Amomothrips associatus (Priesner, 1938) (Figs 1–12)

Taeniothrips associatus Priesner, 1938: 483.

Description. Female macroptera. Body dark brown, all legs brown except apical of tibia and tarsi yellow (Fig. 1); antenna segments I–II dark brown, III brown with apex light brown, segments IV–VIII brown (Fig. 9); fore wing brown including clavus (Figs 1, 8).

Head longer than wide, sculpture distinctly close striate behind eyes and cheeks slightly constricted; 4 pairs of long ocellar setae, ocellar setae III situated near the anterior margin of post ocelli; postocular setae almost arranged in a row around compound eyes (Fig. 6). Antenna 8-segmented, segment I without dorso-apical setae, segments III & IV with long and forked sensoria, III with pedicel (Fig. 9).

Pronotum wider than long, sculptured with close transverse striations; four pairs of posteromaginal setae; inner posteroangular setae shorter than outer pair (Fig. 4). Mesonotum with transverse striations; anteromedian CPS absent; median pair of setae arising in front of posterior margin (Fig. 4). Metanotum anterior with transverse striate, posterior half with irregular reticulate striations, and with irregular longitudinal striations sculptured laterally, CPS present; median pair of setae arising at anterior margin (Fig. 4). Mesofurca with spinula, metafurca without spinula. Fore wing first vein with 8+1+2 setae or 9+2 setae (sometimes with median setae close to basal setae); second vein with 10–11setae; posteromarginal fringe cilia wavy; scale with 5 marginal setae and one discal seta, apical longer than subapical (Fig. 8).

Abdominal tergites sculptured with irregular transverse striations (Fig. 12); tergite II with 3 lateral marginal setae; tergites VI–VIII without ctenidia; tergite VIII with a patch of microtrichia anterior to the spiracle, posteromarginal comb long and complete; IX with two pairs of CPS; tergite X short, median longitudinal split not complete (Fig. 10). Both tergites and sternites without craspedum; pleurotergites and sternites without discal setae; sternite IIwith two pairs of posteromarginal setae; sternites III–VII with three pairs of posteromarginal setae; S1 and S2 setae on sternite VII situated in front of posterior margin (Fig. 5).

Male macroptera. Body similar to but smaller than female (Fig. 2). Antennal segment I brown, apical half of segment II, III and IV and the basal of V pale, apex of V and VI–VIII slightly shaded (Fig.7); fore wing brown including clavus, with basal slightly paler (Fig. 2). Abdominal tergite VIII with posteromarginal comb complete; sternites III–VII each with a wide transverse pore plate (Fig. 3).

Material examined. 4♀ 2♂, China, Yunnan, Xishuangbanna Tropical Flower Garden, from Alpinia zerumbet, 30 September 2011, leg. Xie Yonghui & Sun Jun, deposited in YAU; 1♀, deposited in ANIC.

Distribution. China (Yunnan), Indonesia (Sumatra).

Remarks. According to the key of Masumoto (2010), it runs to the genus Florithrips, with four pairs of anteocellar setae present, while it can be distinguished with Florithrips by antenna segments III and IV with long sense cones; pronotum very strongly sculptured; the setae on sternite VII arising in front of the margin; tergite X without a longitudinal split and the tergites laterally with microtrichia on the sculpture lines.

Funding The study was supported by the National Natural Science Foundation of China (31460574), Personnel Training Program of Academic and Technical Leaders of Yunnan Province (2015HB036), Yunnan Agricultural University Innovation Foundation for Postgraduate(2016ykc15).

Acknowledgements Thanks to Dr. Laurence Mound, from The Commonwealth Scientific and Industrial Research Organisation, Australia, for his help and advice.