Dissomphalus margarethae 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 margarethae

description: Dissomphalus margarethae Brito & Azevedo, sp. nov.
(Figs 1F, 5G)
Diagnosis. This species is easily recognized by having the tergal process with dense tuft of setae located very laterally, the dorsal margin of harpe very wide, the basivolsella with spines, the basidorsal corner of digitus strongly projected and inner median filament aligned with aedeagal dorsal lobes.
Description. Head. Mandible with two distal teeth. Median clypeal lobe trapezoidal, with one rounded tooth; incomplete apically, straight in profile or nearly so. Frons coriaceous, punctures small and dense. Vertex crest weakly incurved. Dorsal pronotal area with anterior margin coarse. Tergal process lateral, with dense tuft of setae inside of shallow depression. Posterior hypopygeal margin straight or nearly so. Genitalia. Harpe entirely wide, apical margin truncate, abaxial margin not projected; gonostipes shorter than harpe, ventral margin not excavated until outer margin of basivolsella; digitus short, basidorsal corner strongly projected; basivolsella without protuberance with spines; aedeagal ventral valve with apex posterior to apex of dorsal one, wide, progressively narrowing apicad; inner margin outcurved; outer margin slightly sinuous, slightly curved laterad; aedeagal dorsal valve narrow, with two pairs of apical lobe; outer lobe short, very narrow, apical margin straight and posterad; apex of inner median filament anterior to apex of lobe, directed posterad; basal cover plate entirely wide, posterior margin straight or nearly so; apodeme extending beyond genital ring.
Material examined. Holotype 1♂: BOLIVIA, Dept. Beni, Rio Itenez at mouth of Rio Baures, 1.X.1964, J. K. Bouseman, J. Lussenshop Collectors (AMNH). Paratypes: BOLIVIA: Dept. Beni, 1♂, 20 km. W. Laranjeiras, 3– 5.III.1964, J. K. Bouseman, K. Lussenshop Collectors (AMNH); Rio Itenez opposite Costa Marques (Brazil), J. K. Bouseman, J. Lussenshop Collectors, 3♂, 2.IX.1964, 4♂, IX–3–1964, 2♂, IX–4–1964, 2♂, IX–7–1964 (AMNH); 1♂, Pampa do Meio IX–11–13–1964 (AMNH); 1♂, about 4 km above Costa Marques (Brazil), IX–12–18–1964 (AMNH); 1♂, at mouth of Rio Baures, X–1–1964 (AMNH), 1♂, X–2–1964, 1♂, X–3–1964, 3♂, X–10–1964 (AMNH); Santa Cruz, Rio Ichilo, 1♂, (Locality B), July 24, 1965, see Bouseman field notes in Mammology Department., J. K. Bouseman Collector (AMNH); BRAZIL, Dept. Rondonia, 2♂, Rio Guapore, opposite mouth of Rio Baures (Bolivia), IX–23–1964, 1♂, IX–26–1964, J. K. Bouseman, J. Lussenshop Collectors (AMNH).
Distribution. Bolivia, Brazil (Rondônia).
Etymology. This species is named after the pulmonologist Margareth Dalcolmo, one of the pioneers in the fight against smoking in Brazil.
Remarks. It is similar to D. johannae sp. nov. by having the aedeagal dorsal valve narrow, the apex of inner median filament thick and anterior to apex of aedeagal dorsal lobes, and the margin basivolsellar with spines. However, D. margarethae sp. nov. has the harpe entirely wide, the inner median filament aligned with apex of outer lobes, the basal cover plate wide, and the tergal process with a dense tuft of setae, whereas D. johannae sp. nov. has the harpe slightly wide basally, the inner median filament anterior to the apex of outer lobes, the basal cover plate narrow, and the tergal process with tubercle.
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 page 420, DOI: 10.11646/zootaxa.5536.3.2, http://zenodo.org/record/14239039