Hybos mangraii PLANT 2013, sp. nov.
Creators: name: PLANT, ADRIAN R.
Publisher: name: Zenodo
Year: 2013
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Hybotidae
Hybos
Hybos mangraii

description: Hybos mangraii sp. nov.
(Figs 97–100, 259)
Type material. HOLOTYPE ♂: THAILAND, Lampang Province, Chae Son National Park, Mae Paan unit, 18°49.644'N, 99°24.711'E, 815m, 15–21.v.2008, Malaise trap, B. Kwannui & A. Sukpeng [T5295] (QSBG).
PARATYPES: 5♂, 2♀, same data as holotype; 5♂, 1♀, campground/lavatory, 18°49.894'N, 99°28.354'E, 467 m, 7–14.v.2008, 14–21.v.2008: 4♂, Loei Province, Phu Ruea National Park, Hua Dong Tamsun, 17°29.54'N, 101°20.995'E, 1130 m, 5–12.v.2007, 12–19.v.2007: 2♀, Chiang Mai Province, Doi Chiangdao, Pakea Station, Evergreen forest, 19°18'50.7"N, 98°49'57.8"E, 1560 m, 19–25.v.2009, 31.v.-6.vi.2009: 3♂, Chiang Mai Province, Doi Phahompok National Park, Kiewlom 1/montane forest, 20°3.549'N, 99°8.552'E, 2174 m, 7–14.v.2008, 28.v.- 7.vi.2008; 1♂, Doi Phaluang, 20°1.06'N, 99°9.581'E, 144 9m, 28.ix.-4.x.2007 (QSBG and NMWC).
Etymology. Named after Mangrai, 1 st king and founder of the Mangrai dynasty of Lan-na.
Diagnosis. A distinctive species with black thorax, legs mostly yellow, including anterior and mid coxae and mid femur but with hind femur entirely black. The antennal stylus is micropilose or subplumose on proximal 0.8 and on the abdomen the first tergite has yellow lateral margins.
Description. Male: body length 3.5–4.0 mm. Head subshining black, thinly dusted; upper postocular setae brown, somewhat paler at sides; lower occiput with rather conspicuous whitish hairs. Antenna dark grey; postpedicel ovate in lateral view, ~2.5X long as wide, lacking dorsal seta; stylus micropilose or subplumose on proximal 0.8–0.9, hairs hardly longer than stylus is deep, apical 0.1–0.2 bare. Mouthparts brownish, palpus very narrow, with 1–2 short distinct setae apically. Thorax with ground colour black; postalar callus, postpronotal lobe very narrowly and sometimes outer edge of scutellum yellowish; pleura slightly paler, yellowish black, meron with posterior margin often yellowish; rather thickly greyish dusted; acr and dc fine, not continued over prescutellar depression; posterior dc and acr larger bristle-like; 1 strong and 1 weak npl; pa weak; sct with 2 strong marginal bristles and several fine hairs; prothoracic ‘collar’ with yellowish brown bristles. Legs with C 1 and C 2 dark yellowish brown, C 3 black; F 1, F 2 and all tibiae yellow to brownish yellow; F 3 black; tarsi yellowish, becoming darker on distal segments. Coxae with whitish setae, longest behind C 3. F 1 with pv fringe of distinct fine bristles not longer than limb is deep. F 2 with pv fringe very short; 2 fine black bristles dorsally at tip. F 3 quite strongly inflated, widest 0.6–0.8 from base; ventral spines black, comprising av series of ~8 strong bristles which are as long as limb is deep, behind which are ~12–13 similar bristles (apical 3–4 much smaller, spine-like); pv fringe complete, strong, black and bristle-like on distal 0.4, weaker, yellowish and hair-like proximally; 5–6 strong slightly proclinate anterior bristles on distal 0.5. T 1 with 1 distinct bristle at ~0.6 from base and longer apical ad; ventral hairs fine, rather longer than limb is deep. T 2 with very strong black bristles 0.7X long as limb dorsally at 0.4 and ventrally at 0.5; weaker but still distinct bristles dorsally at 0.1, 0.7 and sometimes 0.5 from base; apical circlet of 6–7 strong bristles, av longest, ~0.7X long as MT 1. T 3 slightly swollen apically, 1 strong bristle dorsally at 0.5 and another slightly smaller at 0.6. MT 1 with distinct dark bristle ventrally near base, otherwise covered with rather fine pale hairs, longer posteriorly and at tip. MT 2 with strong av and pv bristles at base; similar ventrals at 0.4 and 0.7; apical circlet strong. MT 3 short spinose ventrally. Wing membrane tinged brown, veins brown; stigma distinct, brownish, reaching 0.6–0.7X distance between end of R 1 and R 2+3. Squamae with white fringes. Halter white, stem darker. Abdomen subshining black, thinly dusted, somewhat paler ventrally near base; tergite 1 yellow laterally; setae rather long, whitish, not becoming shorter behind and at sides on distal segments. Terminalia (Figs 97–99) black, inner margin of right epandrial lamella with short triangular subapical process and long setae apically (Fig. 97); left epandrial lamella produced on inner margin, with long marginal setae (Fig. 98). Right surstylus very broad basally in lateral view, with long blunt apical lobe (Fig. 97). Left surstylus with long digitiform process and shorter apically pointed process (Fig. 98). Hypandrium (Fig. 99) with blackish apical process and yellowish subapical process, both somewhat incurved; left margin with long setae. Female. Differing from male as follows. Legs with bristles less strongly developed; T 2 usually without strong dorsal setae except those at 0.1 and 0.4; F 3 much less strongly inflated, ventral spines less conspicuous, usually only 1 proclinate anterior bristle, pv fringe weaker with only 1–2 strong black bristles near tip. MT 2 with only 1 strong ventrobasal, lacking distinct bristles at 0.4 and 0.7, apical circlet weaker. Terminalia (Fig. 100) blackish, with brownish hairs and bristles; tergite 8 almost encircling abdomen, distinct fringe of setae on posterior margin.
Comment. The male terminalia of Hybos mangraii sp. nov. share similarities with those of H. guizhouensis Yang & Yang, 1988 described from Guizhou, China (Yang & Yang 1988a). However in H. mangraii sp. nov. the apical processes on the hypandrium and shape of the right surstylus are substantially different from H. guizhouensis which also has both mid and front femora black rather than yellow. Hybos mangraii sp. nov. is known from the Daen Low Range and Khun Tan Chain in northern Thailand and the Petchabun Range in north-eastern Thailand (Fig. 259). Most were captured in May or early June and the species occurs over a wide elevation range from 467– 2,174 m.
description: Published as part of PLANT, ADRIAN R., 2013, The genus Hybos Meigen (Diptera: Empidoidea: Hybotidae) in Thailand, pp. 1-98 in Zootaxa 3690 (1) on pages 40-42, DOI: 10.11646/zootaxa.3690.1.1, http://zenodo.org/record/6329811