Dissomphalus hemisphaericus, Azevedo, 2003

Azevedo, C. O., 2003, Synopsis of the Neotropical Dissomphalus (Hymenoptera, Bethylidae), Zootaxa 338 (1), pp. 1-74: 43-44

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

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Dissomphalus hemisphaericus

sp. nov.

Dissomphalus hemisphaericus   sp. nov. ( Figs. 67–71 View FIGURES 60–71 )

Description. — Male. Body length 4.75 mm; LFW 3.5 mm. Color: head black; mesosoma, metasoma and clypeus dark castaneous; mandible, legs, and antennae castaneous, scape lighter; palpi light castaneous; wings subhyaline.

Head: mandible bidentate. Clypeus trapezoidal. First four antennal segments in a ratio of 3:1:1:1, segment XI 1.71 X as long as broad, sensillae conspicuous. Frons strongly coriaceous, punctures inconspicuous, shallow, separated by 0.5–1.7 X their diameters. LH 1.01 X WH; WF 0.6 X WH; 1.17 X HE; OOL 1.14 X WOT; DAO 0.41 X WOT; posterior ocelli distant from the vertex crest 1.64 X DAO, frontal angle of ocellar triangle acute. Vertex straight, corners rounded. VOL 0.5 X HE.

Mesosoma: thorax coriaceous as frons. Pronotal disc 0.51 X length of mesoscutum. Propodeal disc 0.65 X as long as wide. Fore femur 3.1 X as long as thick.

Metasoma: tergite II with pair of elliptical pits, distant each other 4.3 X their length, distant from posterior margin of tergite I 0.3 X their length, closer to the lateral margin than the middle, inner part of each pit covered by translucid sclerite, so that the hole is hemispheric ( Figs. 67–68 View FIGURES 60–71 ). Hypopygium with median stalk 1.2 X as long as plate, posterior margin straight. Genitalia ( Figs. 69–70 View FIGURES 60–71 ): paramere with apex truncate and inclined, wider than base, dorsal and ventral margin straight; aedeagus with ventral ramus little shorter than dorsal body, laminar, surface vertical, inner margin a little concave below the rounded apex, outer surface of apex with triangular laminar expansion directed down and outward; dorsal body with two pairs of apical lobes ( Fig. 71 View FIGURES 60–71 ), outer pair laminar, surface vertical, dorsal margin convex and directed inward, wide and with rounded apex in lateral view, ventral margin serrated, inner pair membranous, stout, and hairy, slightly shorter than outer lobe; basal process with median tooth thick short and apex truncate; apodeme extending beyond the elliptical genital ring.

Material examined. — HOLOTYPE: male, BRAZIL, Amazonas , Manaus, Reserve 1112, 17.VI.1986, Malaise trap, B. Klein col. ( INPA)   . PARATYPES: BRAZIL, Amazonas, Manaus   , 2 males, Reserve 1112, 1 male, Reserve 1210, 6.II–26.XI.1986, Malaise trap, B. Klein col. ( INPA)   ; 2 males, Reserve Ducke , 29.VII.1992, glue trap 2m, Vidal & Vidal col. ( INPA)   ; 4 males, VI.1972, F.M. Oliveira col. ( PMAE)   ; Pará, 1 male, Oriximiná, Alcoa Mineração, Rio Trombetas , 7–25.X.1982, Malaise trap, Rafael, Binda & Vidal col. ( INPA)   ; 1 male, Serra Norte, Rio Parauapebas , VIII–IX.1982 ( OSUC)   ; 1 male, Tucuruí, Rio Tocantins, base 4, 11.XII.1985, interception trap, N. Degalier col. ( MPEG)   ; Rondônia, Ariquemes   , 1 male, Rio Ji­paraná , 28.X.1986, Malaise trap, J. A. Rafael col. ( INPA)   ; 1 male, 62 km SE, 8–20.XI.1984, W. J. Hanson col. ( EMUS)   ; ECUADOR, Sucumbios, 4 males, Sacha Lodge , 0.5°S 76.5°W, 290m, 3–16.VIII.1994, Malaise trap, P. Hibbs col. ( LACM) GoogleMaps   ; PERU, 1 male, Loreto, Iquitos, Granja UNAP, 4–7.II.1984, L. Huggert col. ( PMAE)   .

Variation. — Mesosoma black, mandible darker, antennae lighter, frons not so strongly coriaceous, aedeagus of specimens from Rondônia without basal process.

Etymology. — The specific epithet refers to the shape of tergal processes.

Distribution. — Brazil (Amazonas, Pará, Rondônia), Ecuador, Peru.


Instituto Nacional de Pesquisas da Amazonia


Oregon State University


Museu Paraense Emilio Goeldi


Natural History Museum of Los Angeles County