Dissomphalus silveirae De Brito & Azevedo 2024, sp. nov.
Creators: name: De Brito, Chirlei D.
name: Azevedo, Celso O.
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Bethylidae
Dissomphalus
Dissomphalus silveirae

description: Dissomphalus silveirae Brito & Azevedo, sp. nov.
(Figs 1A, 6G)
Diagnosis. This species is easily recognized by having harpe slightly wide basally, aedeagal dorsal outer lobe very wide with apex sinuous and lateral part projected dorsad, the apex of inner median filament very small and the basivolsella connected to the base of aedeagal ventral valve.
Description. Head. Mandible with three distal teeth. Median clypeal lobe trapezoidal, with one rounded tooth; median clypeal carina high in profile, complete or nearly so, straight in profile or nearly so. Frons coriaceous, punctures large and dense. Vertex crest weakly incurved. Dorsal pronotal area with anterior margin coarse. Tergal process submedian, consisting of tuft with few setae, without depression. Posterior hypopygeal margin incurved medially. Genitalia. Harpe slightly wide basally, apical margin truncate and abaxial margin not projected; gonostipes shorter than harpe, ventral margin not excavated until outer margin of basivolsella; digitus short, basidorsal corner poorly projected; basivolsella without protuberance, without spines; aedeagal ventral valve with apex posterior to apex of dorsal one, wide, abruptly narrowing apicad; inner margin straight; outer margin straight, slightly curved laterad; aedeagal dorsal valve narrow, with two pairs of apical lobe; outer lobe long, wide, apical margin wavy and laterad; apex of inner median filament anterior to apex of lobe, directed posterad; basal cover plate entirely wide, posterior margin broadly rounded; apodeme extending beyond genital ring.
Variations. Mandible with two teeth, tergal process is more laterad and in some specimens more median. Specimens from Pará with very setose body.
Material examined. Holotype, 1♂: BRA[ZIL], AM[azonas], Manaus, Res. Ducke, 29.VII. 1992, 50m, Vidal & Vidal, col. (INPA). Paratypes: 10♂, same as holotype (INPA); AM[azonas], Manaus, Res. Ducke, 1♂, Igarapé Ipiranga, IV.2003, arm. Malaise, J.M.F.Ribeiro, col. (INPA); Pará, 3♂, Belém, 26.III.1970, J.M. & B.A.Campbell (PMAE); 1♂, Melgaço, Floresta Nacional Caxiuanã, Trilha Est. Cie. Ferreira Pena, 19–25.XI.2003, arm. Malaise 2, A.P.Aguiar & J.Dias, Ponto P 05141 (MPEG).
Etymology. This species is named after the psychiatrist Nise da Silveira, who revolutionized Psychiatry in Brazil.
Distribution. Brazil (Amazonas).
Remarks. It is similar to D. cuca by having the aedeagal ventral valve straight with apex laterad, and basivolsella connected to the base of aedeagal ventral valve. However, D. silveirae sp. nov. has the harpe with dorsal margin extremely incurved, the aedeagal outer lobe with apex sinuous with lateral part projected dorsad, and the ventral part expanded and pointed up, whereas D. cuca has the harpe with dorsal margin not extremely incurved, the aedeagal outer lobe with apex rounded with lateral part not projected dorsad and the ventral part expanded and not pointed up.
description: Published as part of De Brito, Chirlei D. & Azevedo, Celso O., 2024, Revision of the punctatus species-group of Dissomphalus Ashmead (Hymenoptera, Bethylidae), pp. 389-431 in Zootaxa 5536 (3) on pages 426-427, DOI: 10.11646/zootaxa.5536.3.2, http://zenodo.org/record/14239039