Habrandrothrips phuketanus, Okajima & Masumoto, 2025

Habrandrothrips phuketanus sp. nov.

( Figs. 6, 11–17 View FIGURES 6–17 )

Female (macroptera). Distended body length: about 1.4mm. Body bicolored dark brown and yellow ( Fig. 6 View FIGURES 6–17 ); head, thorax and tube dark brown, tube a little paler than head, with base somewhat yellowish; abdominal segments I–IX largely yellow. Fore femora dark brown, with apical one-third yellowish, mid femora brown, with apices somewhat paler; hind femora yellow; all tibiae and tarsi yellow. Antennal segments I–III largely yellow, segment I and II scarcely tinged with brown; segment IV pale brown, with basal half yellowish; segments V–VIII brown to dark brown, gradually darkened distally, segment V with basal quarter yellowish. Distal three-fifths of fore wing shaded with brown, basal two-fifths pale. Major body setae pale. Head ( Fig. 11 View FIGURES 6–17 ) a little longer than wide, 1.11 times as long as wide, widest across cheeks; dorsal surface almost smooth at middle, sculptured with transverse striae laterally. Cheeks weakly rounded, weakly serrated. Eyes normal, 0.35 times as long as head. Posterior pair of ocelli slightly separated from eyes, 24µm apart from each other. Postocular setae much shorter than eyes, expanded; 94µm apart from each other, about 11–12µm apart from eyes. Antennae ( Fig. 17 View FIGURES 6–17 ) about 1.8 times as long as head; segment VIII shorter than 0.6 times as long as segment VII; segments III shorter than IV, segment VII a little longer than IV; segments III and IV with two (1+1) and four (2+2 +1) sense cones respectively. Maxillary bridge about 0.3 times as wide as head. Pronotum 0.72 times as long as head, 1.59 times as wide as long, almost smooth; prothoracic aa shorter than am. Prospinasternum transversely oblong, 48µm wide; ferna far apart from each other; mesopresternum reduced medially, scarcely divided ( Fig. 14 View FIGURES 6–17 ). Mesonotal lateral setae expanded, 16–17µm long. Metanotum ( Fig. 13 View FIGURES 6–17 ) sculptured with polygonal reticulation; median pair of setae pointed, shorter than 20µm, distance between both median setae wider than distance between that seta and anterior margin of metanotum, 42µm apart from each other, 29–30µm apart from anterior margin. Fore wing with 2–3 duplicated cilia; three sub-basal setae rather short, subequal in length, expanded. Pelta weak, hat-shaped, 1.46 times as wide as long. Tergites III–VIII S2 setae: III–VI and VIII expanded, VII sharply pointed, but much shorter than S2 on IX, 55µm long. Tergite IX S1 setae very weakly expanded, shorter than tube, S2 finely pointed, longer than tube; intermediate setae almost half of Sl. Tube ( Fig. 16 View FIGURES 6–17 ) about 0.5 times as long as head, 1.56 times as long as wide; terminal setae 1.5–1.6 times as long as tube.

Measurements (holotype female in µm). Body length 1380 (distended). Head length 148, from anterior margin of eyes 136, width across eyes 130, maximum width across cheeks 133, minimum width across base 110; eyes length 52; diameter of posterior ocelli 10–12; postocular setae?20. Maxillary bridge width 40. Antenna total length 265, segments III–VIII length (width) as follows: 33 (22), 38 (26), 34 (23), 37 (21), 40 (18), 23 (13). Pronotum length 107, width 170. Setae on prothorax: am 15–17, aa less than 10, ml 12, pa 22–23, epim?20. Fore wing length 480. Sub-basal wing setae: S1 20, S2 20 –22, S3 17 –20. Pelta length 48, width 70. Tergite IX setae: S1 52 –53, S2 88. Tube length 75, maximum width 48; terminal setae 110–120.

Male. Unknown.

Type material. Holotype: macropterous female, Thailand, Phuket, nr. Tone Sai Waterfall , on dead leaves and branches, 14.ix.1992, TN & SO.

Comments. This species is described from Phuket, southern Thailand, based on a unique macropterous female taken from dead leafy branches, and is closely related to H. sulawesianus sp. nov., described below from Sulawesi, Indonesia. These two species are easily distinguished by the sense cone formula as the key above.