Karnyothrips macrommatus, Okajima & Masumoto, 2025

Karnyothrips macrommatus sp. n.

( Figs 24 View FIGURES 21–30 , 122–127 View FIGURES 122–127 )

Female (macroptera). Distended body length: 2.2–2.3mm. Bicolored species ( Fig. 24 View FIGURES 21–30 ). Head, prothorax, mesothorax and tube brown, mesothorax scarcely paler than head, tube slightly paler at extreme base and apical half; metathorax and abdominal segment I largely yellow, but abdominal segment I weakly shaded laterally; abdominal segment II – VIII largely yellow, segment II shaded with brown medially and anterolaterally, segments III – VI shaded with brown medially, segment VII very weakly shaded medially; segment IX pale brown, with anterior portion yellow. Fore femora brown with apical half yellowish, mid and hind femora yellowish, scarcely shaded with pale brown; all tibiae and tarsi yellow. Antennal segments I and IV – VIII brown, segment IV with extreme base yellowish; segments II and III yellow. Fore wing weakly shaded with pale brown, but with extreme base and apex pale; major body setae pale. Head about 1.33 times as long as wide ( Fig. 122 View FIGURES 122–127 ), dorsal surface almost smooth. Cheeks weakly rounded, serrate. Postocular setae shorter than eyes, expanded at apex, 125µm apart from each other, 15–17µm apart from eyes in holotype. Eyes largely developed, about 0.4 times as long as head, 0.38 times in holotype. Ocelli largely developed, posterior pair in contact with eyes, 18µm apart from each other in holotype. Antennae about 1.7 times as long as head; segment VIII relatively slender ( Fig. 126 View FIGURES 122–127 ), distinctly constricted basally, narrowly fused to VII, about 0.74 times as long as VII in holotype; segment III longer than VII, almost as long as IV ( Fig. 127 View FIGURES 122–127 ); segments III and IV with two (1+1) and four (2+2 +1) sense cones respectively. Maxillary stylets reaching eyes, about 1/4 of head width apart, 40µm apart from each other in holotype; maxillary bridge weak. Pronotum about 0.76 times as long as head ( Fig. 123 View FIGURES 122–127 ), 1.31 times as wide as long in holotype, almost smooth; four pairs of prominent setae long and expanded; pa longer than aa, epim the longest. Notopleural sutures complete. Basantra much wider than long; mesopresternum divided into lateral two triangle plates; prospinasternum large, rhomboid, 45µm wide in holotype ( Fig. 124 View FIGURES 122–127 ). Metanotum very weakly sculptured medially with longitudinal reticulation; median pair of setae weak, short and acute, but longer than 20µm, 25–30µm long in holotype, 38µm apart from each other, 60–67µm apart from anterior margin. Fore wing with 7–9 duplicated cilia; three sub-basal setae relatively long and expanded, S3 the longest, longer than postocular setae. Pelta trapezoid ( Fig. 125 View FIGURES 122–127 ), sculptured weakly, about 1.2 times as wide as long. Tergite IX S1 setae expanded, much shorter than tube, S2 sharply pointed, longer than tube. Tube longer than half of head length, 0.55 times as long as head in holotype, about 2.0 times as long as wide. Terminal setae about 1.4 times as long as tube .

Measurements (holotype female in µm). Body length 2250 (distended). Head length 220, from anterior margin of eyes 202, width across eyes 165, maximum width across cheeks 165, minimum width across base 137; eyes length 84; diameter of posterior ocelli 18–25; postocular setae?50. Maxillary bridge width 43. Antenna total length 370, segments III–VIII length (width) as follows: 52 (32), 52 (33), 45 (28), 42 (25), 43 (23), 32 (13). Pronotum length 168, width 220. Setae on prothorax: aa 58–60, ml 60–65, pa 65–68, epim 66–70. Fore wing length 810. Sub-basal wing setae: S1 40 –45, S2 57 –60, S3 65–70. Pelta length 88, width 105. Tergite IX setae: S1 86–92, S2 145. Tube length 120, maximum width 60; terminal setae 165–170.

Male. Unknown.

Type material. Holotype: macropterous female, Indonesia, Sulawesi, Karaenta Forest Res., Maros to Camba , alt. about 400m, on dead Palmae , 6.viii.1984, SO . Paratype: Indonesia, Sulawesi, 1 female (mac.), collected together with holotype .

Comments. This species is described based on two macropterous females taken from dead Palmae fronds in southern Sulawesi, Indonesia. It is peculiar in having large eyes which are about 0.4 times as long as the head ( Fig. 122 View FIGURES 122–127 ), but it could not be distinguished at genus level from the congeners by other character states. These two females were collected together with a good number of specimens of Crinitothrips amabilis , and it is possible that they were preying on them. Moreover, this species has the terminal tube setae somewhat shorter, about 1.4 times as long as tube, and apparently somewhat similar to Mesandrothrips (in part) species, but has the prosternal basantra and ferna situated far apart from each other ( Fig. 124 View FIGURES 122–127 ), and only two sense cones on antennal segment III.