Thrips typicus, Masumoto & Okajima, 2013

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 : 55-56

Thrips typicus sp. n.

( Figs. 245–252 )

Female macroptera. Distended body length 1.2–1.4 mm. Body generally brown, head and pronotum pale brown, often paler than pterothorax, pterothorax pale brown, often pale partly, abdomen brown, always darker than head and thorax; antennal segment I pale or shaded, usually paler than II, II pale brown, III brownish yellow with distal third slightly shaded, paler than II, IV brown with base slightly pale, V to VII brown, darker than IV; fore wings uniformly slightly shaded; all legs brownish yellow; prominent body setae dark brown. Head ( Fig. 245 ) 0.6–0.8 times as long as wide, sculptured with transverse anastomosing striae dorsally, weakly sculptured within ocellar triangle, cheeks rounded. Ocellar setae III at margin of ocellar triangle and slightly longer than longitudinal diameter of hind ocelli. Postocular setae I slightly longer than remaining setae and subequal length to ocellar setae III, II and IV very small. Antennae ( Fig. 246 ) 7-segmented, II with microtrichial rows; III the longest, III to VI gently rounded at each side, without apical neck, IV to V pedicelate, VI widest at middle or distal third and gently tapering, with 10 setae. Antennal segments I to VII length/width ratio as follows: 1.0, 1.2–1.4, 2.2–2.5, 2.1–2.2, 1.7–1.9, 2.4–2.6, 1.8–2.0. Pronotum ( Fig. 245 ) 0.7–0.8 times as long as wide, distinctly sculptured with transverse anastomosing striae, with 23–28 discal setae; anterior margin without long setae; posteroangular setae 2 pairs, setae I 0.4–0.6 times as long as pronotal median length and longer than setae II; posteromarginal setae 3 pairs, setae I the longest. Mesonotum sculptured with transverse anastomosing striae, but smooth anteromedially; CPS present anteromedially. Metascutum ( Fig. 247 ) sculptured with longitudinal anastomosing striae except anteromedially, interval between subequal to diameter of CPS medially; median pair of setae behind anterior margin, 0.5–0.6 times as long as metascutal median length; CPS present. Fore wing costal vein with 21–26 setae, first vein with long gap in setal row, seven basal and three distal setae, second vein with 10–12 setae. Abdominal tergites II to VIII ( Figs. 248, 249 ) with a few lines slightly extending to mesad of S1 setae; tergite II with 3 lateral marginal setae; tergite VIII with posteromarginal comb complete, microtrichia long and fine; tergite IX with both anterior and posterior pair of CPS, S1, S2, S3 and MD setae each 1.1–1.5, 1.3–1.8, 1.5–2.0 and 0.5–0.8 times as long as median length of the tergite; tergite X with S1 and S2 setae each 1.3–1.7 and 1.5–1.7 times as long as median length of the tergite; sternite I with two microsetae anteromedially; sternite II with two pairs of posteromarginal setae; sternite VII with S1 setae far from posterior margin; pleurotergites with one to two discal setae, with small dentate microtrichia along lines of sculpture. Ovipositor 1.7–1.8 times as long as pronotal median length.

Measurements of holotype female. Distended body length 1360. Head length 95, width across cheeks 135; compound eye dorsal length 58, width 40. Pronotal median length 118, width 160; posteroangular setae I length 56–61, setae II length 50–53, posteromarginal setae I length 25–26. Metascutal median length 68, median setae length 34–35. Fore wing length 680, width at middle 45. Abdominal tergite IX median length 50; S1 setae length 73–75, S2 setae length 85–90, S3 setae length 93–100, MD setae length 39; tergite X length 53, S1 setae length 85– 92, S2 setae length 90. Ovipositor length 210. Antennal segments I to VII length/width as follows: 25 (26), 34 (26), 46 (19), 44 (20), 33 (18), 45 (19), 15 (8).

