Neandrothrips kutae, Okajima & Masumoto, 2025

Neandrothrips kutae sp. nov.

( Figs 182 View FIGURES 177–186 , 211–218 View FIGURES 211–218 )

Female (macroptera). Distended body length: about 1.5–1.6mm. Body brown ( Fig. 182 View FIGURES 177–186 ). All femora brown, almost concolorous with head, with apices scarcely paler; all tibiae shaded with brown, with bases and apices paler; tarsi yellow. Antenna brown, segment III pale brown. Fore wing pale, scarcely shaded with brown. Major body setae pale. Head ( Fig. 211 View FIGURES 211–218 ) a little longer than wide, about 1.1 times as long as wide, 1.11 times in holotype, widest across cheeks; dorsal surface very weakly sculptured with transverse reticulation or striae (the sculptures are visible under the phase contrast illumination). Cheeks weakly rounded, weakly serrated. Eyes about one-third of head length. Ocelli normal; posterior pair slightly separated from eyes, 25µm apart from each other in holotype. Postocular setae shorter than eyes, expanded; 96µm apart from each other, about 8–9µm apart from eyes in holotype. Antennae ( Fig. 218 View FIGURES 211–218 ) 1.85 times as long as head; segment VIII weakly constricted at base, narrowly joined to segment VII, about 0.7 times as long as VII; segment III widely truncated at apex, almost as long as IV, longer than VII; segments III and IV with two (1+1) and four (2+2) sense cones respectively. Maxillary stylets retracted to postocular setae, narrowly V-shaped; maxillary bridge rather distinct, about 0.4 times as wide as head. Pronotum ( Fig. 211 View FIGURES 211–218 ) about 0.7 times as long as head, 0.68 times in holotype, 1.67 times as wide as long in holotype; almost smooth, but sculptured at near posterior margin; five pairs of prothoracic setae developed, expanded; pa and epim longer than postocular setae. Prospinasternum ( Fig. 212 View FIGURES 211–218 ) inverted triangle, about 25µm wide in holotype; mesopresternum complete. Mesonotal lateral setae well developed, expanded, more than 20µm long. Metanotum ( Fig. 213 View FIGURES 211–218 ) weakly sculptured with polygonal reticulation; median pair of setae pointed, longer than 20µm, distance between both median setae narrower than distance between that seta and anterior margin of metanotum, 33µm apart from each other, 38–40µm apart from anterior margin in holotype. Fore tarsus with a tooth ( Fig. 215 View FIGURES 211–218 ). Fore wing with 4 duplicated cilia; three sub-basal setae expanded, S3 the longest, much longer than S2. Pelta ( Fig. 214 View FIGURES 211–218 ) trapezoid with irregular lateral margins, 1.35 times as wide as long in holotype. Tergites III – VIII S2 setae: III – V expanded, VI variable in shape, pointed, blunt or very weakly expanded, at least not distinctly expanded, VII finely pointed, VIII pointed or bluntly pointed. Tergite IX S1 and S2 pointed, S1 almost as long as tube, or a little shorter, S2 longer than tube; intermediate setae short, shorter than half of Sl. Tube about 0.6 times as long as head, 0.61 times in holotype, about 2.0 times as long as wide; terminal setae about 1.7 times as long as tube .

Measurements (holotype female in µm). Body length 1580 (distended). Head length 146, from anterior margin of eyes 136, width across eyes 128, maximum width across cheeks 131, minimum width across base 113; eyes length 47; diameter of posterior ocelli 10–13; postocular setae 33–34. Maxillary bridge width 52. Antenna total length 270, segments III–VIII length (width) as follows:?35 (23), 40 (25), 38 (22), 37 (20), 33 (18), 24 (9). Pronotum length 99, width 165. Setae on prothorax: am 25–26, aa 25, ml 30–33, pa 37, epim 43. Fore wing length 570. Sub-basal wing setae: S1 33, S2 34 –36, S3 50 –54. Pelta length 55, width 74. Tergite IX setae: S1 83–87, S2 95–96. Tube length 89, maximum width 45; terminal setae 155.

Male (macroptera). Distended body length: 1.3–1.4mm. Very similar to macropterous female in color and structure, but shows allometric growth. Fore femora of large male unarmed ( Fig. 217 View FIGURES 211–218 ); fore wing with 4–5 duplicated cilia; S1 setae on abdominal tergite IX bluntly pointed, S2 relatively long, longer than 1/3 of S1.

Measurements (paratype small–large males in µm). Body length 1310–1410 (distended). Head length 141– 145, from anterior margin of eyes 132–133, width across eyes 120–121, maximum width across cheeks 125–128, minimum width across base 102–107; eyes length 48–52; diameter of posterior ocelli 10–12; postocular setae 30–37. Maxillary bridge width 52–53. Antenna total length 270–284, segments III–VIII length as follows: 34–37, 40–40, 38–39, 37–37, 33–34, 25–23. Pronotum length 97–108, width 153–169. Setae on prothorax: am 24–30, aa 23–32, ml 27–37, pa 34–42, epim 35–50. Fore wing length 530–575. Sub-basal wing setae: S1 25 –33, S2 28 –40, S3 42 –51. Pelta length 47–57, width 70–74. Tergite IX setae: S1 78–78, S2 30 –32. Tube length 80–89, maximum width 41–43; terminal setae 150–160.

Type material. Holotype: macropterous female, Indonesia, Bali, Kuta (sea level), on dead leaves and branches, 21.vii.1984, SO . Paratypes: Indonesia, Bali, 1 male, collected together with holotype ; 2 females and 2 males, data very similar to holotype, but 30.viii.1984.

Comments. This species is described from lowlands of Bali, Indonesia, based on three females and three males taken from dead leafy branches, and may be included in the pictipes -group. The structures of this species are apparently very similar to those of the widespread species, N. pictipes , and they are possibly closely related. Although pictipes has antennal segments III and IV with three (1+2) and four (2+2 +1) sense cones respectively, this species has these antennal segments with two (1+1) and four (2+2) sense cones. N. rangi sp. nov. described below from Phuket Is., southern Thailand, also has two (1+1) and four (2+2) sense cones, but it is distinct in having the body bicolored and the metanotal median setae arising far apart from each other.