Neandrothrips tonesai, Okajima & Masumoto, 2025

Neandrothrips tonesai sp. nov.

( Figs 298 View FIGURES 297–306 , 315–322 View FIGURES 315–322 )

Female (macroptera). Distended body length: 1.6mm. Body brown ( Fig. 298 View FIGURES 297–306 ). All femora brown, with apices paler; all tibiae yellowish, scarcely tinged with pale brown; tarsi yellow. Antenna brown, segment III somewhat paler, with base yellowish. Fore wing scarcely shaded with brown, but basal 1/3 and extreme apex pale. Major body setae pale. Head ( Fig. 315 View FIGURES 315–322 ) much longer than wide, 1.36 times as long as wide, widest across cheeks just behind eyes; dorsal surface almost smooth, weakly sculptured laterally and posteriorly. Cheeks rather straight, gradually constricted to base, anterior end overlapping with eyes, weakly serrated. Eyes about 0.3 times as long as head. Ocelli normal; posterior pair scarcely separated from eyes, 27µm apart from each other. Postocular setae shorter than eyes, expanded; 95µm apart from each other, 6–8µm apart from eyes. Antennae ( Fig. 322 View FIGURES 315–322 ) about 1.6 times as long as head; segment VIII relatively slender, weakly constricted at base, narrowly joined to VII, about 0.7 times as long as VII; segment III a little longer than segment VII; segment IV a little longer than III, the largest; segments III and IV with three (1+2) and four (2+2 +1) sense cones respectively. Maxillary stylets scarcely reaching eyes, sub-parallel at base, each stylet about 1/4 of head width apart; maxillary bridge distinct, about 0.3 times as wide as head. Pronotum ( Fig. 315 View FIGURES 315–322 ) 0.62 times as long as head, 1.41 times as wide as long; almost smooth; five pairs of prothoracic setae developed, expanded, am longer than aa, almost as long as ml; epim a little longer than pa, longer than postocular setae. Prospinasternum ( Fig. 316 View FIGURES 315–322 ) fan-shaped, 32µm wide; mesopresternum divided into two lateral triangle plates. Mesonotal lateral setae developed, expanded, 22µm in length. Metanotum ( Fig. 317 View FIGURES 315–322 ) sculptured medially with reticulation; median pair of setae finely pointed, about 30µm, their distance wider than the distance between that seta and anterior margin of metanotum, 42µm apart from each other, 32µm apart from anterior margin. Fore tarsal tooth small ( Fig. 319 View FIGURES 315–322 ). Fore wing with 4–6 duplicated cilia; three sub-basal setae expanded, S3 a little longer than S2. Pelta ( Fig. 318 View FIGURES 315–322 ) trapezoid with irregular lateral margins, sculptured distinctly, 1.37 times as wide as long. Tergites III–VIII S2 setae: III–VI expanded, VII sharply pointed, VIII bluntly pointed. Tergite IX S1 and S2 setae pointed, longer than tube, S2 longer than S1; intermediate setae a little shorter than 1/2 of S1. Tube ( Fig. 321 View FIGURES 315–322 ) about 0.45 times as long as head, 1.67 times as long as wide; terminal setae about 2.0 times as long as tube.

Measurements (holotype female in µm). Body length about 1600 (distended). Head length 178, from anterior margin of eyes 162, width across eyes 123, maximum width across cheeks 131, minimum width across base 105; eyes length 55; diameter of posterior ocelli 11–15; postocular setae 32–33. Maxillary bridge width 38. Antenna total length 285, segments III–VIII length (width) as follows: 37 (23), 40 (25), 39 (22), 37 (18), 35 (18), 25 (9). Pronotum length 111, width 156. Setae on prothorax: am 27–28, aa?20, ml 25–27, pa 35–37, epim about 40. Fore wing length 570. Sub-basal wing setae: S1 25 –27, S2 30, S3 30 –35. Pelta length 57, width 78. Tergite IX setae: S1 90–97, S2 117–119. Tube length 80, maximum width 48; terminal setae 162–165.

Male (macroptera). Distended body length: 1.3mm. Very similar to macropterous female in color and structure. Head about 1.3 times as long as wide; pronotum about 0.7 times as long as head, 1.34 times as wide as long; fore legs rather enlarged ( Fig. 320 View FIGURES 315–322 ), fore tarsal tooth stout; fore wing with 5–5 duplicated cilia; S2 setae on tergite VIII blunt.

Measurements (paratype male in µm). Body length about 1300 (distended). Head length 153, from anterior margin of eyes 138, width across eyes 115, maximum width across cheeks 118, minimum width across base 92; eyes length 50; diameter of posterior ocelli 8–11; postocular setae about 30. Maxillary bridge width 42. Antenna total length 260, segments III–VIII length as follows: 37, 38, 35, 32, 33, 22. Pronotum length 107, width 143. Setae on prothorax: am 22–25, aa?20, ml 25–28, pa 33–34, epim 35–40. Fore wing length 510. Sub-basal wing setae: S1 27 –28, S2 27 –28, S3 31 –33. Pelta length 49, width 60. Tergite IX setae: S1 65, S2 25. Tube length 70, maximum width 41; terminal setae 150.

Type material. Holotype: macropterous female, Thailand, Phuket, nr. Tone Sai Waterfall , on dead leaves and branches, 12.ix.1992, TN & SO . Paratype: Thailand, Phuket, 1 male, data very similar to holotype, but 11.ix.1992 .

Doubtful specimen. Peninsular Malaysia, 1 female, Pahang, Endau-Rompin Park , figging, 8.vii.2003, H. Kojima .

Comments. This species is included in the bamboosae -group and may be related to N. agkoae sp. nov. from the Philippines, the differences between them being discussed under agkoae . N. simulans sp. nov. from Thailand and Peninsular Malaysia may also be related, but these two species have different a sense cone formula as discussed under simulans . A female listed as doubtful specimen is very similar to this species, but it could not be confirmed the sense cone number of the antennal segment III.