Dissomphalus guttus, Azevedo, 2003

Azevedo, C. O., 2003, Synopsis of the Neotropical Dissomphalus (Hymenoptera, Bethylidae), Zootaxa 338 (1), pp. 1-74 : 49-50

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

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Dissomphalus guttus

sp. nov.

Dissomphalus guttus sp. nov. ( Figs. 91–93 View FIGURES 88–99 )

Description. — Male. Body length 2.63 mm; LFW 2.25 mm. Color: body and clypeus dark castaneous; mandible, antenna, palpi and legs light castaneous; wings subhyaline.

Head: mandible tridentate, the upper two very small. Clypeus subtrapezoidal. First four antennal segments in a ratio of 20:7:7:8, segment XI 1.6 X as long as broad. Frons somewhat strongly coriaceous, punctures inconspicuous. LH 1.0 X WH; WF 0.62 X WH; 1.21 X HE; OOL 1.29 X WOT; DAO 0.35 X WOT; posterior ocelli distant from the vertex crest 0.6 X DAO, frontal angle of ocellar triangle acute. Vertex straight, corners rounded. VOL 0.5 X HE.

Mesosoma: thorax less coriaceous as frons. Pronotal disc 0.52 X length of mesoscutum. Propodeal disc 0.68 X as long as wide, with small polished area posteriorly. Fore femur 3.2 X as long as thick.

Metasoma: tergite II with a pair of drop­shaped pits, distant each other 3.2 X their length, distant from posterior margin of tergite I 0.4 X their length, closer to the lateral margin than the middle, each pit with outer rim, sharpened anteriorly and rounded posteriorly, with tuft of hairs directed backward, pits surrounded by very shallow depression. Hypopygium with median stalk 1.4 X as long as plate, posterior margin straight. Genitalia ( Fig. 91–92 View FIGURES 88–99 ): paramere wide, apex rounded, with inner distinct setae directed inward; aedeagus with ventral ramus shorter than dorsal body, apical half thin and strongly curved downward; dorsal body with two pairs of apical lobes, outer pair laminar, surface vertical, wide and with rounded apex in lateral view, apex tridentate, directed downward, ventral margin with anterior elongate basal tooth ( Fig. 93 View FIGURES 88–99 ), inner pair membranous, stout and hairy; base of aedeagus strongly dilated upward; apodeme extending beyond the elliptical genital ring.

Material examined. — HOLOTYPE: male, COSTA RICA, San Vito de Coto Brus , Las Cruces, 1200m, 9.VII–7.VIII.1982, Malaise trap, B. Gill col. ( CNCI) . PARATYPES: COSTA RICA, 10 males, same data as holotype except 9.VII–12.IX.1982 ( CNCI) ; 2 males, Heredia, Est. Biol. La Selva , 1 male, 50–150m, 10.43 o N 84.02 o W, 1–6.VII.1993, Malaise trap 2, B.V. Brown & D.H. Feener col. ( LACM) GoogleMaps ; PANAMA, 1 male, Bocas del Toro, Wesko, Teribe , PILA, 50m, 17–24.X.1999, Malaise trap, A. Santos col. ( MUIP) ; ECUADOR, Pichincha, Tinalandia , 1 male, 14.VI.1976, S. + J. Peck col. ( PMAE) ; 3 males, 16 km SE Sto Domingo , 500m, VI–VIII.1985, S. + J. Peck col. ( PMAE) .

Variation. — Body longer, head and mesosoma black, depression of tergal processes slightly deeper.

Etymology. — The specific epithet refers to drop­shaped tergal processes.

Distribution. — Costa Rica, Panama.


Canadian National Collection Insects


Natural History Museum of Los Angeles County













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