Stenchaetothrips minutus (van Deventer)

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 : 13-15

Stenchaetothrips minutus (van Deventer)

( Figs. 27–31 )

Thrips minuta van Deventer, 1906: 281 .

Female macroptera. Body pale brown to brown, head to thorax often barely paler than abdomen; antennal segment I shaded, II shaded with distal half yellow, III to IV yellow, V yellow with distal third slightly shaded, VI shaded with basal half pale, VII shaded; fore wings pale brown with basal fifth pale; all legs yellow. Head ( Fig. 27 ) rounded at cheeks. Ocellar setae III situated at margin of ocellar triangle. Postocular setae III the longest, II and IV smaller than remaining setae, III and V slightly behind setal row. Antennal segment ( Fig. 28 ) II with some microtrichial rows on dorsal surface, VI the longest. Pronotum ( Fig. 27 ) weakly sculptured with wide spaced transverse striae, with about 30 discal setae; posteroangular setae I almost as long as setae II and 0.5 times as long as pronotal median length; posteromarginal setae I the longest. Mesonotum without CPS anteromedially. Metascutum ( Fig. 29 ) with CPS. Fore wing first vein with seven basal and three distal setae, Mesothoracic endofurca with spinula very weak. Abdominal tergites VI and VII ( Fig. 30 ) with very small teeth at each side; tergite VIII ( Fig. 31 ) with posteromarginal comb complete; tergite IX with both anterior and posterior pairs of CPS; sternites without discal setae; sternite I without microsetae anteromedially.

Male. Unknown in Japan.

Specimens examined. JAPAN, Ryukyus : Okinawa-hontou Is., 3 females ( TUA); Ishigaki-jima Is., 2 females ( FU) . TAIWAN, Chiai-hsien , Kuantzulin, 4 females on grass, 1.iv.1993, T . Nonaka & S. Okajima ( TUA) .

Distribution. Japan (Ryukyus), Taiwan, Indonesia, India, Hawaii, Brazil.

Comments. This species appears to be very similar to S. mucunae as discussed below.

Figures

FIGURES 27–37. Stenchaetothrips species. S. minutus, female 27–31: (27) Head & pronotum; (28) Antenna, right; (29) Metascutum; (30) Tergite VI, left side; (31) Tergites VIII–X. S. mucunae, holotype female 32–35: (32) Head & pronotum, sculpture omitted; (33) Antennal segments II–VII, left, microtrichia, setae and sensoria omitted; (34) Metascutum; (35) Tergite V, left side, sculpture omitted. S. mucunae, “allotype” male 36–37: (36) Tergite VI, left side, sculpture omitted; (37) Sternite VII, sculpture omitted.