Dissomphalus gordus, Azevedo, 2003

Azevedo, C. O., 2003, Synopsis of the Neotropical Dissomphalus (Hymenoptera, Bethylidae), Zootaxa 338 (1), pp. 1-74 : 46-47

Dissomphalus gordus sp. nov. ( Figs. 82–87 )

Description. — Male. Body length 4.5 mm; LFW 3.12 mm. Color: head and mesosoma black; metasoma, clypeus, mandible and antennae dark castaneous, scape lighter; legs castaneous; palpi light castaneous; wings subhyaline.

Head: mandible bidentate ( Fig. 82 ). Clypeus trapezoidal ( Fig. 83 ). First four antennal segments in a ratio of 13:5:5:6, segment XI 1.43 X as long as broad, sensillae conspicuous. Frons strongly coriaceous, punctures inconspicuous, shallow, separated by 0.3–1.5 X their diameters. LH 0.98 X WH; WF 0.61 X WH; 1.38 X HE; OOL 1.14 X WOT; DAO 0.36 X WOT; posterior ocelli distant from the vertex crest 1.2 X DAO, frontal angle of ocellar triangle acute. Vertex straight, corners rounded. VOL 0.48 X HE.

Mesosoma: thorax coriaceous as frons. Pronotal disc 0.64 X length of mesoscutum. Propodeal disc 0.67 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 5.0 X their length, distant from posterior margin of tergite I 0.67 X their length, closer to the lateral margin than the middle, placed at the inner area of rounded depression, inner part of each pit covered by translucid sclerite ( Fig. 84 ), so that the hole is hemispheric and inclined, from which emerges small tuft of hairs ( Fig. 85 ). Hypopygium with median stalk 1.43 X as long as plate, posterior margin straight. Genitalia ( Fig. 86–87 ): paramere wider medially, with apex as a triangular expansion, dorsal margin convex, ventral margin straight; aedeagus entirely gibbous, ventral ramus much shorter than dorsal body, laminar, surface inclined, basal half fused, apical half narrowing gradually to the rounded apex in lateral view; dorsal body with two pairs of apical lobes, outer pair laminar apically, surface vertical, apex rounded in lateral view, with rim hairy below, inner pair membranous, stout and hairy; basal process as a stout expansion, large and somewhat membranous, basal bar dilated above; apodeme not extending beyond the elliptical genital ring.

Material examined. — HOLOTYPE: male, BRAZIL, Paraná, Antonina, Reserva Sapitanduva , 29.IX.1987; Malaise trap, Profaupar Survey ( DZUP) . PARATYPES: BRAZIL, Rio de Janeiro, 4 males , Rio de Janeiro, I.1972, M. Alvarenga col. ( PMAE) ; São Paulo, 1 male, São Carlos, Canchim Farm , forest, 7.XI.1985, sweeping, A. Souza col. ( DCBU) ; 2 males, Salesopólis, Boraceia Biological Station , 5.VII–6.IX.1997, Malaise trap, C. I. Yamamoto col. ( MSZP) ; Paraná, 3 males, Antonina, Reserva Sapitanduva , 4.VIII.1986 – 14.IX.1987, 1 male, Colombo, Embrapa, Br 476. Km 20, 3.XI.1986 – 23.II.1987, Malaise trap, Profaupar Survey ( DZUP) .

Variation. — Metasoma darker, depression of tergal processes deeper.

Etymology. — The specific epithet refers to the aedeagus gibbous.

Distribution. — Brazil (Rio de Janeiro, São Paulo, Paraná).

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).