Neandrothrips agkoae, Okajima & Masumoto, 2025

Neandrothrips agkoae sp. nov.

( Figs 102 View FIGURES 102–111 , 112–118 View FIGURES 112–118 )

Female (macroptera). Distended body length: 1.4–1.6mm. Body brown ( Fig. 102 View FIGURES 102–111 ). Fore femora brown, mid and hind femora brown with extreme apices brown; fore tibia brown, mid and hind tibiae brown with bases and apices yellowish; tarsi yellow. Antenna brown, segment III somewhat paler with base scarcely paler. Fore wing scarcely shaded with brown. Major body setae pale. Head ( Fig. 112 View FIGURES 112–118 ) longer than wide, about 1.3 times as long as wide; dorsal surface almost smooth, very weakly sculptured laterally. Cheeks very weakly rounded, constricted at base, weakly bulged at anterior end, weakly serrated. Eyes about 0.3 times as long as head. Ocelli moderately developed; posterior pair in contact with eyes, 18µm apart from each other in holotype. Postocular setae shorter than eyes, expanded; about 90µm apart from each other, about 10µm apart from eyes in holotype. Antennae ( Fig. 118 View FIGURES 112–118 ) relatively short, shorter than 1.6 times as long as head; segment VIII conical, not constricted at base, but basal width narrower than apical width of segment VII, about 0.6 times as long as VII; segment III formed asymmetrically, almost as long as segment VII; segment IV the largest; segments III and IV with three (1+2) and four (2+2 +1) sense cones respectively. Maxillary stylets retracted to eyes, close together, about one-fifth of head width apart; maxillary bridge very weak. Pronotum ( Fig. 112 View FIGURES 112–118 ) shorter than 0.6 times as long as head, 0.56 times in holotype, about 1.8 times as wide as long; almost smooth; five pairs of prothoracic setae well developed, expanded; am setae almost as long as aa, or a little longer; pa and epim subequal in length, almost as long as postocular setae. Prospinasternum ( Fig. 113 View FIGURES 112–118 ) inverted triangle, but weak, about 40µm wide; mesopresternum reduced to lateral small triangles. Mesonotal lateral setae well developed. expanded, 25µm long. Metanotum ( Fig. 114 View FIGURES 112–118 ) sculptured with longitudinal reticulation; median pair of setae pointed, longer than 20µm, distance between both median setae wider than distance between that seta and anterior margin of metanotum, 47µm apart from each other, 33–34µm apart from anterior margin in holotype. Fore tarsal tooth small ( Fig. 116 View FIGURES 112–118 ). Fore wing with 4–5 duplicated cilia; three sub-basal setae expanded, S3 the longest. Pelta ( Fig. 115 View FIGURES 112–118 ) trapezoid, weak, about 1.4 times as wide as long in holotype. Tergites III – VIII S2 setae: III – VI expanded, VII sharply pointed, VIII bluntly pointed. S1 setae on abdominal tergite IX bluntly pointed, shorter than tube, S2 sharply pointed, almost as long as S1, or a little shorter; intermediate setae about half of Sl. Tube ( Fig. 117 View FIGURES 112–118 ) about 0.5 times as long as head, about 2.0 times as long as wide; terminal setae longer than 1.3 times as long as tube .

Measurements (holotype female in µm). Body length 1560 (distended). Head length 183, from anterior margin of eyes 170, width across eyes 122, maximum width across cheeks 140, minimum width across base 115; eyes length 58; diameter of posterior ocelli 12–15; postocular setae 40–42. Maxillary bridge width about 30. Antenna total length about 280, segments III–VIII length (width) as follows: 36 (23), 40 (26), 37 (23), 37 (22), 37 (21), 22 (11). Pronotum length 102, width 183. Setae on prothorax: am 32–34, aa 30, ml 38–40, pa 40, epim 42. Fore wing length 640. Sub-basal wing setae: S1 30 –33, S2 32 –35, S3 35 –40. Pelta length 60, width 85. Tergite IX setae: S1 77–78, S2 73. Tube length 92, maximum width 46; terminal setae 125.

Male. Unknown.

Type material. Holotype: macropterous female, the Philippines, Mindanao , Mt.Apo, Agko, alt. about 1300m, on dead fern, 30.vii.1979, SO . Paratypes: the Philippines, Mindanao , 2 females, collected together with holotype ; 1 female, data very similar to holotype, but collected from dead leaves.

Comments. This species is included in the bamboosae -group and somewhat similar to N. tonesai sp. nov. from Phuket Is., Thailand, described below in having rather long head with the maxillary stylets more or less close together, and the mesopresternum reduced medially. However, it can be distinguished from the latter by the following features: tibiae largely brown; maxillary bridge very weak; antennal segment VIII shorter and conical, not constricted at base; tergite IX S1 and S2 setae shorter than tube; terminal tube setae shorter than 1.5 times as long as tube.