Ischnojoppa luteator (Fabricius, 1798)

Material. [Japan] Okinawa Pref.: Kuroshima Isl., Hori, Taketomi, 1 ♂ 22. IV. 2004, H. Suda leg. (coll. Riedel); Kuroshima Isl., Iko, Taketomi, 1 ♂ 22. IV. 2004, H. Suda leg. (Kanagawa); Ishigakijima Isl., Ishigaki City, Ohhama, 1 ♂ 11. XI. 2004, H. Suda leg. (Kanagawa); Ishigakijima Isl., Mt. Banna-dake, 1 ♀ 29. III. 2010, H. Sawada leg. (Kanagawa); Ishigakijima Isl., Ishigaki City, Tozato, 26 m alt., 1 ♀ 20. III. 2012, M. Ito leg. (Kanagawa); Iriomotejima Isl., Komi, 1 ♂ 11. VIII. 1972, T . Nambu leg. (Kanagawa).

Description. Male. Body length 16.5 mm. Flagellum with 42 flagellomeres, bristle-shaped; 1 st flagellomere 3.3× as long as wide. OED 2.1× ocellar diameter. MI 2.3. Hind femur 4.5× as long as wide. 2 nd tergite 1.6× as long as wide. Gastrocoelus triangularly impressed. Thyridium oblique, 0.7× as wide as interval between thyridia.

Color. Yellowish. Scape mainly yellowish; flagellum black, reddish ventrally. Ocular area black. 6 th and 7 th tergites black, 7 th tergite with dorsal ivory spot. Legs yellowish; hind femur in apical 0.2 and hind tibia in basal 0.1 and apical 0.3 black; hind metatarsus black in apical 0.2, 2 nd hind tarsomere black in apical half; 3 rd to 5 th hind tarsomeres black. Pterostigma yellowish.

Distribution. Japan (Ishigakijima Isl., Kuroshima Isl. and Iriomotejima Isl.). Widespread in the Oriental region.