Thrips orientalis (Bagnall)

Masumoto, Masami & Okajima, Shûji, 2013, Review of the genus <i> Thrips </ i> and related genera (Thysanoptera, Thripidae) from Japan, Zootaxa 3678 (1), pp. 1-65 : 44

Thrips orientalis (Bagnall)

( Figs. 171–178 )

Isoneurothrips orientalis Bagnall, 1915: 593 .

Female macroptera. Body uniformly dark brown, antecostal ridge dark; antennal segment III brownish yellow; fore wings including clavus almost uniformly brown. Head ( Fig. 171 ) weakly rounded at cheeks, weakly sculptured within ocellar triangle. Ocellar setae III on margin of ocellar triangle. Postocular setae I and III much shorter than ocellar setae III, II and IV minute. Antennae ( Fig. 172 ) 7-segmented. Pronotum ( Fig. 175 ) distinctly sculptured with transverse striae, with about 30 discal setae; posteroangular setae 2 pairs, setae I shorter than setae II; posteromarginal setae 2 or 3 pairs. Metascutum ( Fig. 173 ) with equiangular reticulations bearing small inner wrinkles; median pair of setae far from anterior margin; CPS absent. Fore wing first vein without long gap in setal row, 7–11 setae at distal half; clavus with subapical setae longer than apical setae. Abdominal tergites II to VIII ( Fig. 174, 175 ) with lines of sculpture almost not extending to mesad of S2 setae; tergites II to VII with S1 setae minute; tergite II with four lateral marginal setae, fourth setae often displaced onto pleurotergite; tergite VIII without posteromarginal comb medially, small microtrichia present only laterally; tergite IX with 2 pairs of CPS; sternite I with two minute microsetae anteromedially; sternites II with 0–2 discal setae; sternites III to VI ( Fig. 176 ) usually with two to seven discal setae; sternite VII with no discal setae and S1 setae far from posterior margin; pleurotergites without discal setae and ciliate microtrichia.

Male macroptera. Body colour similar to female. Antennal segment VI with slightly more setae on dorsal surface than in female. Abdominal tergite IX ( Fig. 177 ) with S1 setae at level of S2 setae and longer than S2 setae, closer to S2 setae than each other; sternites without discal setae; sternites III to VII ( Fig. 178 ) each with a large transverse pore plate; sternite IX with posteroangular setae stout.

Specimens examined. JAPAN, Ryukyus, Ishigaki-jima Is., 7 females & 33 males ( TUA) .

Distribution. Japan (Ryukyus), widespread in the Oriental Region, Australia, New Caledonia, Hawaii, Trinidad, Florida.

Biology. This species is found on many kinds of flowers.

Comments. Mound (2005) recognized this species and its related species as the orientalis -group.

Figures

FIGURES 166–178. Thrips species. T. ogasawarensis sp. n., female 166–168: (166) Metascutum; (167) Tergite VIII; (168) Sternite VII, sculpture omitted. T. ogasawarensis sp. n., male 169––170: (169) Tergites VIII–IX, sculpture omitted; (170) Sternite VII, sculpture omitted. T. orientalis, female 171–176: (171) Head & pronotum; (172) Antenna, right; (173) Metascutum; (174) Tergite IV & pleurotergite, left side; (175) Tergite VIII; (176) Sternites V–VII, sculpture omitted. T. orientalis, male 177–178: (177) Tergite IX and left side of segment X; (178) Sternite VI, sculpture omitted.