Dissomphalus latimerus, Azevedo, 2003

Azevedo, C. O., 2003, Synopsis of the Neotropical Dissomphalus (Hymenoptera, Bethylidae), Zootaxa 338 (1), pp. 1-74: 48-49

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

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Dissomphalus latimerus

sp. nov.

Dissomphalus latimerus   sp. nov. ( Figs. 88–90 View FIGURES 88–99 )

Description. — Male. Body length 3.0 mm; LFW 2.0 mm. Color: head and mesosoma black; metasoma and clypeus dark castaneous; mandible, antenna, palpi and legs castaneous; wings subhyaline.

Head: mandible tridentate. Clypeus trapezoidal. First four antennal segments in a ratio of 14:5:4:5, segment XI 1.43 X as long as broad. Frons somewhat strongly coriaceous, punctures inconspicuous, shallow, separated by 0.5–1.0 X their diameters. LH 1.0 X WH; WF 0.6 X WH; 1.19 X HE; OOL 1.43 X WOT; DAO 0.43 X WOT; posterior ocelli distant from the vertex crest 1.25 X DAO, frontal angle of ocellar triangle acute. Vertex straight, corners rounded. VOL 0.49 X HE.

Mesosoma: thorax coriaceous as frons. Pronotal disc 0.67 X length of mesoscutum. Propodeal disc 0.62 X as long as wide, with small polished area posteriorly. Fore femur 2.7 X as long as thick.

Metasoma: tergite II with pair of drop­shaped pits, distant each other 4.67 X their length, distant from posterior margin of tergite I 0.33 X their length, closer to the lateral margin than the middle, each pit with high rim, sharpened anteriorly and rounded posteriorly, with tuft of hairs directed backward, pits surrounded by rounded depression, laterally with four distinct setae ( Fig. 88 View FIGURES 88–99 ). Hypopygium with median stalk 1.47 X as long as plate, posterior margin straight. Genitalia ( Figs. 89–90 View FIGURES 88–99 ): paramere very wide, apex slightly directed inward; aedeagus with ventral ramus shorter than dorsal body, laminar, surface horizontal, outer and inner margins parallel, apex thin and rounded; dorsal body with two pairs of apical lobes, outer pair laminar, surface convex, apex rounded, inner pair membranous, stout and hairy; apodeme extending beyond the elliptical genital ring.

Material examined. — HOLOTYPE: male, BRAZIL, Amazonas , Manaus, Reserve Ducke, 15.IV.1992, glue trap, 1 m, Vidal & Vidal col. ( INPA)   . PARATYPES: BRAZIL, Amazonas, Manaus   , 15 males, same data as holotype except 8.IV–17.VII.1992 ( INPA)   ; 1 male, Reserve 1208, 1 male, Reserve 1210, 1 male, Reserve 1310, 5.II.1985 – 3.IX.1986, Malaise trap, B. Klein col. ( INPA)   .

Variation. — Surface of ventral ramus of aedeagus twisted.

Etymology. — The specific epithet refers to the width of paramere.

Distribution. — Brazil (Amazonas).


Instituto Nacional de Pesquisas da Amazonia