Dissomphalus ferocus, Azevedo, 2003

Azevedo, C. O., 2003, Synopsis of the Neotropical Dissomphalus (Hymenoptera, Bethylidae), Zootaxa 338 (1), pp. 1-74 : 44-45

Dissomphalus ferocus sp. nov. ( Figs. 72–76 )

Description. — Male. Body length 5.1 mm; LFW 3.25 mm. Color: head and mesosoma black; metasoma and clypeus dark castaneous; antennae, mandible and legs castaneous; palpi light castaneous; wings subhyaline.

Head: mandible bidentate. Clypeus trapezoidal. First four antennal segments in a ratio of 18:7:6:7, segment XI 1.57 X as long as broad, sensillae conspicuous. Frons strongly coriaceous, punctures shallow, separated by 0.2–1.0 X their diameters. LH 1.02 X WH; WF 0.63 X WH; 1.38 X HE; OOL 1.39 X WOT; DAO 0.34 X WOT; posterior ocelli distant from the vertex crest 1.77 X DAO, frontal angle of ocellar triangle acute. Vertex slightly concave medially, corners rounded. VOL 0.48 X HE.

Mesosoma: thorax coriaceous as frons. Pronotal disc 0.51 X length of mesoscutum. Propodeal disc 0.59 X as long as wide, with small polished area posteriorly. Fore femur 3.3 X as long as thick.

Metasoma: tergite II with pair of elliptical pits, distant each other 6.5 X their length, distant from posterior margin of tergite I 0.88 X their length, closer to the lateral margin than the middle, placed at the inner area of rounded shallow depression ( Fig. 72 ), inner part of each pit covered by translucid sclerite, so that the hole is hemispheric and inclined, from which emerges small tuft of hairs ( Fig. 73 ). Hypopygium with median stalk 1.7 X as long as plate, posterior margin straight. Genitalia ( Figs. 74–75 ): paramere with apex slightly convex and directed inward, dorsal margin straight, ventral margin badly convex; basivolsella dilated and well­differentiated from basiparamere internally; aedeagus with ventral ramus as long as dorsal body, angled medially outward, apical area with four teeth, being the apical one larger; dorsal body with three pairs of apical lobes, outer pair bulging, basal margin concave, angled laterally, apex rounded, ventral margin denticulate and excavated medially ( Fig. 76 ), inner pairs membranous, stout and hairy, being the median pair longer than the ventral one; basal process with two teeth projected outward; apodeme extending beyond the elliptical genital ring.

Material examined. — HOLOTYPE: male BRAZIL, Rondônia, Ouro Preto d’Oeste , 26.VIII.1987, C. Elias col. ( DZUP) . PARATYPES: ECUADOR, Sucumbios, 1 males, Sacha Lodge , 0.5°S 76.5°W, 290m, 3–16.VIII.1994, Malaise trap, P. Hibbs col. ( LACM) ; Chinchipe, 1 male, Rio Bombuscaro, Zamora , 4.12°S 78.98°W, 1050m, 26.VI–4.VII.1994, Malaise trap, P. Hibbs col. ( LACM) ; Napo, Limoncocha , 1 male, Rio Napo, 22.I.1974, Malaise trap, Boyce & Drummond III col. ( FSCA) ; 1 male, 28.VI.1976, S. + J. Peck col. ( PMAE) .

Variation. — Body smaller, frons less coriaceous, head slightly wider, vertex less concave or straight.

Etymology. — The specific epithet refers to the shape of ventral ramus of aedeagus.

Distribution. — Brazil (Rondônia), Ecuador.

Figures

FIGURES 72–87. 72–76, Dissomphalus ferocus sp. nov. 72, metasoma, latero­dorsal view; 73, tubercle, dorsal view; 74, genitalia, ventral view; 75, genitalia, dorsal view; 76, dorsal body of aedeagus, ventral view; 77–81, Dissomphalus undatus sp. nov. 77, genitalia, ventral view; 78, genitalia, dorsal view; 79, outer lobe of aedeagus, lateral view; 80, outer lobe of aedeagus, ventral view; 81, inner lobe of aedeagus, ventral view; 82–87, Dissomphalus gordus sp. nov. 82, mandible, frontal view; 83, clypeus, dorsal view; 84, metasoma, latero­dorsal view; 85, tubercle, dorsal view; 86, genitalia, ventral view; 87, genitalia, dorsal view; outer lobe of aedeagus, lateral view. (Scale bars = 0.5 mm, except for figures 73, 85 = 0.1 mm).