Karnyothrips acer Okajima

Karnyothrips acer Okajima View in CoL

Karnyothrips acer Okajima, 2006: 380–383 View in CoL .

This species was described from the temperate region of Japan, Honshu and the Izu Islands, based on several macropterous females and micropterous males collected mainly from the dead leafy branches. It is newly recorded here from Shikoku and Hokkaido, and may be widely distributed in the temperate region of Japan. It can be distinguished from the species with three sense cones on antennal segment III in having tergite IX median posteromarginal setae (= S1) long and pointed and almost as long as S 2 in female, and the prothoracic notopleural sutures incomplete. This species is somewhat intermediate between Karnyothrips View in CoL and Mesandrothrips View in CoL (in part) in having relatively short terminal tube setae, which are shorter than 1.5 times as long as tube.

Diagnosis. Dark brown species; femora brown with extreme apices yellowish, tibiae yellow, shaded with brown medially; antenna brown, segments III and IV with basal one-third yellowish, segment V with extreme base yellowish. Postocular setae situated relatively far from eyes. Antennal segment VIII slender, constricted basally; segments III and IV with three (1+2) and four (2+2 +1) sense cones respectively. Maxillary stylets wider apart, 2/5–1/2 of head width apart. Notopleural sutures incomplete; mesopresternum divided or narrowly boat shaped; prospinasternum small. Tergite IX S1 setae pointed, almost as long as S2, longer than tube. Tube a little longer than 0.6 times as long as head; terminal setae 1.3–1.4 times as long as tube.

Specimens-examined. Japan, holotype females and paratype females and males (see Okajima 2006, p. 381– 383); 2 females (mac.), Shikoku, Kochi-ken, Tosashimizu-shi , Ashizuri-misaki , on dead branches, 24.v.1996, SO ; 1 female (mac.), Hokkaido, Sapporo-shi, Atsubetsu-ku , Nopporo-Shinrin-Kouen, on dead branches, 24.vi.2006, TN .