Clistopyga latifrontalis ( Uchida, 1941 )

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 : 564-566

Clistopyga latifrontalis ( Uchida, 1941)

( Figs 2 , 4 )

Material examined. Female, Thailand, Nan Doi Phu Kha NP, Office 3, 19°12.326'N 101°4.765'E, 1332 m., 15– 22.ii.2008, Malaise trap, leg. Charoen & Nikom, T5455, QSBG; Female, THAILAND, Chiang Mai, Huai Nam Dang NP, Helipad, 19°18.33'N, 98°36.289'E, 14–21.ix.2007, Malaise trap, leg. Anuchart & Thawatchai, T5514, QSBG; Female, same locality as previous specimen, 17–13.iii.2008, Malaise trap, leg. Anuchart & Thawatchai, T5638, QSBG; Female, Thung Buatong View Point, 19°17.56'N, 98°36.029'E, 30.xii–7.i.2008, Malaise trap, leg. Anuchart, T5580, QSBG.

Diagnosis. This species can be distinguished from other 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 marks; metapleuron smooth, shining, with isolated punctures; pleural carina distinct only on anterior 0.55 of mesopleuron; propodeum smooth, sparsely punctate anteriorly, weakly transversely wrinkled at least centrally and weakly granulate apically; hind wing with vein Cu 1 absent, vein cu-a not intercepted; metasomal tergites 2–7 densely punctate, subapically and laterally yellow; ovipositor upcurved, 1–1.2 × the length of the hind tibia.

This species is close to C. incitator in coloration of head and mesosoma, but differs in the following characters: Yellow banded metasoma (from red to black, but always without yellow bands in C. incitator ); a very sparsely punctate face (closely punctate centrally in C. incitator ); vein Cu 1 absent and vein cu-a of hind wing not intercepted (vein Cu 1 present and vein cu-a of hind wing intercepted below the middle in C. incitator ); and slenderer legs.

Re-description. (Based on female from T5455) ( Fig. 2 ). Body length c. 8.5 mm, fore wing c. 5.2 mm, ovipositor length 1.9 mm.

Head ( Figs 2 b, c). Antenna with 22 flagellomeres, first flagellomere about 1.36 × longer than the second. Diameter of lateral ocellus 0.6 × ocellar-ocular distance. Frons smooth, shining, with short, sparse, white setae. Face 0.8 × as high as wide, weakly convex medially, smooth, shining, very sparsely punctate, and with white setae which is more dense and longer than that on the frons. Clypeus 0.6 × as high as wide, weakly swollen basally, its apex thin and almost straight. Malar space 0.75 × basal width of mandible. Mandible with the upper tooth slightly longer than the lower tooth. Occipital carina mediodorsally complete and straight. Temple short, strongly narrowed behind eye.

Mesosoma ( Figs 2 c, d, h). Pronotum smooth, shining. Epomia present. Mesoscutum with short, dense, white setae, notauli present, strongly impressed on the anterior 0.45 of mesoscutum. Scutellum strongly swollen, smooth, with setae as on mesoscutum and lateral carinae absent. Mesopleuron smooth, shiny, impunctate, with sparser setae than that on mesoscutum, epicnemial carina present on lower 0.8. Metapleuron smooth, shining, with isolated punctures and hairs on the upper half. Propodeum with area apicalis delimited only laterally at apex, smooth, very sparsely punctate on anterior 0.4, weakly transversely wrinkled from anterior 0.5–0.7, and weakly granulate apically. Pleural areas with dense long white setae, anterior part with sparser and shorter setae and pleural carina distinct on anterior 0.55. Propodeal spiracle round. Legs slender, hind femur about 4.3 × as long as wide and as long as hind tibia, and third tarsomere 0.95 × as long as the fifth.

Wings ( Fig. 2 e). Fore wing with vein 3 rs-m absent. Hind wing with vein Cu 1 absent, vein cu-a not intercepted.

Metasoma ( Fig. 2 f). Tergites 1–5 closely punctate except for transverse smooth bands apically and concave area at base of the first tergite. Tergite 6 punctate basally, the rest of the metasoma smooth and almost impunctate. First tergite about 1.25 × as long as its apical width, dorsolateral carina complete, dorsal median carina extending to declivity. Second tergite about 1.1 × as long as its apical width, basal and apical oblique grooves deep with rhombic area weakly convex. Tergites 3–6 with two anterolateral swellings. Ovipositor upcurved, 1.15 × the length of the hind tibia ( Fig. 2 g). Tip of lower valves with oblique ridges.

Colour. Body generally brownish-black. Antenna yellowish. Face brownish centrally, black below antennal sockets. The following body parts marked with yellow: inner orbits of eyes widely, clypeus, mandible on basal 0.55, malar space, propleuron above fore coxae, upper and lower margin of pronotum, subtegular ridge, tegula, two anterolateral and central spots on mesoscutum, scutellum laterally, metascutellum, mesopleuron above mid coxae. Mesoscutum and mesopleuron red (except behind subtegular ridge). Legs generally yellow, but hind femur slightly darker basally and apically, hind tibia with apical and subbasal brownish bands, and hind tarsomeres apically banded with brownish. Pterostigma brownish. Metasomal tergites 2–7 subapically and laterally yellow. Ovipositor reddish with its sheaths black.

Variation. Antenna with 22–24 flagellomeres. Mesopleuron from smooth and almost impunctate to very sparsely punctate on lower part. Metapleuron from smooth and almost impuncate to sparsely punctate. Propodeum weakly transversely wrinkled from anterior 0.1–0.7, granulation and punctation varies from almost absent to relatively abundant, but is always weak. Subbasal brownish band of hind tibia sometimes extending to the base of tibia, so hind tibia appears widely fuscous basally. First tergite 1.1–1.25 × as long as its apical width. Second tergite approximately 1.0–1.1 × as long as its apical width. Ovipositor 1–1.2 × the length of the hind tibia. Red coloration of mesosoma variable, but at least mesopleuron and mesoscutum always partly red. Second metasomal tergite in one specimen entirely black.

Male. Unknown.

Distribution. Currently known from China ( Formosa) and Thailand (Huai Nam Dang and Nan Doi Phu Kha National Parks) ( Fig. 4 ).

Ecological note. Thai specimens were collected in an evergreen forest at an approximate altitude of between 1330 and 1600 m.

Figures

FIGURE 2. Clistopyga latifrontalis, 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) dorsal view of metasoma; g) lateral view of ovipositor; 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.