Karnyothrips lalae, Okajima & Masumoto, 2025

Karnyothrips lalae sp. n.

( Figs 22 View FIGURES 21–30 , 110–115 View FIGURES 110–115 )

Female (microptera). Distended body length: 1.8–2.0mm. Brown species ( Fig. 22 View FIGURES 21–30 ). All femora brown, almost concolorous with head; all tibiae pale brown, with apices yellowish; all tarsi yellow. Antennae largely brown, segment III yellowish brown, a little paler than segment IV, segments IV – VI pale brown to brown, gradually darkened distally, segment IV with extreme base yellowish. Major body setae pale. Head about 1.30–1.35 times as long as wide ( Fig. 110 View FIGURES 110–115 ), 1.33 times in holotype , widest across at the middle of cheeks; dorsal surface almost smooth. Cheeks sub-parallel, very weakly rounded, weakly serrate. Postocular setae a little shorter than eyes, expanded at apex, 103µm apart from each other, 11–12µm apart from eyes in holotype. Eyes relatively small, shorter than one-third of head length, 0.27 times in holotype. Ocelli small; posterior pair about 40µm apart from each other in holotype. Antennae about 1.7–1.8 times as long as head; segment VIII conical ( Fig. 114 View FIGURES 110–115 ), not constricted basally, widely fused to segment VII, about 0.7 times as long as VII; segment VII almost as long as III; segment IV the longest ( Fig. 115 View FIGURES 110–115 ), much longer than III; segments III and IV with one (0+1) and two (1+1) sense cones respectively. Maxillary stylets scarcely reaching eyes, close together, their distance less than one-fifth of head width, 24µm apart from each other in holotype ; maxillary bridge weak. Pronotum about 0.7–0.8 times as long as head, 0.75 times in holotype, 1.46 times as wide as long in holotype, almost smooth; four pairs of prominent setae expanded; aa and pa subequal in length, ml longer than pa, epim the longest. Notopleural sutures complete or incomplete (left one complete but right one incomplete in holotype, and two paratype females also show similar condition). Basantra wider than long; mesopresternum reduced, divided into two lateral small triangle plates; prospinasternum relatively small, fan-shaped, about 30µm wide in holotype ( Fig. 112 View FIGURES 110–115 ). Metanotum weakly sculptured anteriorly with reticulation; median pair of setae weak, short and acute, about 20µm long, 51µm apart from each other, 30–33µm apart from anterior margin. Pelta trapezoid ( Fig. 113 View FIGURES 110–115 ), with irregular lateral margins, sculptured weakly, 1.61 times as wide as long in holotype. Abdominal tergites III – V each with a posterior pair of wing-retaining setae somewhat developed. Tergite IX S1 setae expanded, shorter than tube, S2 sharply pointed, almost as long as tube or a little longer. Tube about 0.6 times as long as head, 0.59 times, 1.88 times as long as wide in holotype . Terminal setae shorter than 2.0 times as long as tube, 1.7–1.8 times as long as tube in holotype.

Measurements (holotype female in µm). Body length 1810 (distended). Head length 182, from anterior margin of eyes 171, width across eyes 130, maximum width across cheeks 137, minimum width across base 126; eyes length 50; diameter of posterior ocelli 5–6; postocular setae 45. Maxillary bridge width 23. Antenna total length 320, segments III–VIII length (width) as follows: 40 (27), 47 (30), 41 (27), 36 (25), 39 (24), 27 (14). Pronotum length 137, width 200. Setae on prothorax: aa 30–32, ml 40–43, pa 32, epim 42–43. Pelta length 62, width 100. Tergite IX setae: S1 92–93, S2 108–114. Tube length 107, maximum width 57; terminal setae 180–192.

Male (microptera). Distended body length: 1.5 mm. Very similar to micropterous female in color and structure. Maxillary stylets wider apart ( Fig. 111 View FIGURES 110–115 ), a little wider than 1/4 head length. Abdominal tergites III–VI each with a posterior pair of wing-retaining setae rather developed. Tube 0.55 times as long as head.

Measurements (paratype male in µm). Body length about 1500 (distended). Head length 165, from anterior margin of eyes 153, width across eyes 115, maximum width across cheeks 119, minimum width across base 101; eyes length 50; diameter of posterior ocelli 5–7; postocular setae 40. Maxillary bridge width 35. Antenna total length 290, segments III–VIII length as follows: 35, 41, 37, 35, 37, 23. Pronotum length 127, width 165. Setae on prothorax: aa 25, ml 35, pa 35, epim 35. Pelta length 52, width 82. Tergite IX setae: S1 80–85, S2 34 –36. Tube length 91, maximum width 52; terminal setae 158–164.

Type material. Holotype: micropterous female, Taiwan, Taoyuan Hsien, Mt. Lala-shan , on dead leaves and branches, 19.viii.1993, TN & SO . Paratypes: Taiwan, 2 females (mic.) and 1 male (mic.), collected together with holotype .

Comments. This species is described base on micropterous three females and one male taken from dead leafy branches in mountainous area of Taiwan. It has one (0+1) and two (1+1) sense cones on antennal segments III and IV respectively, and is apparently somewhat similar to K. micrommatus sp. n. described below from Peninsular Malaysia and K. spinulus from Japan. However, this species has the S1 setae on the abdominal tergite IX expanded and shorter than the tube, whereas those of micrommatus and spinulus are pointed and longer than the tube.