Hoplandrothrips sapae sp. n., 2024

Okajima, Shûji & Masumoto, Masami, 2024, The genus Hoplandrothrips and its relatives (Thysanoptera: Phlaeothripidae) from Southeast Asia and Taiwan, Zootaxa 5489 (1), pp. 22-91 : 52-53

Hoplandrothrips sapae sp. n.

( Figs 45–47 , 244–254 )

Female (macroptera). Distended body length: 2.7–3.4mm. Body uniformly dark brown. Antennal segments I–II and IV–VIII largely dark brown, basal 1/3 of IV and V somewhat paler; segment III bicoloured, yellowish at basal 1/2, brownish at distal 1/2. Legs largely dark brown; fore tibiae scarcely paler, with yellowish bases and apices, mid and hind tibiae dark brown; tarsi brownish. Fore wing scarcely shaded with brown at base and midway. All prominent setae clear. Head ( Fig. 244 ) longer than wide, 1.22 times as long as wide in holotype, dorsal surface sculptured with transverse reticulation or wrinkles, but sculpture weak in vertex behind posterior ocelli, with fine reticulation in ocellar region. Cheeks convex, constricted at anterior ends, serrated, each with a stout sub-basal seta. Postocular setae well-developed, a little shorter than eye, expanded. Eyes about 0.3 times as long as head; distance between posterior ocelli longer than diameter of an ocellus, 30μm apart from one another in holotype. Antennae ( Fig. 250 & 251 ) about 1.8–1.9 times as long as head; segment VIII short, not strongly constricted at base, cone-shaped; segment III with pedicel relatively slender, 2.16 times as long as wide in holotype, longer than segment IV, with three stout sense cones each a little shorter than 1/2 length of the segment. Maxillary stylets retracted to eyes. Pronotum smooth, but reticulate laterally and posteriorly, about 2/3 length of head; five pairs of prominent setae elongate, slender and expanded; am well-developed, but shorter than aa, pa the longest, about 3/4 length of pronotum in holotype. Mesopresternum ( Fig. 252 ) divided into two lateral large triangles and a small median area. Metanotum ( Fig. 249 ) sculptured with polygonal reticulation, with regular polygonal weak reticles in anterior 1/3, longitudinal distinct reticles in posterior 2/3, median pair of setae acute, 45–48μm apart from anterior margin, 102μm apart from one another. Fore tarsal tooth ( Fig. 246 ) short. Fore wings each with 14–16 duplicated cilia in holotype; three sub-basal setae ( Fig. 253 ) expanded, S1 a little shorter than S2, S2 and S3 subequal in length. Pelta ( Fig. 249 ) bell-shaped, distinctly reticulate. Tergite IX posteromarginal setae weakly expanded, S1 and S2 subequal in length, 0.85–0.87 times as long as tube in holotype, intermediate setae slender, shorter than 1/2 length of S1. Tube ( Fig. 254 ) 0.61 times as long as head, 2.24 times as long as wide in holotype. Terminal setae much longer than tube.

Measurements (holotype female in μm). Body length about 3360 (distended). Head length 318, from anterior margin of eyes 290, width across eyes 236, maximum width across cheeks 260; eyes length 100, width 83; diameter of posterior ocelli 20–23; postocular setae 93–90. Antenna total length 590, segments I–VIII length (width) as follows: 65 (51), 58 (38), 108 (50), 95 (50), 84 (40), 63 (32), 55 (29), 35 (16). Pronotum length 200, width 370. Setae on prothorax: am 70–77, aa 93–95, ml 115–120, pa 150–155, epim 98–100. Fore wing length 1300. Sub-basal wing setae: S1 100–103, S2 110–113, S3 110–113. Tergite IX setae: S1 165, S2 170. Tube length 195, maximum width 87; terminal setae 220–240.

Male (macroptera). Distended body length: 2.2–3.0mm. Colour similar to female. Cheeks each with about three or four stout setae. Pronotal am short and acute, shorter than 30μm, aa and ml elongate in large male, pa elongate in both small and large male. Prothorax and fore legs stout in large male; fore coxa with about four pointed stout setae on posterior margin; fore femur ( Figs 247 & 248 ) with a pair of apical tubercles, ventral tubercle larger than dorsal one, dorsal one absent in small male, fore tibia with a sub-basal tubercle, but absent in small male. Mesopresternum small and divided into two lateral triangles and a small median area. Metanotum weakly raised medially in large male, sculptured indistinctly on anterior 1/2. Fore wings sub-basal setae S1 and S2 expanded, S3 nearly pointed, at least not expanded. Abdominal sternite VIII without pore plate; tergite IX S2 setae shorter than 1/2 length of S1, intermediate setae longer than S2. Tube 0.53–0.56 times as long as head.

Measurements (paratype large/small males in μm). Body length 2970/2200 (distended). Head length 317/250, from anterior margin of eyes 290/225, width across eyes 215/180, maximum width across cheeks 224/195; eyes length 92/78, width 66/58; diameter of posterior ocelli 25/17; postocular setae 90/65. Antenna total length 590/490, segments I–VIII length (width) as follows: 53/46 (48/40), 62/53 (37/32), 103/87 (50/40), 92/78 (50/40), 85/68 (39/34), 68/57 (31/27), 58/58 (28/25), 40/32 (18/15). Pronotum length 205/132, width 340/250. Setae on prothorax: am about 23/20, aa 130/40, ml 120/55, pa 130/95, epim 84/60. Sub-basal wing setae: S1 88/63, S2 91/75, S3 75/68. Tergite IX setae: S1 140/125, S2 60 /50. Tube length 168/140, maximum width 81/70; terminal setae 230/200.

Type series. Holotype: macropterous female, Vietnam, Lao Cai Prov., Sa Pa , on dead leaves and branches, 6.viii.2000, SO . Paratypes. Vietnam, 48 females and 51 males, collected together with holotype .

Non-paratypic specimens. China, Sichuan, Mt. Chinchen Fushan , 3 females, 7.vii.1992, T. Niisato ; Nepal, Kathomandu Valley, 2 females, 11.vi.1981, W. Suzuki, Mt. Jamacok , 1 female, 14.v.1993, K. Matsumoto ; Taiwan, Nantou Hsien, Meifeng , 2 females and 1 male, on dead leaves and branches, 1.ix.1994, TN & SO .

Remarks. H. sapae may be related to H. thailandicus sp. n. described below, and the differences between them are discussed under the latter species. The non-paratypic specimens listed above are probably conspecific with this species but have a few small differences. Three females from Sichuan, China, have the antennal segments III–V somewhat paler. Three females from Nepal and two females and one male from Taiwan have the sub-basal wing setae and posteromarginal setae (S1 and S2) on the abdominal tergite IX shorter.

Figures

FIGURES 43–55. Hoplandrothrips and Phlaeothrips species. H. samirseni comb. n. 43–44: (43) female; (44) large male. H. sapae sp. n. 45–47: (45) female; (46) small male; (47) large male. H. sulawesi sp. n. 48–50: (48) female; (49) large male; (50) small male. H. thailandicus sp. n.: (51) female. P. annamensis sp. n. 52–53: (52) small male; (53) large male. P. tonkinensis sp. n. 54–55: (54) female; (55) male.

FIGURES 244–254. Hoplandrothrips sapae sp. n. (244) Head, female; (245) head, male; (246) fore leg, female; (247) fore leg, small male; (248) fore leg, large male; (249) metanotum and pelta, female; (250) antennal segments III–IV, female; (251) antennal segments VI–VIII, female; (252) prosternum and mesopresternum, female; (253) sub-basal wing setae, female; (254) tube, female.