Dissomphalus alticlypeatus, Azevedo, 2003

Azevedo, C. O., 2003, Synopsis of the Neotropical Dissomphalus (Hymenoptera, Bethylidae), Zootaxa 338 (1), pp. 1-74: 23

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

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Dissomphalus alticlypeatus

sp. nov.

Dissomphalus alticlypeatus   sp. nov. ( Figs. 23–25 View FIGURES 11–25 )

Description. — Male. Body length 2.00 mm; LFW 1.5 mm. Color: head, mesosoma and clypeus dark castaneous; metasoma, mandible and antenna castaneous; legs and palpi light castaneous; wings hyaline.

Head: mandible tetradentate. Clypeus with median lobe ill­defined, weakly tridentate, median carina high and angulate in profile. First four antennal segments in a ratio of 15:8:5:6, segment XI 1.86 X as long as broad. Frons weakly coriaceous, punctures inconspicuous. LH 1.04 X WH; WF 0.6 X WH; 1.23 X HE; OOL 0.84 X WOT; DAO 0.36 X WOT; posterior ocelli distant from the vertex crest 1.0 X DAO, frontal angle of ocellar triangle acute. Vertex straight, corners broadly rounded. VOL 0.55 X HE.

Mesosoma: thorax coriaceous as frons. Pronotal disc depressed forward, 0.81 X length of mesoscutum. Notauli very weak, absent in the posterior half of mesoscutum. Parapsidal furrows ill­defined, virtually absent. Propodeal disc 1.0 X as long as wide. Fore femur 3.63 X as long as thick.

Metasoma: tergite II with pair of ovoid lateral depressions, distant each other 2.0 X their small diameters, distant from posterior margin of tergite I 1.0 X their small diameters, each depression with rounded pit, placed near the inner margin, with tuft of hairs, the most lateral one directed outward and distinctly longer than the others. Hypopygium with stalk 1.7 X longer than plate, posterior margin strongly concave ( Fig. 23 View FIGURES 11–25 ). Genitalia ( Figs. 24– 25 View FIGURES 11–25 ): paramere with base 2.0 X wider than apex, apex oblique, with two small protuberances, dorsal margin angulate and much developed inward and downward, ventral margin nearly straight; volsella with cuspis long; aedeagus with ventral ramus slightly longer than dorsal body, laminar, surface horizontal, narrowing evenly from base to the truncate and inclined apex; dorsal body with two pairs of apical lobes, outer pair evenly wide, with apex with inner corner angulate and outer corner rounded in dorsal view, and rounded in lateral view, inner pair membranous, thin and hairy; apodeme extending beyond the elliptical genital ring.

Material examined. — HOLOTYPE: male, BRAZIL, Pernanbuco , Caruaru, IV.1972, M. Alvarenga col. ( PMAE)   . PARATYPES: 3 males, BRAZIl, same data as holotype ( PMAE)   .

Variation. — Depressions of tergal processes deeper, pits smaller or larger.

Comments. — This is the only species of gilvipes   species­group with ventral ramus of aedeagus longer than dorsal body. The inner and outer lobe of aedeagus hard to separated.

Etymology. — The specific epithet refers to the high median carina of clypeus.

Distribution. — Brazil (Pernambuco).