Syneches guangdongensis, Yang & Grootaert, 2004

Yang, Ding & Grootaert, Patrick, 2004, Revision Of The Species Of Syneches From Guangdong (Diptera: Empidoidea: Hybotinae), Raffles Bulletin of Zoology 52 (2), pp. 347-350 : 348

Syneches guangdongensis , new species

( Figs. 1, 2 )

Material examined. – Holotype - male, Guangdong: Ruyuan, Nanling National Nature Reserve , 26 Mar.2003, coll. Ding Yang ( CAU).

Diagnosis. – Antenna black. Palpus brownish yellow. Wing grayish. Femora black with yellow tip.

Description. – Male – Body length 6.0 mm, wing length 5.6 mm.

Head black with gray pollen. Eyes contiguous on frons for a long distance, dark brown with enlarged upper facets dark yellow. Hairs and bristles on head black; ocellar tubercle distinct, with 2 oc and 8 hairs, oc little longer than hairs. Antenna black; scape without hairs; pedicel with circlet of subapical hairs; first flagellomere nearly quadrate with 2 dorsal hairs; arista brown, indistinctly pubescent except tip thin and bare. Proboscis black; palpus brownish yellow with 4 long ventral hairs.

Thorax black with gray pollen. Hairs and bristles on thorax black; h absent, 2 short strong npl subequal in length, mesonotum with short hairs except mid-posterior area with long hairs and with one transverse row of 3 bristle-like prescutellar hairs, 1 long psa; scutellum with long marginal hairs (of which 6 hairs are bristle-like). Legs black; femora with yellow tips; tibiae and tarsi yellow except tarsomere 5 dark brown. Hairs and bristles on legs black. Fore femur 1.1 times as wide as mid femur; hind femur 1.1 times as wide as mid femur, with one row of 7-8 long av which are longer than thickness of hind femur). Fore tibia apically with 2 weak d. Mid tibia with 1 ad at base and several long posterior hairs, apically with 4-5 bristles (of which 1 ad and 1 av are long and brownish yellow). Hind tibia with 1 ad near base, apically with 4-5 bristles. Wing grayish; stigma long and dark brown; veins dark brown, R 4+5 and M 1 convergent apically. Squama brown with pale hairs. Halter dark brown.

Abdomen curved downward, black with gray pollen. Hairs on abdomen black. Male genitalia ( Figs. 1, 2 ): tergal lobe narrowing toward tip in lateral view, its outer apical margin distinctly incised and forming upper and lower apical corners; hypandrium wide basally and narrow apically, its apical margin indistinctly incised; aedeagus nearly straight apically, with curved subapical lateral process.

Female. – Unknown.

Distribution. – China (Guangdong).

Etymology. – The species is named after the type locality Guangdong.

Remarks. – The new species is somewhat similar to Syneches furcatus Saigusa & Yang, 2002 , from Henan, but may be separated from the latter by the legs mostly yellow. In S. furcatus , the legs are black with the mid tarsomeres 1-2 brownish yellow only ( Saigusa & Yang, 2002).

Figures

Figs.1, 2. Syneches guangdongensis, new species (male).1. genitalia, lateral view; 2. hypandrium and aedeagus, ventral view.