Stenchaetothrips bambusicola Mound, 2011

Ng, Y. F. & Mound, L. A., 2015, Species of Thripinae (Thysanoptera) from bamboo in Malaysia, with one new species and six new records, Zootaxa 3918 (4), pp. 492-502 : 497-498

Stenchaetothrips bambusicola Mound, 2011

( Figs 22–25 )

Female macroptera. Body brown; legs pale; antennal segment I brown, II pale on apical half, III yellow, IV–VI slightly shaded in apical half, VII–VIII light brown; fore wing uniformly shaded, paler at fourth basal. Head about as long as wide; ocellar setae II much longer than setae III; post-ocular setae I and III, V and VI long, II and IV minute ( Fig. 22 ). Pronotum with 22–24 discal setae, with weak, widely spaced transverse striations; 2 pairs of long postero-angular setae, 3 pairs of postero-marginal setae ( Fig. 22 ). Mesonotum with anterior campaniform sensilla, median setae arising in middle. Metanotum with closely spaced striations, campaniform sensilla present, median setae arising behind anterior margin ( Fig. 23 ). Meso- and metafurca each without a spinula;

Abdominal tergites V–VIII with paired ctenidia; tergites I–VII posterior margin laterally with a few weakly dentate microtrichia, extending medially on tergite VII; tergite VIII with complete comb of slender microtrichia ( Fig. 25 ); submedian and median setae on VIII sub-equal and short, not extending beyond posterior margin; two pairs of campaniform sensilla on IX. Sternites smooth, posterior margins without dentate craspedum, with 3 pairs of posteromarginal setae; median posteromarginal setae on segment VII arising in front of posterior margin; V–VI with a small transverse pore plate medially ( Fig. 24 ).

Material studied. Malaysia, Terengganu, Kerteh, 1 female from Schizostachyum zollongeri (Poaceae) , 4.iii.2014 (Syarifah, Z.), in CISUKM.

Comments. Previously known only from northern Australia, near Darwin, this is the first record outside the continent of Australia ( Mound 2011). It can be identified by the presence in females of a small transverse pore plate on each of abdominal sternites V–VI. The body is uniformly brown and the metanotum bears a pair of campaniform sensilla. Mound (2011) described bambusicola based on samples from Bambusa arnhemica , and the species was compared with information given by Bhatti (1982) concerning two closely similar species, divisae and bambusae .

Figures

FIGURES 22 – 25. Stenchaetothrips bambusicola. (22) Head and pronotum; (23) Mesonotum and metanotum; (24) Abdominal sternites V – VII; (25) Abdominal tergites VI – XI.