Dissomphalus irupe Colombo & Azevedo, 2018

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 : 17

Dissomphalus irupe Colombo & Azevedo sp. nov.

( Figs 25–29 )

Description. Male. Head and mesosoma black; metasoma dark castaneous. Mandible with four apical teeth; median clypeal lobe trapezoidal, broadly like duckbill, high in lateral view, median tooth rounded; frons coriaceous, punctate; eyes glabrous; antenna with moniliform flagellomeres; gena with one pair of spines. Notauli absent; pronotal disc weakly coriaceous; metasomal tergite II with tergal process with subrounded lateral depression, tuft of setae, most lateral one directed outward, distinctly longer than others. Posterior hypopygeal margin straight. Genitalia: paramere with rounded apex, strongly arched inward, very constricted, very wide basally, higher than the basiparamere, few, long bristles present; aedeagal ventral ramus shorter than dorsal body, apex narrow, laminar; aedeagal dorsal body with one pair of apical lobe, long, weakly curved dorsally, ventral margin weakly serrated, membranous; basal process absent; apodeme not extending beyond genital ring. Female unknown.

Remarks. This species belongs to the gilvipes species-group by having metasomal tergite II with a lateral tergal process, the tufts of this tergal process have most lateral setae distinctly longer than the others. It is not similar to other species of its species-group. This species is mainly different because it has the median clypeal lobe trapezoidal, broadly like a duckbill, the gena with one pair of spines, and the paramere with a rounded apex, that is strongly arched inward and very constricted.

Material examined. Holotype ♂, BRAZIL, MA[ranhão], Mirador, Parq[ue] Estadual Mirador, Base da Geraldina, 06°37'25''S 45°52'08''W, 11–16.I.2013, Armadilha Malaise, LS Santos, JT Câmara, LLM Santos cols. ( CZMA) . Paratypes, 1♂ same data of holotype, except 06°37'48''S 45°52'49''W, Armadilha Suspensa , 01– 10.XI.2013, F Limeira-de-Oliveira, LLM Santos, TL Rocha cols. ( CZMA) ; 1♂ Carolina , PN Chapada das Mesas, Riacho Sucuruiu, 07°06'44.2''S 47°17'56.8''W, 240m, 01–15.VII.2013, Armadilha Malaise, JA Rafael, F Limeirade-Oliveira, TTA Silva cols. ( CZMA) ; 1♂ 225m, 01–10.VIII.2013, Suspensa lâmina d'água (CZMA).

Etymology. The epithet irupe from Guarani refers to a Brazilian indigenous myth, in which an indigenous woman becomes the aquatic plant victoria regia (common name) when she falls in the river. Treat as a noun in apposition.

Distribution. Brazil (Maranhão).

Figures

FIGURES 17–29. Dissomphalus, ♂. 17–20. D. iara sp. nov.. 17. Head, dorsal view. 18. Tergal process, dorsal view. 19. Genitalia, dorsal view. 20. Genitalia, ventral view. 21–24. D. saci sp. nov.. 21. Head, dorsal view. 22. Tergal process, lateral view. 23. Genitalia, dorsal view. 24. Genitalia, ventral view. 25–29. D. irupe sp. nov.. 25. Head, dorsal view. 26. Spine in gena, lateral view. 27. Tergal process, dorsal view. 28. Genitalia, dorsal view. 29. Genitalia, ventral view. Scales-bar: 100 µm.