Dissomphalus boiuna Colombo & Azevedo

Colombo, Wesley D., Alencar, Isabel D. C. C., Limeira-De-Oliveira, Francisco & Azevedo, Celso O., 2018, New species and records of Dissomphalus Ashmead (Hymenoptera, Bethylidae) from Cerrado, Caatinga and relicts of the Atlantic Forest from northeastern Brazil, Zootaxa 4462 (1), pp. 1-40: 29

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Dissomphalus boiuna Colombo & Azevedo

sp. nov.

Dissomphalus boiuna Colombo & Azevedo   sp. nov.

( Figs 66–70 View FIGURES 56–70 )

Description. Male. Head and mesosoma black; metasoma dark castaneous. Mandible with two apical teeth; median clypeal lobe trilobate, median tooth pointed; frons coriaceous, punctate; eyes glabrous. Notauli complete; pronotal disc coriaceous, punctate. Metasomal tergite II with tergal process with one pair of conspicuous lateral depressions, tubercle absent, tuft of setae, thick and conspicuous bristles on the border of each depression, directed into depressions. Posterior hypopygeal margin weakly concave. Genitalia: paramere with rounded apex, narrow, peanut-shaped, higher than the basiparamere; aedeagal ventral ramus longer than dorsal body, apex strongly bifurcated, laminar, very wide; aedeagal dorsal body with two pair of apical lobes, outer lobe very wide, curved ventrally, rounded apex, ventral margin strongly serrated, inner pair membranous; basal process absent; apodeme extending beyond genital ring. Female unknown.

Remarks. This species does not fit into any currently defined species-group by having the aedeagal ventral ramus with the apex strongly bifurcated, laminar, very wide, the aedeagal dorsal body with the outer apical lobe very wide and curved ventrally.

Material examined. Holotype ♂, BRAZIL, MA[ranhão], Carolina, PN Chapada das Mesas, Riacho Cancela, 07°06'44.2''S 47°17'56.8''W, 255m, 01–10.VIII.2013, Armadilha Malaise, JA Rafael, F Limeira-de-Oliveira, TTA Silva cols. ( CZMA) GoogleMaps   . Paratypes: 2♂ same data of holotype, except: 225m, 01–10.XI.2013 GoogleMaps   ; 1♂ 07°06'44.2''S 47°17'58.3''W, 20–30.IX.2013; 2♂ Mirador , Parque Estadual Mirador, Base da Geraldina, 06°37'48''S 45°52'49''W, 10–30.XI.2013, F Limeira-de-Oliveira, LLM Santos, TL Rocha cols. ( CZMA) GoogleMaps   ; 1♂ Armadilha Suspensa , 01– 10.XI.2013, ( CZMA).  

Etymology. The epithet boiuna   from Tupi refers to an Amazon myth and means a huge dark snake is able to flip boats. Treat as a noun in apposition.

Distribution. Brazil (Maranhão).