Karnyothrips inpallens Okajima & Masumoto, 2025, sp. n.
Creators: name: Okajima, Shûji
name: Masumoto, Masami
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Thysanoptera
Phlaeothripidae
Karnyothrips
Karnyothrips inpallens

description: Karnyothrips inpallens sp. n.
(Figs 21. 104–109)
Female (macroptera). Distended body length: 1.8mm. Bicolored species (Fig. 21). Body largely yellow; head pale brown, with posterior portion yellowish; pterothorax pale brown, with anterior and posterior portions yellowish; tube pale brown, with base yellowish; abdominal segments III – VIII each with a median pale brown marking along antecostal suture. All legs yellow. Antennal segments I and IV – VIII pale brown to brown, segment I more or less paler than head, segments IV – VIII gradually but scarcely darkened distally, extreme base of segment IV yellowish, segments II and III yellow. Fore wing slightly tinged with brown; major body setae pale. Head 1.39 times as long as wide (Fig. 104), widest across at the middle of cheeks; dorsal surface almost smooth. Cheeks weakly rounded, weakly serrate. Postocular setae shorter than eyes, expanded at apex, 98µm apart from each other, 11–12µm apart from eyes in holotype. Eyes relatively small, 0.31 times as long as head. Posterior ocelli in contact with eyes, about 23µm apart from each other. Antennae about 1.74 times as long as head; segment VIII slightly constricted basally (Fig. 108), narrowly fused to segment VII, about 0.66 times as long as VII; segment VII almost as long as III; segment IV the longest (Fig. 109), much longer than III; segments III and IV with three (1+2) and four (2+2 +1) sense cones respectively. Maxillary stylets reaching postocular setae, relatively wider apart, their distance 0.23 times as wide as head, 28µm apart from each other; maxillary bridge weak. Pronotum about 0.7 times as long as head, about 1.4 times as wide as long, almost smooth; four pairs of prominent setae expanded; aa and ml subequal in length, pa a little longer than ml, epim the longest. Notopleural sutures complete. Basantra wider than long; mesopresternum narrowly boat-shaped; prospinasternum large, widely fan-shaped, 48µm wide (Fig. 106). Metanotum sculptured medially with longitudinal reticulation; median pair of setae weak, short and acute, about 20µm long, 41µm apart from each other, 41–43µm apart from anterior margin. Fore wing with 4–5 duplicated cilia; three sub-basal setae expanded. Pelta trapezoid (Fig. 107), sculptured weakly, 1.24 times as wide as long. Tergite IX S1 setae expanded, almost as long as tube, S2 sharply pointed, longer than tube. Tube about half as long as head, 1.75 times as long as wide. Terminal setae longer than 2.0 times as long as tube.
Measurements (holotype female in µm). Body length 1770 (distended). Head length 167, from anterior margin of eyes 155, width across eyes 116, maximum width across cheeks 120, minimum width across base 103; eyes length 52; diameter of posterior ocelli 11–13; postocular setae about 30. Maxillary bridge width 30. Antenna total length 290, segments III–VIII length (width) as follows: 37 (25), 42 (26), 37 (23), 34 (22), 38 (20), 25 (12). Pronotum length 115, width 163. Setae on prothorax: aa 33–34, ml 33–35, pa 38, epim 47–52. Fore wing length 600. Sub-basal wing setae: S1 30, S2 32 –33, S3 33. Pelta length 55, width 68. Tergite IX setae: S1 83, S2 101. Tube length 84, maximum width 48; terminal setae 190–192.
Male (macroptera). Distended body length: 1.25mm. Very similar to macropterous female in color and structure. Antennal segment III largely yellow, but slightly shaded with brown; abdominal segment IX pale brown but anterior portion yellowish. Maxillary stylets somewhat wider, about 0.3 times as wide as head, 33µm apart from each other. Mesopresternum almost divided into two lateral plates. Terminal setae longer than 2.5 times as long as tube.
Measurements (paratype male in µm). Body length 1250 (distended). Head length 138, from anterior margin of eyes 129, width across eyes 103, maximum width across cheeks 106, minimum width across base 87; eyes length 45; diameter of posterior ocelli 9–11; postocular setae 34–35. Maxillary bridge width 40. Antenna total length 255, segments III–VIII length as follows: 34, 35, 32, 30, 32, 22. Pronotum length 92, width 128. Setae on prothorax: aa 26–28, ml 28–29, pa 30–31, epim 36–38. Fore wing length 500. Sub-basal wing setae: S1 23 –25, S2 23 –25, S3 23 –26. Pelta length 41, width 48. Tergite IX setae: S1 67–68, S2 25 –27. Tube length 71, maximum width 38; terminal setae 181–183.
Type material. Holotype: macropterous female, Peninsular Malaysia, about 20km N from Kuala Lumpur, on dead branches, 11.viii.1990, TN & SO. Paratypes: Peninsular Malaysia, 1 female (mac.) and 1 male (mac.), collected together with holotype.
Comments. This species is described based on macropterous two females and one male taken from dead branches in Peninsular Malaysia, and has three (1+2) and four (2+2 +1) sense cones on antennal segments III and IV respectively. It can easily be distinguished from other species that have the same sense cone formula by the bicolored pattern of the body, with the head, pterothorax and tube largely pale brown, in contrast to the rest of the largely yellowish body (Fig. 21).
description: Published as part of Okajima, Shûji & Masumoto, Masami, 2025, Review of the genus Karnyothrips (Thysanoptera, Phlaeothripidae) from Asia between India and Japan, pp. 1-82 in Zootaxa 5578 (1) on pages 38-40, DOI: 10.11646/zootaxa.5578.1.1, http://zenodo.org/record/14763175