Hybos phahompokensis, PLANT, 2013

PLANT, ADRIAN R., 2013, The genus Hybos Meigen (Diptera: Empidoidea: Hybotidae) in Thailand, Zootaxa 3690 (1), pp. 1-98 : 52

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https://doi.org/ 10.11646/zootaxa.3690.1.1

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scientific name

Hybos phahompokensis

sp. nov.

Hybos phahompokensis View in CoL sp. nov.

( Figs 126–130 View FIGURES 126–130 , 234, 238 View FIGURES 226–239 , 266 View FIGURES 260–268 )

Type material. HOLOTYPE ♂: THAILAND, Chiang Mai Province, Doi Phahompok National Park , Kiewlom1 / Montane Forest, 20°3.549'N 99°8.552'E, 2174 m, 21–28.iv.2008, Malaise trap, K. Seesom [ T6075 ] ( QSBG). GoogleMaps PARATYPES: 6♂, 1♀, same data as holotype, 21–28.iv.2008 and 28.iv.-7.v.2008; 1♂, 1♀, Doi Phahompok National Park   GoogleMaps , Doi Phaluang, 20°1.06'N 99°9.581'E, 1449 m, 28.iv.-7.v.2008 ( QSBG and NMWC) .

Etymology. Named after the type locality, Doi Phahompok.

Diagnosis. A black legged species with entirely pale setae on coxae and stylus micropilose on basal 0.8. The mid tibia has 1 dorsal and 1 ventral seta very long; the hind femur is slightly inflated in the male and hardly less so in the female. The hind tibia rather slender in both sexes, only slightly swollen apically. Distinguished from H. zhejiangensis Yang & Yang, 1995 and H. shamshevi sp. nov. primarily by differences of male and female terminalia.

Description. Male: body length 4.5–5.0 mm. Almost identical with H. zhejiangensis in both sexes. Male F 3 ( Fig. 234 View FIGURES 226–239 ) and T 3 ( Fig. 238 View FIGURES 226–239 ) rather slender. Female F 3 hardly narrower than male, ventral spines narrowly biserial comprising ~6 av bristles behind which are ~13 smaller setae. Male terminalia ( Figs 126–129 View FIGURES 126–130 ) with all bristles dark. Left epandrial lamella with concave inner margin, moderately long setae distally. Left surstylus ( Fig. 129 View FIGURES 126–130 ) with long curving dorsal process and much shorter triangular process below. Right epandrial lamella with inner margin slightly protuberant. Right surstylus moderately long, somewhat incurved, narrow and bluntly pointed viewed from above ( Fig. 126 View FIGURES 126–130 ), much broader viewed from the side ( Fig. 128 View FIGURES 126–130 ), with internally directed pointed triangular process basally. Hypandrium ( Fig. 127 View FIGURES 126–130 ) elongate, vaguely narrowed subapically, with short black triangular and more rounded, yellowish, subapical processes. Female terminalia ( Fig. 130 View FIGURES 126–130 ). Tergite 8 with posterior margin deeply concave. Sternite 8 weakly sclerotized apart from small lateral areas proximally and median area which is broader apically and interrupted near base.

Comments. This species is very similar to H. zhejiangensis , H. shamshevi sp. nov. and especially H. inthanonensis sp. nov. but can be confidently separated in both sexes by the form of the terminalia. At present it is known only from specimens collected in April at 2,174 m and 1,449 m on Doi Phahompok (Daen Lao Range) in the far north of Thailand ( Fig. 266 View FIGURES 260–268 ).


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