Dissomphalus conicus, Azevedo, 2003

Azevedo, C. O., 2003, Synopsis of the Neotropical Dissomphalus (Hymenoptera, Bethylidae), Zootaxa 338 (1), pp. 1-74: 32-33

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http://doi.org/ 10.11646/zootaxa.338.1.1

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Dissomphalus conicus

sp. nov.

Dissomphalus conicus   sp. nov. ( Figs. 37–40 View FIGURES 26–40 )

Description. — Male. Body length 4.38 mm; LFW 3.18 mm. Color: head and mesosoma black; metasoma and clypeus dark castaneous; mandible, antenna, palpi and legs castaneous; distal flagellomeres and hind femur darker; wings subhyaline.

Head: mandible bidentate. Clypeus trapezoidal. First four antennal segments in a ratio of 18:7:6:7, segment XI 1.56 X as long as broad. Frons coriaceous, punctures large, shallow, separated by 0.5–1.5 X their diameters. LH 1.0 X WH; WF 0.58 X WH; 1.26 X HE; OOL 1.21 X WOT; DAO 0.34 X WOT; posterior ocelli distant from the vertex crest 1.82 X DAO, frontal angle of ocellar triangle acute. Vertex badly convex, corners rounded. VOL 0.61 X HE.

Mesosoma: thorax coriaceous and punctated as frons. Pronotal disc 0.71 X length of mesoscutum. Propodeal disc 0.47 X as long as wide, with small polished area posteriorly. Fore femur 3.13 X as long as thick.

Metasoma: tergite II with pair of shallow elliptical lateral depressions, with lateral setae, touching the posterior margin of tergite I, 0.6 X the length of tergite II, each one with tubercle with wide pit on the top ( Fig. 37 View FIGURES 26–40 ), with dense tuft of hairs directed backward, tubercles closer to the lateral margin than the median line of tergite II. Hypopygium with posterior margin slightly convex. Genitalia ( Fig. 38–39 View FIGURES 26–40 ): paramere longer than basiparamere, apex arched inward, rounded, and thin, dorsal margin badly convex, ventral margin badly concave; basivolsella with large, wide and rounded expansion directed upward at inner margin; aedeagus with ventral ramus as long as dorsal body, laminar, surface vertical, wide, with apex somewhat blunt and inclined in lateral view, ventral margin with deep median emargination ( Fig. 40 View FIGURES 26–40 ); dorsal body with three pairs of apical lobes, outer pair parallel, dorsal margin conical and angled medially upward in lateral view, ventral margin with two large and long teeth on its apical half, the apical tooth serrated in the outer margin and the subapical one somewhat serrated densely hairy in the inner surface ( Fig. 40 View FIGURES 26–40 ), dorsal and ventral pairs stout and membranous, with apex rounded, the dorsal one smaller and directed somewhat downward, the ventral one larger and horizontal; base of aedeagus with long tooth, slightly inclined upward, its surface laminar and depressed, between the dorsal lobes; apodeme extending beyond the elliptical genital ring.

Material examined. — Holotype: 1 male, BRAZIL, Paraná, Ponta Grossa, Vila Velha, Reserve IAPAR, Br 376, 14.XI.1987, Malaise trap, Profaupar survey ( DZUP)   . PARATYPES: BRAZIL, Ceará, 2 males, Crato, Serra do Araripe , V.1969, M. Alvarenga col. ( PMAE)   ; Pernambuco, 6 males, Caruaru , IV.1972, M. Alvarenga col. ( PMAE)   ; Distrito Federal, 5 males, Brasília, Ecological Reserve of Roncador , forest, 29.X.19781– 7.X.1982, window trap, J. Dalmáceo ( IBGE)   ; Minas Gerais, 4 males, Varginha , II.1972, M. Alvarenga col. ( PMAE)   ; Espírito Santo, 7 males, Cariacica, Reserva Biológica de Duas Bocas , 17.IX–10.X.1996, C. O. Azevedo & E. H. Freitas col. ( UFES)   ; Rio de Janeiro, 2 males   , Rio de Janeiro, I–II.1972, M. Alvarenga col. ( PMAE)   ; São Paulo, 2 males, Mogi­guaçu, Fazenda Campiminas , 29–31.XII.1969, JM & BA Campbell col. ( CNCI)   ; 3 males, Bauru, Est. Ecol., Brazilian savannah, 17.IX–10.X.1992, pan trap, S. S. Ruiz col. ( UFES)   ; 1 male, São Carlos , forest, 12.I.1989, Malaise trap, L. A. Joaquim col. ( DCBU)   ; Paraná, 178 males, Ponta Grossa, Vila Velha, Reserve IAPAR, Br 376, 126 males, Jundiaí do Sul , Monte Verde Farm , 42 male,   Telêmeco Borba , Reserva Samuel Klabin , 6 males, Colombo , Embrapa , Br 476, Km 20, 4 males,   Antonina, Reserva Sapitanduva, 2 males, Fênix , State Reserve ITCF, 1 male,   São José dos Pinhais, Serra do Mar , Br 277, km 54, 26.X.1987 – 4.VIII.1988, all Malaise trap, Profaupar survey ( DZUP)   ; 5 males, Curitiba, Capão Imbuia , 4–25.II.1969, C. Porter & A. Garcia col. ( MCZH)   ; 2 males, Curitiba , 20– 31.I.1969, L. Stange col. ( MCZH)   .

Variation. — Body wholly dark castaneous or testaceous, clypeus darker, mandible, antenna, legs lighter; propodeal disc longer, depressions much shallower or virtually absent, small, rounded, pit subcircular, tufts more or less dense, hairs longer or shorter; the dorsal lobe of aedeagus not so angled, its subapical tooth of ventral margin more serrated and basal tooth of aedeagus more directed upward, or as a stub in one specimen.

Etymology. — The specific epithet refers to the lateral aspect of the dorsal body of aedeagus.

Distribution. — Brazil (Ceará, Pernambuco, Distrito Federal, Minas Gerais, Espírito Santo, Rio de Janeiro, São Paulo, Paraná).


Universidade Federal do Parana, Colecao de Entomologia Pe. Jesus Santiago Moure


Universidade Federal do Espirito Santo


Canadian National Collection Insects


Universidade Federal de Sao Carlos