Hybos konkaogwang, PLANT, 2013

PLANT, ADRIAN R., 2013, The genus Hybos Meigen (Diptera: Empidoidea: Hybotidae) in Thailand, Zootaxa 3690 (1), pp. 1-98 : 35-36

publication ID

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

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scientific name

Hybos konkaogwang

sp. nov.

Hybos konkaogwang View in CoL sp. nov.

( Figs 82–85 View FIGURES 82–85 , 241 View FIGURES 240–241 , 256 View FIGURES 251–259 )

Type material. HOLOTYPE male: THAILAND, Chiang Mai Province, Doi Chiangdao, Pakea Station , Evergreen forest, 19°18'50.7"N, 98°49'57.8"E, 1560 m, 10–16.x.2009 [ QSBG-2009-267 ] ( QSBG) GoogleMaps . PARATYPE: 1 ♂, same data as holotype, 16–22.x.2009 (QSBG-2009-270) ( NMWC).

Etymology. The species is named using a concatenation of the Thai kon nok (feather of a bird) and kao gwaang (antler) in fanciful reference to the subplumose antennal stylus.

Diagnosis. A black legged species with largely dark setae on coxae, stylus subplumose on basal 0.7. The mid tibia has 3 evenly sized dorsal bristles, clearly distinct from surrounding setae but only 3X as long as limb is deep. The hind tibia is rather stout with a small apicoventral spur and the mid metatarsus lacks a strong ventral spine near base. Distinguished from H. lannaensis sp. nov. primarily by having a shorter more quadrate discal cell and with apical section of M 1 not curving upwards near tip. The male terminalia are distinctive.

Description. Male: body length 3.5 mm. Head subshining black, dusted greyish; face blackish yellow, darker adjoining eye margin; occipital setae black, some pale setae on lower occiput. Antenna black; postpedicel ovate in lateral view, ~2.0–2.5X long as wide, without distinct dorsal setae; stylus 5–6X long as postpedicel, subplumose on proximal 0.7, hairs slightly longer than stylus is deep; apical 0.3 bare. Mouthparts blackish, palpus narrow, with distinct apical hair. Thorax with ground colour black; postalar callus laterally and scutellum narrowly at base yellowish; dusted brownish grey; acr fine and hair-like, 4-serial, prescutellar acr stronger; dc slightly longer than acr, presutural dc much stronger; a few small setae about and behind postpronotal lobe; 1 strong and 1 weak npl; 1 fine pa with 1–2 much smaller setulae nearby; 1 pair of fine sct with smaller hairs on posterior margin of scutellum. Legs subshining black, thinly dusted greyish; extreme base of T 3 narrowly yellowish. Coxae with hairs and bristles mostly dark, somewhat yellowish brown behind C 3. F 1 with pv fringe of brownish hairs on basal 0.6 as long as limb is deep, virtually absent distally; av fringe shorter. F 2 very slightly narrowed at middle viewed from above, with fringe of distinct fine anterior bristles on basal half as long as limb is deep; pv fringe medially and av fringe distally with some hairs obviously longer than limb is deep; apical setae hardly longer than surrounding hairs. F 3 strongly and evenly inflated, 5–6X long as wide, widest 0.5 from base; ventral spines numerous, shorter than limb is deep, comprising ~11–12 anteroventrals, similar number of shorter spines ventrally and ~3 short spines posteroventrally near base; pv fringe brownish black, becoming longer distally where longer than limb is deep; strong bristles anteriorly at 0.5 and 0.7 from base with 1–2 finer bristles on basal 0.5. T 1 with ventral fringe of fine dark hairs more or less confined to distal 0.6 where ~3–6X long as limb is deep from which apical circlet not clearly distinguishable; 2–3 shorter more erect dorsal setae. T 2 with distinct erect bristles at ~0.2, 0.5 and 0.7 from base, uniformly ~3X as long a limb is deep; finer slightly shorter hairs anteriorly and equally long hairs posteroventrally near apex; apical circlet comprising 1 distinct anterior (~0.7X length of MT 2) and a few much shorter setae below. T 3 rather stout, gently and evenly curved, with distinct but small slightly projecting apicoventral spur, not as wide as limb is deep; series of fine hairs dorsally, becoming longer distally, without any stronger bristles admixed but with 1 subapical longer, about 2X long as limb is deep; ventral pile pale in certain lights. MT 1 with 2 small stout bristles near base ventrally; numerous long fine av and pv hairs, some of which are ~0.5X long as segment, continued but becoming shorter on second tarsomere, more or less absent on distal tarsomeres; 1 pair of long fine bristles dorsoapically on MT 1 and second tarsomere. MT 2 with distinct dorsal hair before tip and longish hairs posteroventrally, becoming shorter distally; lacking strong ventral bristle at base. MT 3 weakly spinose ventrally with brownish pile. Wing membrane faintly brownish, especially apically and anteriorly; veins brownish; stigma distinct, brown, short, reaching costa 0.6–0.7 distance between end of R 1 and R 2+3. Cell dm rather broad and quadrate apically <3X long as wide, ~0.8X length as upper vein (M 1) from cell ( Fig. 241 View FIGURES 240–241 ); apical section of M 1 more or less linear, not curved upwards near tip, parallel with or slightly diverging from R 4+5. Squamae with pale fringes. Halter white. Abdomen black, thinly dusted, subshining with somewhat bronze reflections; bristly hairs mostly pale, longest and more numerous laterally and ventrally, becoming shorter distally. Terminalia ( Figs 82– 85 View FIGURES 82–85 ): left epandrial lamella rather narrow, with long apical bristles ( Fig. 82 View FIGURES 82–85 ); left surstylus ( Fig. 84 View FIGURES 82–85 ) with two broad processes appearing apically blunt or pointed according to view; right epandrial lamella with strong bristles, especially distally; right surstylus ( Fig. 85 View FIGURES 82–85 ) of complicated structure with one narrow and one broad apical process and bilobed lower process situated internally; hypandrium ( Fig. 83 View FIGURES 82–85 ) broad apically with dense ‘brush’ of evenly sized strong black bristles. Female. Unknown.

Comment. Hybos konkaogwang sp. nov. clearly has affinities with H. lannaensis sp. nov., both having similar chaetotaxy of the legs and a rather stout hind tibia with a small but distinct apicoventral spur. Hybos marginatus Yang & Yang, 1989 from Sichuan, China is also probably closely related, sharing a dense ‘brush’ of regular apical bristles on the hypandrium and a similarly shaped left surstylus to that of H. konkaogwang sp. nov. Hybos konkaogwang sp. nov. is only known from specimens collected in October at Doi Chiangdao (Daen Lao Range), northern Thailand ( Fig. 256 View FIGURES 251–259 ).


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