Pandanothrips ryukyuensis, Masumoto, Masami, Ng, Y. F. & Okajima, Shûji, 2013

Masumoto, Masami, Ng, Y. F. & Okajima, Shûji, 2013, A new genus of Thripinae (Thysanoptera, Thripidae) collected from Pandanus in Japan, Malaysia and Australia, with three new species, Zootaxa 3709 (6), pp. 543-554 : 547-550

Pandanothrips ryukyuensis sp. n.

( Figs 13–22 )

Female macroptera ( Fig. 13 ). Distended body length 1.3–1.5 mm. Body uniformly brown; fore wing ( Fig. 19 ) brown with subbasal area pale, clavus brown with apex pale; all femora brown, fore tibiae yellow, mid and hind tibiae brown with apices yellowish, all tarsi yellow; antennal segments I–II brown, III–V yellow, VI–VIII pale brown ( Fig. 16 ); prominent body setae slightly shaded or yellowish brown. Head ( Fig. 15 ) 0.7–0.8 times as long as wide, rounded at cheeks, smooth at middle between fore ocellus and tangent of posterior margin of compound eyes, sculptured with transverse anastomosing striae behind postocular setal row, slightly rugose on pre-ocellar area.

Ocellar setae II lateral to or posterolateral to setae III, setae III slightly shorter than distance between hind ocelli. Antennal segment II without microtrichia, III–VI tapering to apex but without neck, III–VI pedicelate, sensoria on III and IV elongate and reaching near middle of each succeeding segment, VI the longest. Antennal segments I– VIII ratio length/width as follows: 0.8–0.9, 1.1–1.2, 1.9, 2.4–2.6, 2.0–2.5, 3.2–3.3, 1.6, 3.0–4.0. Pronotum ( Fig. 15 ) 0.7–0.8 times as long as wide, sculptured with transverse anastomosing striae, with 17–21 discal setae; posteroangular setae I 0.3–0.4 times as long as pronotal median length and usually much longer than setae II. Mesonotum ( Fig. 17 ) sculptured with slightly narrowly spaced anastomosing striae; anteromedian CPS present (in holotype only one CPS present). Metascutum irregularly reticulate or sculptured with longitudinal anastomosing striae; median pair of setae close to or at anterior margin, 0.3–0.4 times as long as metascutal median length; CPS absent. Prosternal basantra with pair of setae ( Fig. 18 ). Fore wing costal vein with 19–25 setae, first vein with 12– 15 setae; clavus usually with five (rarely six or four) veinal setae. Abdominal tergites ( Fig. 20 ) smooth medially, laterally with sculpture not reaching to median CPS on II–VII, with weak microtrichia along sculpture, median pair of setae very small and not situated between median CPS on III–VI; tergite II with three lateral marginal setae, setae II close to lateral margin and much longer than median setae; tergite VI–VIII with S4 setae reduced to small; tergite VIII with posteromarginal comb usually complete, but microtrichia often vestigial or small medially; tergite IX with both anterior and posterior pair of CPS; sternites without discal setae.

Measurements of holotype female. Distended body length 1530. Head length 118, width across cheeks 150; compound eye dorsal length 83, width 48. Ocellar setae III length 34–35, interval 35. Pronotum median length 130, width 188; posteroangular setae I 40 –41, setae II 40 –44. Metascutal median length 68, median setae 21–24. Fore wing length 550, width at middle 50. Ovipositor length 230. Antennal segments I–VIII length (width) as follows: 25 (30), 28 (28), 38 (20), 45 (18), 38 (18), 50 (15), 10 (6), 15 (13). Sensoria length on antennal segments III and VI 33 –38 and 33–35.

Male macroptera ( Fig. 14 ). Distended body length about 1.1mm. Body largely yellow but head brown, abdominal tergites IV–VII brown at median half, tergite III shaded at middle; antennal segments II–V and base of VI yellow, I and distal area of VI–VIII pale brown; fore wing brown with subbasal half and extreme apex pale; all legs yellow. Pronotal posteroangular setae I much longer than setae II. Abdominal tergite VIII with posteromarginal comb complete but often reduced to small medially; sternites III–VII each with oblong pore plates ( Fig. 22 ), 48–50 microns wide.

Measurements of paratype male. Distended body length 1100. Head length 105, width across cheeks 130; compound eye dorsal length 73, width 48. Ocellar setae III length 34–35, interval 35. Pronotum median length 113, width 165; posteroangular setae I 37 –44, setae II 29–32. Metascutal median length 60, median setae 16–18. Fore wing length 430, width at middle 35. Antennal segments I–VIII length (width) as follows: 23 (28), 28 (25), 35 (19), 35 (18), 33 (15), 43 (15), 8 (6), 15 (5). Sensoria length on antennal segments III and VI 18 and 23.

Type series. JAPAN. Holotype female, Okinawa-hontou Is., Naha City, Ashimine, on flower of Pandanus boninensis , 23.ix.2011, T. Ikeshiro & Y. Tsuyoshi. Paratypes: 5 females, 2 males collected together with holotype. Okinawa-hontou Is., Naha City, Kagamizu, 11 females on flower & young fruit of P. boninensis , 16.vi.2011, K. Sotokawachi & Y. Tsuyoshi; 10 females on flower of P. boninensis , 30.v.2012, T. Ikeshiro & Y. Tsuyoshi. The holotype and most paratypes are deposited in TUA.

Figures

FIGURES 13 – 14. Pandanothrips ryukyuensis. (13) Female; (14) Male.

FIGURES 15 – 18. Pandanothrips ryukyuensis. Female. (15) Head & pronotum; (16) Antenna; (17) Mesonotum & metascutum; (18) Pro-, meso- and metasterna.

FIGURES 19 – 22. Pandanothrips ryukyuensis. Female 19 – 20: (19) Fore wing; (20) Tergites VII – XI. Male 21 – 22: (21) Tergites VIII – X; (2) Sternites VI – VII.