Ichneumon spec. 1

Ichneumon spec. 1

Material. [ Japan] Kagoshima Pref.: Yakushima Isl. , Malaise trap ( AC2 ), 150 m alt., 1 ♂ 28. VI. – 29. VII. 2007, leg. T. Yamauchi et al . ( Kanagawa).

Description. Male. Body length 16.0 mm.

Structure. Flagellum with 39 flagellomeres, bristle-shaped; 1 st flagellomere 2.4× as long as wide, distal flagellomeres ± nodose. Tyloids on flagellomeres 6–14, linear, maximally 0.8× as long as their flagellomeres. Temple distinctly and roundly narrowed behind eye. OED 1.1× ocellar diameter. MI 0.4. Scutellum moderately elevated, wider than long, without lateral carina. Area superomedia almost square; costula absent. Postpetiole moderately widened, lateral field 0.4× as wide as median field, the latter field elevated and with coarse longitudinal striae. Gastrocoelus strongly impressed, with distinct ridges. Thyridium oblique, 0.7× as wide as interval between thyridia. 2 nd tergite 1.2× as long as wide, densely rugose-punctate, striate between thyridia.

Color . Black. Flagellum black, reddish-brown ventrally. Palps, mandible except teeth, clypeus, face and stripe of frontal orbit, scape ventrally, hind edge of pronotum and scutellum ivory. Tergites black; 2 nd tergite reddish-yellow in apical half, 3 rd tergite reddish yellow in apical 2/3. Legs black; fore and mid femora apically and fore and mid tibiae and tarsi yellowish; hind tibia yellow, black in apical 0.5; hind tarsus reddish-yellow. Wings slightly infuscate, pterostigma reddish.

Remark. We are not able to correlate this male with one of the known Ichneumon species but do not formally describe this species here because we do not have the associated female in our material.