Clistopyga longifemoralis Varga & Reshchikov

Varga, Oleksandr & Reshchikov, Alexey, 2015, New records of the genus Clistopyga Gravenhorst, 1829 (Hymenoptera: Ichneumonidae: Pimplinae) from the Oriental region, with description of a new species, Zootaxa 3964 (5), pp. 561-568 : 562-564

Clistopyga longifemoralis Varga & Reshchikov , sp.n.

( Figs 1 , 4 )

Material examined. Holotype: female, THAILAND, Chiang Mai, Huai Nam Dang NP, Thung Buatong View Point, 19°17.56'N, 98°36.029'E, 31.i–7.ii.2008, Malaise trap, leg. Anuchart & Thawatchai, T5601, QSBG. Paratype: female, Huai Nam Dang NP, 19°18.803'N, 98°36.395'E, 6–7.iii.2008, yellow pan trap, leg. Anuchart & Thawatchai, T5621, QSBG.

Diagnosis. This species can be distinguished from the other currently described Clistopyga species by a combination of the following characters: face polished and very sparsely punctate; clypeus and eye orbits widely yellow; mesosoma with red and yellow markings; metapleuron smooth, at most very sparsely punctate posteriorly; pleural carina distinct only on anterior 0.7 of mesopleuron; propodeum shining, weakly transversely finely wrinkled anteriorly, otherwise weakly granulate; hind wing with vein Cu 1 absent and vein cu-a not intercepted; metasoma closely punctate, reddish-brown; ovipositor upcurved, approximately 1.75–1.8 × length of the hind tibia.

This species is close to C. latifrontalis in the coloration of the head and mesosoma, the very sparsely punctate face and the hind wing venation, but differs in more abundant yellow coloration of temple, weaker sculpture on the propodeum, reddish-brown metasoma (yellow banded metasoma in C. latifrontalis ), and a longer ovipositor.

Description. Female (holotype) ( Fig. 1 ): Body length c. 9.5 mm, fore wing length c. 6 mm, ovipositor length c. 3.6 mm.

Head ( Figs 1 b, c). Antenna with 24 flagellomeres, first flagellomere 1.2 × longer than the second. Diameter of lateral ocellus 1.15 × ocellar-ocular distance. Frons smooth, shining. Face 0.7 × as high as wide, weakly convex medially, smooth, sparsely punctate centrally, with scattered white setae. Clypeus 0.7 × as high as wide, with long setae, its apex almost straight. Malar space 0.7 × the basal width of mandible. Upper tooth of mandible slightly longer than the lower tooth. Occipital carina mediodorsally complete and straight. Temple short, strongly narrowed behind eye. Eye large compared with Palaearctic species.

Mesosoma ( Figs 1 c, d, h). Pronotum smooth, shining. Epomia present. Mesoscutum with short, dense, white setae. Notauli present, strongly impressed on anterior 0.45 of mesoscutum. Scutellum strongly swollen, smooth, with setae as on mesoscutum and lateral carinae absent. Mesopleuron smooth, shining, very sparsely punctate on the lower part, with setae more sparse than on mesoscutum, epicnemial carina present on lower 0.8. Metapleuron smooth, shiny, almost impunctate anteriorly, with isolated punctures and setae on the posterior half. Pleural carina distinct on anterior 0.7. Propodeum with area apicalis delimited only laterally at apex, otherwise smooth, with traces of wrinkles on anterior 0.4 and weakly granulate, lateral and pleural areas with relatively dense white setae, spiracles round. Legs slender, hind leg with femur 4.3 × as long as wide, slightly shorter than the hind tibia, and the third tarsomere 1.1 × as long as fifth.

Wings ( Fig. 1 e). Fore wing with vein 3 rs-m absent. Hind wing with vein Cu 1 absent, vein cu-a not intercepted.

Metasoma ( Fig. 1 g). Tergites 1–5 closely punctate except for transverse smooth bands apically and concave area at base of first tergite, the remaining tergites sparsely punctate. First tergite about 1.1 × as long as its apical width, with dorsolateral carina complete and dorsal median carina extending to declivity. Second tergite 1.05 × as long as its apical width, basal and apical oblique grooves deep, central rhombic area weakly convex. Tergites 3–6 with two anterolateral sweelings. Ovipositor upcurved, 1.8 × the length of the hind tibia ( Fig. 1 f), the tip of lower valves with oblique ridges.

Colour. Body generally brownish-black. Antenna brownish, except yellow scape and pedicel. Face yellowish centrally, brownish below antennal sockets and around yellowish central spot. The following body parts marked with cream: inner orbits of eyes widely, clypeus, mandible on basal 0.55, malar space, temple, propleuron above fore coxae, upper and lower margin of pronotum, subtegular ridge, tegula, two anterolateral and central spots on mesoscutum, scutellum laterally, metascutellum. Pronotum black with red marks, mesoscutum red, mesopleuron red-yellowish (except behind subtegular ridge). Legs generally yellow, but coxae and trochanters cream, hind femur with brownish base and subapical spot, hind tibia with apical and indistinct subbasal brownish bands, and tarsomeres apically banded with brownish. Pterostigma brownish. Metasomal tergites dark brown. Ovipositor reddish with its sheaths black.

Variation. Antenna with 23–24 flagellomeres. Propodeum in the paratype weakly transversely wrinkled on its anterior 0.4. First tergite 1.1–1.15 × as long as its apical width. Second tergite 1.0–1.1 × as long as its apical width. Ovipositor 1.75–1.8 × the length of the hind tibia.

Male. Unknown.

Distribution. Currently known only from Huai Nam Dang National Park of Thailand ( Fig. 4 ).

Ecological note. Both specimens collected in an evergreen forest at an approximate altitude of 1300–1500 m. Etymology. This species is named after the relatively long femora.

Figures

FIGURE 1. Clistopyga longifemoralis sp. nov., holotype female: a) lateral view of habitus; b) frontal view of head; c) dorsal view of mesoscutum and head; d) lateral view of head and mesosoma; e) wings; f) lateral view of ovipositor; g) dorsal view of metasomal tergites 1 – 5; h) dorsal view of propodeum.

FIGURE 4. Distribution map of Clistopyga spp. in the Oriental region: C. longifemoralis sp. n. — circle; C. latifrontalissquare; C. sziladyi— triangle.