bar without two laterad teeth.

Material examined. Holotype, ♂, PANAMA, Chi [riqui]: Hartmans Finca, 28.VI –3.VII.1981 ( PMAE)  . Paratypes: Bocas del Toro: 7 ♂, 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  ; 5♂, same data as holotype  ; 6♂ same data as holotype except 3–VII1981, B. Gill [col.] ( PMAE)  ; 1♂, same province of holotype, 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.] ( CNCI)GoogleMaps  ; 1♂, same province of holotype, 5,6 km N Boquete , La Culebra trail, [08°49'23"N, 82°25'18"W], F[light] I[nterception] T[rap], J. Ashe & R. Brooks [col.] ( CNCI)GoogleMaps  ; 2♂, same province of holotype, Finca La Suiza near Hornitos , [08°40'N, 82°14'W], 25–6.VI.2000, F[light] I[nterception] T[rap], H. & A. Howden [col.] ( CNCI)GoogleMaps  ; [Los Santos]: 2♂, Ojo de Agua , [07°31'N, 80°25'W], 30.VI –14.VII.1982, B. Gill [col.] ( PMAE)GoogleMaps  .

Distribution ( Fig. 244View FIGURES 244 – 249). Panama (Bocas del Toro, Chiriqui and Los Santos).


Royal Alberta Museum


Canadian National Collection Insects