Acrepyris rugicollis ( Kieffer, 1905 ) Azevedo & Alencar, 2009

Azevedo, Celso O. & Alencar, Isabel D. C. C., 2009, Rediscovery of Pristepyris Kieffer (Hymenoptera, Bethylidae), a new synonym of Acrepyris Kieffer, Zootaxa 2287 (1), pp. 45-54 : 46-49

Acrepyris rugicollis ( Kieffer, 1905) comb. nov.

( Figs. 1–9 )

Pristepyris rugicollis Kieffer 1905 , 29: 119–120 (male description), 143 (fig. 8); Kieffer 1908, 76: 21 (list); Kieffer 1914, 41: 421 (key), 421–422 (description), 421 (fig. 159); Gordh & Móczár 1990, 46: 140 (catalog); comb. nov.

Material examined. Holotype, male: Malaka {= Malaysia}, Serak , [1°23' N 104°14' E], 19, Collection Ernest André, 1914 ( MNHN).

Diagnosis. Male. This species can be separated from all others by the medial clypeal lobe being rounded; the median groove of pleurosternum being heart-shaped; and also the apical lobe of the aedeagus being narrow and curved ventrad. Female unknown.

Description. Holotype male ( Fig. 1 ). Body length 5.7 mm. LFW 4.0 mm.

Color. Head, clypeus and mesosoma black except posterior end of pronotal disc castaneous, metasoma castaneous, antenna gradually darker distally from light castaneous to dark castaneous, mandible reddish, legs and veins light castaneous, wings sub-hyaline.

Head ( Fig. 2 ). Mandible with five sharpened apical teeth, superior ones gradually smaller dorsally ( Fig. 3 ). Clypeus short, with median lobe rounded, 0.2x as long as large; median carina conspicuous, high and arched in profile. Antenna long, 3.5 mm, reaching anterior half of propodeum; scape arched, widened distad; flagellomeres long; pubescence erect, setae long. First four antennal segments ~10:3:8:8; segment XI 5.0x as long as wide. Frons weakly coriaceous, densely punctuate to punctulate posteriorly. Frontal groove present, incomplete anteriorly. Ocellar triangle compact, elevate, frontal angle acute, ocelli small. Anterior ocellus placed posteriorly to imaginary line of eye top. LH 1.0x WH; WF 0.6x WH; WF 1.2x HE; OOL 1.3x WOT; DAO 0.3x WOT; posterior ocellus distant from crest of vertex 2.5x DAO. Vertex convex; corner rounded; VOL 0.7 HE. Temple slightly convergent posteriorly. Occipital carina present ventrally and dorsally.

Mesosoma ( Figs. 4 –6). Thorax dorsum shinning, punctulate, setae long. Pronotal disc trapezoidal; side slightly concave; anterior region elevate medially, rugulose-lacunose ( Fig. 4 ). Notaulus conspicuous, incomplete anteriorly, convergent posteriorly, wide, anterior and posterior end slightly dilated, deep, scrobiculate inside, not reaching anterior and posterior margin of mesoscutum. Parapsidal furrow incomplete and inconspicuous anteriorly, almost straight, narrow, shallow. Lateral of mesoscutum not elevate with large and elongate fovea anteriorly present ( Fig. 4 ). Scutellar groove deep, narrow, concave, dilated laterally. Metanotum with large median elevation; median fovea sub-trapezoidal; metanotal groove foveolate laterally, first one slightly large, sub-triangular, punctulate inside, other ones narrower than first one. Propodeal disc 1.2x as long as wide, anterior carina wide laterally and narrow medially, disc rugulose; spiracle bacile-shaped, arched, placed completely at disc. Lateral of propodeum strigulate to areolate posteriorly. Propodeal declivity weak, convex in lateral view, areolate. Mesopleuron with subtegular groove dilated anteriorly and uniformly narrow posteriorly, foveolate inside; episternal groove continuous to subtegular one, foveolate; mesopleural callus elevate, polished and shinning; anterior region areolate-rugose and punctuate to puncticulate posteriorly, median region with large and shallow pit ( Fig. 5 ). Pleurosternum with heart-shaped groove; acetabular carina wide medially followed by large foveae (Fig. 6). Tarsal claws trifid, teeth acute.

Wings. Fore wing with radial vein very long and slightly curved forward; metacarpus present with almost same length of stigma; basal vein truncate and inclined; stigma narrow and very elongate. Hind wing with five apical hamuli.

Metasoma. Shiny, puncticulate to imbricate-puncticulate, setose laterally from IV tergite. Hypopygium not divided, stalk long, posterior margin straight ( Fig. 7 ). Genitalia ( Figs. 8 ): paramere bilaminar, placed laterally, slightly convex, slightly shorter than basiparamere; apical margin convex dorsally and inclined ventrally in lateral view; ventral and dorsal margin almost straight, with weak concavity medially; external surface densely setose. Basiparamere with dorsal margin convex apically and concave basally. Basivolsella long, margin strongly convex with some long setae. Digitus short, apical margin dentate, apex convex. Cuspis 2.5x longer than digitus, arched, base with projection dorsad, apex convex. Aedeagus divided into three valvae; dorsal valves 1.8x as long ventral one, apex divided, apical lobe narrow and curved ventrad; middle valves 1.5x as long as ventral one, gradually wide basally, apical region with ventral concavity, apex projected ventrad; ventral valves short, apical region folded dorsad and basad. Genital ring narrow. Basal ring reduced. Apodeme not extending beyond genital ring.

Remarks. This species is promptly recognized as belonging to Pristocerinae by having the metanotum well developed medially. Within this subfamily, there are several characters that place this species in Acrepyris such as the conspicuous notauli and parapsidal furrows, the forewings with median-sized stigma and metacarpus, the undivided parameres, the undivided hypopygium without lamellar lobes, and the aedeagus with three pairs of valvae. The latter two characters are the most important to conclude that this species is Acrepyris , because differ it from related genera as Pristocera Klug and Apenesia Westwood. Because this is the type-species of Pristepyris , the genus is considered junior synonym of Acrepyris .

Figures

FIGURE 1. Habitus of Acrepyris rugicollis (Kieffer, 1905) comb. nov.

FIGURES 2–5. Acrepyris rugicollis (Kieffer, 1905) comb. nov. 2, head in dorsal view; 3, mandible; 4, mesosoma in dorsal view; 5, mesopleuron; 6, pleurosternum.

FIGURES 7–9. Acrepyris rugicollis (Kieffer, 1905) comb. nov. 7, hypopigium, ventral view; 8–9, genitalia; 8, ventral view; 9, dorsal view.