Ptychoptera wangae, Kang, Zehui, Yao, Gang & Yang, Ding, 2013

Kang, Zehui, Yao, Gang & Yang, Ding, 2013, Five new species of Ptychoptera Meigen with a key to species from China (Diptera: Ptychopteridae), Zootaxa 3682 (4), pp. 541-555 : 551-554

Ptychoptera wangae sp. nov.

( Figs. 27–33 )

Diagnosis. Pronotum and mesoscutum black; scutellum and postnotum yellow brown; mesopleuron uniformly yellow brown. Abdominal 1st to 4th segments mostly yellow, posterior margins of 1st to 4th terga brown, 5th to 9th terga dark brown; 6th to 8th sterna dark brown. Posterior projections of epadrium finger-like, slender and straight apically.

Description. Male. Body length 8.0 mm, wing length 9.0 mm. Head mostly dark brown except frons yellow, with uniformly short black hairs. Compound eyes black without pubescence. Antenna mostly dark brown except scape, pedicel and basal 1/8 of first flagellomere yellow; antenna with uniformly black hairs. Proboscis yellow with black hairs; palpus mostly yellow, last two segments infuscate, with black hairs.

Thoracic pronotum and mesoscutum black; scutellum and postnotum yellow brown; mesopleuron uniformly yellow. Scutellum with dense patches of hairs on anterior margin. Coxae and trochanters uniformly yellow; femora yellow at base, dark brown apically; tibiae dark brown; tarsomeres dark brown; claws dark brown. Hairs on legs black. Relative length of 1st to 5th tarsomeres in hindleg as 10: 8: 1.5: 1: 1. Wing ( Fig. 28 ) 3.8 times as long as wide, subhyaline; wing marked with four brown clouds along basal of R2, R3, r-m and m-cu; veins brown; venation: Sc ending in C at level of basal 1/3 of R2+3; Rs shorter than R4+5, about 5 times as long as r-m. Haltere brown; prehaltere yellow brown.

Abdomen: 1st to 4th segments mostly yellow, posterior margins of 1st to 4th terga brown, 5th to 9th terga dark brown; 6th to 8th sterna dark brown. Hairs on abdomen black. Male genitalia ( Figs. 29–32 ): Epandrium with a pair of posterior projections, each projection finger-like, broad basally, slender and straight apically; posterior margins of epandrium with long dense black hairs, basal part of each projection with a bunch of long dense hairs laterally. Hypandrium broad when viewed laterally, upper part of posterior margin concave, lower part of posterior margin round, with long dense hairs; when viewed ventrally, main part bilobated, each roughly semicircular, with two branches apically; medial part with tapered sclerite. Gonocoxite swollen ventrally. Gonostylus with a semicircular lobe basally, clothed with very short black hairs; medially with a hook-like branch, broad basally, pointed apically, with uniform black hairs; apically with a finger-like projection, curved medially, round apically, with uniform black hairs. Paramere long, borad medially, hook-like apically.

Female. Body length 9.0 mm, wing length 10.5 mm. Resembling male. Terminalia ( Fig. 33 ): Cercus bladelike, 2.5 times as long as 8th sternum, 8th sternum 2 times as long as 7th sternum.

Type material. HOLOTYPE: 3, CHINA, Yunnan, Xiaozhongdian, Hongshanlinchang, 3279 m, 2012. VI.12, Yuyu Wang. PARATYPES: 53 2ƤƤ, same data as holotype.

Distribution. China (Yunnan).

Etymology. The specific name refers to the collector Yuyu Wang.

Remarks. This new species is somewhat similar to P. clitellaria Alexander , but can be easily separated from it by the wings without marked cloud on the fork of vein M. In P. clitellaria Alexander , a marked cloud is located on the fork of vein M ( Alexander 1935).

Figures

FIGURES 27 – 28. Ptychoptera wangae sp. nov. (male). 27. Habitus of male, lateral view; 28. Wing. Scale bar: 2.0 mm.

FIGURES 29 – 33. Ptychoptera wangae sp. nov. 29. Male Genitalia, lateral view; 30. Epandrium, dorsal view; 31. Gonocoxite and gonostylus, dorsal view; 32. Hypandrium, ventral view; 33. Female Terminalia, lateral view. Scale bar: 0.25 mm.