Dissomphalus hirtus Alencar & Azevedo, 2006

Alencar, I. D. C. C. & Azevedo, C. O., 2006, Definition of the coronatus species-group (Hymenoptera: Bethylidae, Dissomphalus) with description of thirteen new species, Zootaxa 1330, pp. 1-26 : 16-18

Dissomphalus hirtus Alencar & Azevedo , New Species

( Figs. 22–23 )

Diagnosis: cuspis with apical part dilated and apex straight; aedeagus with ventral ramus somewhat shorter than dorsal body; dorsal body with two pairs of apical lobes, base of outer pair with lateral angled spoon-like structure, apical part thinner than basal with concavity mesad; crown-process small.

Description: male, body length 2.8mm; LFW 2.1mm. Color: head black; clypeus and mesosoma dark castaneous; metasoma rufous castaneous; mandible, palpi and legs light castaneous; antenna light castaneous and gradually darker in distal part; wings subhyaline.

Head: mandible tridentate, uppermost tooth inconspicuous. Clypeus with trapezoidal median lobe, median tooth short, median carina complete. First four antennal segments in ratio of ~18:8:5:6, segment XI 2.0x as long as wide. Frons weakly coriaceous, shiny, punctures shallow and inconspicuous, separated by 1.0–1.5x their diameter. LH 1,0x WH; WF 0.6x WH; WF 1.5x HE; OOL 0.9x WOT; DAO 0.3x WOT; posterior ocelli distant from crest of vertex 1.6x DAO. Vertex convex with angulate corners; VOL 1.5x HE.

Mesosoma: thoracic dorsum weakly coriaceous, shiny, punctures as those of frons. Pronotal disc 0.6x length of mesoscutum, anterior margin not carinate with rounded foveae. Notaulus complete. Propodeal disc 0.9x as long as wide, striae strongly developed and irregular only in upper corners, tending to reach median region, median carina incomplete, posterior region polished and shiny; declivity areolate-rugose. Fore femur 3.2x as long as wide.

Metasoma: tergum II with pair of circular and shallow lateral depressions, separated by 0.6x their diameter, each depression with small tuft of setae directed backward; anterolateral margin with long setae. Hypopygium with posterior margin straight.

Genitalia ( Figs. 22–23 ): paramere wide in lateral view, inner surface of apex with distinct long seta, apex arched mesad, dorsal margin straight with subapical concavity, base of paramere developed, ventral margin concave. Basiparamere rounded in ventral view. Cuspis arched with apical part dilated and apex straight, digitus arched ventrally, acutely pointed, apical margin serrate, base with short setae and protuberance acute directed dorsally. Aedeagus with ventral ramus somewhat shorter than dorsal body, laminar, surface horizontal and arched ventrally, narrowing to apex and somewhat directed mesad; dorsal body with two pairs of apical lobes, outer pair laminar, surface vertical, base wide with lateral angled spoon-like structure, apical part thinner with concavity mesad; crown-process small; inner pair long, membranous and hairy. Apodeme of aedeagus not extending beyond elliptical genital ring.

Material examined: HOLOTYPE: male, VENEZUELA, Mérida, Tabay, La Macuy, 2600m, [8°38’16”N 71°4’47”W], 11–27.VII.1986, B. Gill col. ( PMAE). PARATYPE: 1 male same data as holotype ( PMAE).

Variation: some specimens have the propodeal disc with more striae, some of them reaching median part, median carina longer, posterior part with more restrict polished and shiny corners, metasoma dark castaneous.

Comments: this species does not have tuft of setae as dense as in other species of the coronatus group thus resembling some specimens of the D. punctatus group. This species has dorsal body completely different from all others in the group but its arched cuspis with the apical part dilated and apex straight is quite similar to that of D. auritus , and the small crown-process is reminiscent of D. coronatus , D. declinatus , D. decussatus , D. flexuosus , D. galeatus and D. pronus .

Etymology: the specific epithet comes from Latin and refers to the distinct seta at the apex of the paramere.

Distribution: Venezuela.

Figures

FIGURES 12 – 23. 12 – 14, Dissomphalus declinatus sp. nov. 12, metasoma, dorsal view; 13, genitalia, ventral view; 14, genitalia, dorsal view; 15 – 17, Dissomphalus decussatus sp. nov. 15, paramere, lateral view; 16, genitalia, ventral view; 17, genitalia, dorsal view; 18 – 19, Dissomphalus flexuosus 18, genitalia, ventral view; 19, genitalia, dorsal view; 20 – 21, Dissomphalus galeatus sp. nov. 20, genitalia, ventral view; 21, genitalia, dorsal view; 22 – 23, Dissomphalus hirtus sp. nov. 22, genitalia, ventral view; 23, genitalia, dorsal view. (Scale bars = 250 μm).