Dissomphalus spinosus, Azevedo, 2003

Azevedo, C. O., 2003, Synopsis of the Neotropical Dissomphalus (Hymenoptera, Bethylidae), Zootaxa 338 (1), pp. 1-74: 41

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

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Dissomphalus spinosus

sp. nov.

Dissomphalus spinosus   sp. nov. ( Figs. 60–62 View FIGURES 60–71 )

Description. — Male. Body length 3.5 mm; LFW 2.58 mm. Color: head and mesosoma black; metasoma and clypeus dark castaneous; antenna, mandible and legs castaneous, distal flagellomeres darker; palpi light castaneous; wings subhyaline.

Head: mandible bidentate. Clypeus trapezoidal. First four antennal segments in a ratio of 15:6:5:6, segment XI 2.0 X as long as broad. Frons strongly coriaceous, punctures large, shallow, separated by 0.2–1.0 X their diameters. LH 1.03 X WH; WF 0.55 X WH; 1.1 X HE; OOL 1.13 X WOT; DAO 0.32 X WOT; posterior ocelli distant from the vertex crest 2.0 X DAO, frontal angle of ocellar triangle acute. Vertex straight, corners rounded. VOL 0.52 X HE.

Mesosoma: thorax coriaceous and punctated as frons. Pronotal disc 0.73 X length of mesoscutum. Propodeal disc 0.59 X as long as wide. Fore femur 2.7 X as long as thick.

Metasoma: tergite II with pair of subcircular sublateral depressions, with some outer setae, distant from posterior margin of tergite I 0.5 their diameter, distant each other 2.0 X their width, each one with tubercle flat­topped placed near the inner margin of depression, with pit on the top, with dense tuft of hairs. Hypopygium with median stalk 2.0 X as long as plate, posterior margin straight. Genitalia ( Fig. 60–61 View FIGURES 60–71 ): paramere with apex slightly arched inward, dorsal margin straight, ventral margin straight below and concave apically; aedeagus with ventral ramus as long as dorsal body, laminar, surface vertical and convex, apex somewhat rounded in lateral view ( Fig. 62 View FIGURES 60–71 ); dorsal body with three pairs of apical lobes, outer pair laminar, surface vertical, with apex strongly curved downward, apical margin strongly serrated ( Fig. 62 View FIGURES 60–71 ), inner pairs stout, membranous and hairy, being the dorsal one smaller; basal processes with pair of projections, each one with two long and sharpened teeth, apodeme extending beyond the elliptical genital ring.

Material examined. — HOLOTYPE: male, BRAZIL, Paraná, Jundiaí do Sul, Monte Verde Farm, 26.X.1987, Malaise trap, Profaupar survey ( DZUP)   . PARATYPES: BRAZIL, 2 males, same data of holoype, except 14.XII.1987 – 11.IV.1988 ( DZUP)   .

Etymology. — The specific epithet refers to the spinose basal processes of aedeagus.

Distribution. — Brazil (Paraná).


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