Furcantenna yangi Cheng

Cheng, Xin-Yue & Thompson, Christian, 2008, A generic conspectus of the Microdontinae (Diptera: Syrphidae) with the description of two new genera from Africa and China, Zootaxa 1879, pp. 21-48 : 29-30

Furcantenna yangi Cheng , sp. nov.

Male: Body broad and flat. Head obviously wider than thorax, black with strong violet shining. Vertex very high and protuberant, obviously distinguished from frons. Frons about as half width of head, parallel on both sides, with a large area on each side of frons barely and punctuated densely, divided from face clearly. Face slightly narrowed downwards, straight in lateral view. A broad and shiny longitudinal ridge at mid face, furnished a longitudinal sulcus on each side of it. Pile on head very short, but white and dense on face and occiput. Antenna set on a small brown sclerite in mid frons, brownish-black; scape moderate long, clavate, thicken apically; pedicel very small; basoflagellomere brown, especially long, furcate basally, with inner branch is straight, pole-like, slightly longer than outer one, with outer branch slightly curve, both branch densely, short yellowish-brown microtrichose. Arista absent.

Thorax. Scutum square, black except brownish laterally from postpronotum to postalar callus, with strong violet shine, very short black and white pilose. Scutellum small, shiny, concolorous with scutum, deeply sulcate at the middle of hind margin and divided it into two lobes. Pleuron brown except with shiny blackish-brown maculae on propleuron and anepisternum, long white pilose on anepisternum and katepisternum; halter pale yellow; calypter blackish brown.

Legs: femora with cicatrices on basal 1/4 distinct; tibiae slightly curve, thin on the base and thick on the end. Tarsi broad and short. Pro- and mesolegs reddish brown, but blackish brown and shining on the base of mesofemur, black pilose; metaleg brownish black except black on base of femur, with violet shine, black pilose except with intermixed pale pile on tibia. Pile on legs mainly black, mix with pale pili on metatibia. Wing: microtrichose, brown, darken on anterior half.

Abdomen. Terga black, except reddish brown on apex, with violet shiny, finely punctuate finely, short pale pilose except longer yellow pilose on apex; sterna black, yellow pilose.

Length: body, 9 mm; wing, 11 mm.

Female: Unknown.

Holotype: male, China: Guangxi (Oriental): Jinxiu: Dayaoshan, 14.VI.1982, collected by Yang Ji-kun. Type specimen deposited in the Institute of Zoology, Chinese Academy of Science, Beijing.

Etymology. The species is named in honor of its collector, Yang Ji-kun.