Dissomphalus arbeius Azevedo 2017, sp. nov.
Creators: name: Azevedo, Celso O.
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Bethylidae
Dissomphalus
Dissomphalus arbeius

description: Dissomphalus arbeius Brito & Azevedo, sp. nov.
(Figs 17, 48, 79, 165–166)
Description. Male. Body length 2.00 mm. Color: body castaneous. Head (Fig. 17). Mandible with four distal teeth. Median clypeal lobe ill-defined, with one angulate tooth; median clypeal carina low in profile, complete or nearly so, straight in profile or nearly so. Frons weakly coriaceous and punctures small. Vertex crest weakly concave. Pronotal disc weakly coriaceous; anterior margin ecarinate. Metasoma (Fig. 48). Tergal process, with lateral, shallow, linear and small depression, without tubercle, pit absent, with very short tuft of setae with one distinctly long seta. Posterior hypopygeal margin weakly concave (Fig. 79). Genitalia (Figs 165–166): paramere with dorsal margin wide basally; apical margin truncate. Aedeagal ventral ramus shorter than dorsal body, wide, abruptly narrowing apicad; cross section laminar; surface horizontal; inner margin straight; outer margin slightly sinuous; apex short, simple, angled outward; additional inner ramus absent; basal stub short and very narrow. Aedeagal dorsal body with two pairs of apical lobes; outer lobe short, subvertical and wide with apical margin abruptly acute and dorsad; inner pair stout, membranous and setose. Apodeme not extending beyond genital ring.
Variation. Head, mesosoma and metasoma light castaneous.
Remarks. This species is similar to D. gilvipes by having the dorsal margin of the paramere expanded distally and the aedeagal ventral ramus abruptly narrowing apicad. However, this species has the apical lobes of the aedeagal dorsal body short and wider and the apical margin of the paramere crenulate, whereas D. gilvipes has the apical lobes of the aedeagal dorsal body long and narrow and the apical margin of the paramere smooth.
Material examined. Holotype, ♂, PANAMA, Chiriqui: 2 km W Cerro Punta, 1700 m, [08°51'N, 82°35'W], 19. V–8.VI.1977, Peck & Howden [col.] (CNCI). Paratypes: 12♂, same data of holotype; 1♂, STRI n[ea]r Futurna {= Fortuna}, 1260 m, 8°43'34"N, 82°14'25"W, 30.V.2000, Y[ellow] P[an] T[rap], B. & J. Gill [col.] (CNCI); 15♂, P[arque] I[nternacional] L[a] A[mistad], Jurutungo, 1800 m, [08°54'N, 82°44'W], 30oct.5 nov 1994, Tr [ampa] Malaise (13♂) and Tr [ampas] Amarillas (2♂) A. Rodriguez [col.] (MIUP); 2♂, 15 km NW Hato del Volcano, 1200 m, [08°46'N, 82°38'W], 24–31. V.1997, Peck & Howden [col.] (CNCI); 3♂, Fortuna, Div. Cont. Chiriqui- B[ocas del] Toro, 1070–1090 m, [08°46'16.5"N, 82°11'27.3"W], 8–11.abr.1999, Tr [ampas] Amar [illas], R. Cambra, A. Santos [col.] (MIUP); Coclé Pr [ovincia]: 1♂, El Copé, Par [que] Nac [ional General de División] Omar Torrijos H [errera], 570–670 m.s.n.m., [08º41'56"N, 80º39'17"W], 26–30 sep. 1999, Tr [ampa] Malaise, A. Santos, P. González [col.] (MIUP); Panama Pr [ovincia]: 4♂, P[arque] Nac [ional] Altos de Campana, [08º43'15"W, 80º01'43"W], 10–14 ago 1999, Tr [ampa] Malaise, A. Santos, P. González [col.] (MIUP); 2♂, P[arque] Nac [ional] Sob [eranía], Camino, Plantación, [09º09'N, 79º43'W], 24 ago.–2 sep.1999 (MIUP); 1♂, Cerro Azul, Las Nubes, [09º10'N, 79º25'W], 9–15–oct.1999, R. Cambra, A. Santos [col.] (MIUP); 2♂, Cerro Campana, 08°40'N, 79°50'W, 7–14. V.1973 (CNCI).
Distribution (Fig. 228). Panama (Chiriqui, Coclé and Panama).
description: Published as part of Azevedo, Celso O., 2017, Review of Dissomphalus Ashmead (Hymenoptera, Bethylidae) from Panama, with key to the Central American species, pp. 1-72 in Zootaxa 4335 (1) on pages 40-41, DOI: 10.11646/zootaxa.4335.1.1, http://zenodo.org/record/1010014