Male macroptera. Body length 0.9–1.0 mm. Body uniformly yellowish white; antennal segments I to II pale, III brownish yellow, IV brownish yellow with apex darker, V to VII pale brown. Antennal segment VI ( Fig. 250 ) with about 20 setae. Abdominal tergite VIII ( Fig. 251 ) with a few microtrichia at middle of posterior margin; tergite IX with S1 setae at or slightly ahead of level of S2 setae, subequal in length to or slightly longer than S2 setae, distance of their bases variable; sternites without discal setae; sternites III to VII ( Fig. 252 ) each with an oblong pore plate, 15–38 microns wide.

Measurements of paratype males. Distended body length 900–980. Head length 67–73, width across cheeks 108–118; compound eye dorsal length 43, width 35–38. Pronotal median length 85–100, width 120–138; posteroangular setae I length 41–50, setae II length 23–38, posteromarginal setae I length 15–21. Metascutal median length 53–58, median setae length 21–28. Fore wing length 470–580, width at middle 40. Antennal segments I to VII length (width) as follows: 20–25 (23–25), 28–30 (23), 35–45 (18), 38–45 (18), 28–33 (16–18), 48–55 (18–19), 13–14 (8).

Type series. Holotype female, Japan, Honshu, Nagano Pref., Norikura-kougen , on Asteraceae flowers, 21- viii-2006, M. Masumoto.

Paratypes. Honshu: 26 females & 8 males, same data as the holotype. 1 female & 2 males, same locality and date as the holotype, Cirsium sp. [ Asteraceae ], 21-viii-2006, M. Masumoto. 3 females & 1 male, same locality and date as the holotype, on Apiaceae flowers, M. Masumoto. Nagano Pref., Shiga-kougen (alt. about 1700m): 2 females on leaves of Salix sp. [ Salicaceae ], 31-vii-2007, M. Masumoto. 1 female on leaves of Polygonum sp. [ Polygonaceae ], 31-vii-2007, M. Masumoto. Fukushima Pref., Minamiaizu-gun, Hinoemata (alt. about 1000m): 2 females & 1 male on Miscanthus sinensi s, 17-viii-1999, M. Masumoto. 1 female on flowers of Lespedeza sp. [ Fabaceae ], 21-ix-2000, M. Masumoto. Fukushima Pref., Kitashiobara-mura, nr. Oguni-numa, 1 female on white flowers, 20-viii-2003, M. Masumoto. Yamanashi Pref., Sutama-cho, Tokusa-toge (alt. about 1400m), 3 females on flowers of Senecio cannabifolius [ Asteraceae ], 1-ix-2006, M. Masumoto. The holotype and most paratypes are deposited at TUA.

Biology. This species occurs on many kinds of the plants in mountain areas of Japan.

Comments. This species is very similar to the European species T. fulvipes Bagnall. However , in T. fulvipes , antennal segments are slender and longer, segments III and IV distinctly tapering at apex, VI slender at distal half, V to VII each more than 40, 55, 18 microns long; pronotal posteroangular setae are longer, I and II each more than 74 microns long; setae on abdominal tergite IX are longer, S1, S2 and S3 each more than 118, 129 and 120 microns long; setae on tergite X are longer, S1 and S2 setae each more than 120 and 100 microns long; male antennal segment VI is distinctly longer than remaining segments.

Etymology. In reference to this species having typical Thrips species structures.

Figures

FIGURES 239–252. Thrips species. T. trehernei, female 239–242: (239) Head & pronotum; (240) Antenna, right; (241) Metascutum; (242) Tergites VIII–X. T. trehernei, male 243–244: (243) Tergites VIII–IX; (244) Sternite VI. T. typicus sp. n., female 245–249: (245) Head & pronotum; (246) Antenna, right; (247) Metascutum; (248) Tergite V & pleurotergite, right side; (249) Tergites VIII–X. T. typicus sp. n., male 250–252: (250) Antennal segment VI; (251) Tergites VIII–IX, sculpture omitted; (252) Sternite V, sculpture omitted.