Asianthrips bicolor Okajima & Masumoto 2022, sp. n.
Creators: name: Okajima, Shuji
name: Masumoto, Masami
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Thysanoptera
Phlaeothripidae
Asianthrips
Asianthrips bicolor

description: Asianthrips bicolor sp. n.
(Figs 3–4, 41–47)
Female macroptera. Body bicoloured (Fig. 3). Head, mesothrorax, anterior and lateral portions of metathorax, and tube brown, the remaining of the body yellowish, partly shaded with pale brown; abdominal tergite I shaded with brown laterally, tergite II brownish anteriorly, tergites III – VIII each with a median pale brown marking at just behind antecostal suture, tergite IX shaded posteroangularly. Antennal segment III yellowish, shaded with pale brown at anterior half. All legs yellowish. Fore wings very weakly shaded. Body setae almost colourless. Head (Fig. 41) almost as long as wide; dorsal surface generally sculptured with transverse reticulation. Cheeks incut just behind eyes, distinctly narrowed towards base. Postocular setae shorter than eyes. Postocellar setae shorter than a diameter of posterior ocellus. Eyes large, 0.45–0.46 times as long as head. Antennal segments VII and VIII somewhat broadly fused, but segment VIII not constricted at base, cone-shaped (Fig. 43); segment III with three sense cones. Maxillary stylets almost reaching postocular setae, rather wide apart, wider than 1/3 of the head width apart at the basal collar of head. Pronotum (Fig. 41) 0.57 times as long as head and 1.97 times as wide as long, median portion almost smooth, but with a short and weak median longitudinal line; epim the longest, pa about 0.6 times as long as median pronotal length. Basantra comparatively developed. Metanotum polygonally reticulated. Prospinasternum well developed. Mesopresternum and mesoeusternum (Fig. 44) widely fused, with vestigial sutures between them at both sides. Fore tarsi unarmed. Fore wings with 5–6 duplicated cilia. Tergites not small, tergites III – V much wider than pronotum. S1 and S2 setae on tergite IX weakly expanded, S1 0.78–0.79 times as long as tube, a little shorter than S2. Tube (Fig. 47) 0.58 times as long as head. Anal setae almost as long as tube.
Measurements. Female holotype (mac.) in microns. Distended body length about 1800. Head length 165, width across cheeks 160. Compound eye dorsal length 75–76. Pronotum length 94, width 185. Fore wing length about 670. Tube length 96, width across base 55. Antenna length 335, segments III–VIII length (width) as follows: 53 (26), 57 (27), 49 (24), 49 (21), 43 (20), 32 (13). Postocular setae 62–64. Pronotal aa about 40, am 45–50, ml about 50, pa 55–56, epim 65–66. S1 setae on tergite IX 75–80, S2 setae on tergite IX about 80. Anal setae 98.
Female microptera. Very similar in colour to macropterous female (Fig. 4). Head (Fig. 42) a little longer than wide; eyes small, 0.38–0.39 times as long as head; ocelli absent; metanotum (Fig. 42) shorter than that of macroptera, sculpture weaker; abdominal tergites without sigmoid wing retaining setae; S1 and S2 setae on tergite IX subequal in length.
Measurements. Female paratype (mic.) in microns. Distended body length about 1600. Head length 145, width across cheeks 139. Compound eye dorsal length 56. Pronotum length 95, width 175. Fore wing length about 90. Tube length 85, width across base 51. Antenna length 335, segments III–VIII length (width) as follows: 48 (28), 51 (29), 44 (27), 43 (23), 39 (21), 32 (14). Postocular setae 55. Pronotal aa?30, am 44–45, ml 45–48, pa 57–59, epim about 50. S1 setae on tergite IX 74–75, S2 setae on tergite IX 72–73. Anal setae 81–83.
Male macroptera. Very similar in colour and structure to macropterous female, except for the followings: Body smaller, tergites IV and V almost as wide as pronotum; fore wings with 5–6 duplicated cilia. Fore tarsi unarmed.
Measurements. Male paratype (mac.) in microns. Distended body length 1250. Head length 147, width across cheeks 137. Compound eye dorsal length 65. Pronotum length 77, width 157. Fore wing length about 520. Tube length 70, width across base 43. Antenna length 310, segments III–VIII length (width) as follows: 47 (24), 48 (25), 42 (23), 40 (21), 35 (20), 27 (13). Postocular setae 50–53. Pronotal aa about 30, am 35–37, ml 38–40, pa 45, epim 45–47. S1 setae on tergite IX 55, S2 setae on tergite IX 25–27. Anal setae about 70.
Type series. Holotype female (mac.): Thailand, nr. Chiang Mai, Phrow, on bamboo, 22.viii.1992 (TN & SO). Paratypes: Thailand, Phuket Is., nr. Tone Sai Waterfall, on dead leaves and branches, 1 female (mic.), 12.ix.1992, 1 male (mac.), 14.ix.1992 (TN & SO).
Remarks. A. bicolor is somewhat similar to A. setifer newly described below from southern Sulawesi, Indonesia, in colour pattern. Although the antennal segments IV and V of A. setifer each bears a series of 7–11 setae arranged in a longitudinal row on ventral surface (Fig. 125), this species do not have such a series of setae, at least in macropterae.
description: Published as part of Okajima, Shuji & Masumoto, Masami, 2022, The genus Asianthrips an Oriental fungus-feeding phlaeothripine (Thysanoptera, Phlaeothripidae), pp. 101-138 in Zootaxa 5124 (2) on pages 110-112, DOI: 10.11646/zootaxa.5124.2.1, http://zenodo.org/record/6404864