Trichopeza liliae, Yang & Grootaert & Horvat, 2005

Yang, Ding, Grootaert, Patrick & Horvat, Bogdan, 2005, Two New Species Of Trichopeza Rondani (Diptera: Empididae) From South China, With A Key To World Species, Raffles Bulletin of Zoology 53 (1), pp. 69-72 : 71-72

Trichopeza liliae , new species

( Figs. 5-7 )

Diagnosis. – First flagellomere fused with arista. Scutellum dark brown. Legs brown; coxae and trochanters pale yellow (coxae contrastingly paler than lower half of thoracic pleura); fore tarsus pale brown, mid and hind tibiae and tarsi black. Male abdomen with basal three segments brown.

Male. – Body length 4.6 mm, wing length 5.0 mm.

Head black with pale grey pollen. Eyes contiguous on face for a long distance, with very short erect hairs. Hairs and bristles on head black; ocellar tubercle weakly prominent with 2 oc. 1 vt (nearly as long as oc). Antenna black; scape three times as long as wide, with 1 or 2 dorsal hairs; pedicel with a circlet of apical hairs; first flagellomere much elongated, fused with arista, black, and very short pubescent. Proboscis directed downward, 0.7 times as long as head height, brownish yellow with black hairs; palpus tubular, about 4 times as long as wide, dark brown (yellowish brown in alcohol), and with 3 ventral hairs, shorter than palpus is long.

Thorax black with pale grey pollen. Hairs and bristles black; h absent, 1 ih, 1 ph, 2 npl (posterior npl very long), 1 sa, 1 psa, at least 4 short dc; scutellum with one pair of long bristles. Legs brown; coxae and trochanters pale yellow; fore tarsus pale brown, mid and hind tibiae and tarsi black. Hairs and bristles on legs black. Fore femur with 1 minute preapical anterior bristle and 1 basal anterior bristle, and with 5 av and 2 long pv at base; mid femur with 1 preapical anterior bristle, with 11-12 av nearly on whole length (4 apical av rather long and flattened, pale and curved), 4-5 pv at base and 3 long, flattened, pale pv at apex; hind femur with 1 preapical anterior bristle. Fore tibia with 1 pd at base. Mid tibia with 2 long ad on basal half, apically with 1 pv. Tip of hind tibia dilated with 1 very long ad and 1 very long av at base (which are located at the same level), and with 1 very long ad at middle. Hind tarsomere 1 with 1 v at extreme base. Wing slightly tinged greyish; veins dark brown. Halter yellow (almost white in alcohol preserved specimens) with a short black bristle halfway the long stalk. Squamae pale without ciliation.

Abdomen largely black with pale grey pollen; basal three segments brown. Hairs and bristles on abdomen black; long on basal tergite, minute on following tergites. Tergite 8 and sternite 8 fused into a circular band rather narrow dorsally. Male genitalia ( Figs. 6-7 ): left and right epandrial lamella connected basally by very narrow dorsal sclerite; left surstylus long rather thick with acute apex; right surstylus distinctly shorter than left surstylus, with acute apex; left cercus straight and finger-like; right cercus rather long and strongly curved.

Female. – Body length 5.3-5.5 mm, wing length 5.9-6.0 mm. Similar to male, but abdomen wholly black, fore femur only with 4-5 av and 4-5 pv at base.

Types. – Holotype male, Guangdong: Ruyuan, Nanling National Nature Reserve, 26. III. 2003, Lili Zhang ( CAU) . Paratypes: 3 females, same data as holotype ( CAU) ; 1 male 2 females, Guangdong: Ruyuan, Nanling National Nature Reserve , 26. III. 2003, Ding Yang ( ZRC) . 1 male Nanling National Nature Reserve , gardens outside entrance of Park, 26.III.2003 ; 1 male, forest near entrance of Park , leg. P. Grootaert ( RBINS) .

Distribution. – China (Guangdong).

Etymology. – The species is named after the collector Mrs. Lili Zhang.

Remarks. – The new species is similar to T. sinensis new species, but can be distinguished from the latter by the first flagellomere fused with the arista, thorax wholly black, femora wholly brown, and male abdomen with the basal three segments brown.

Figures

Figs. 5-7. Trichopeza liliae new species (male). 5. antenna; 6. genitalia, right lateral view; 7. genitalia, left lateral view.