Flavizona Huo

Huo, Ke-Ke & Shi, Fu-Min, 2010, Flavizona Huo, a new genus of Syrphini from China, with a key to genera of Syrphini in China, Zootaxa 2428, pp. 47-54 : 50-51

Flavizona Huo , gen. nov.

Type species: Flavizona dolichostigma Huo , sp. nov.

Eye densely dark long pilose, holoptic in male, but dichoptic in female. Face subcarinate, extended obliquely downwards and forward, with small, indistinct medial tubercle, and shiny, black medial vitta and lateral vittae. Occiput narrower dorsally, gradually broadened downwards laterally. Antenna black, basoflagellomere nearly as long as basal two segments together, about twice as long as wide, apex broadly rounded. Arista black with microscopic pubescence. Thorax longer than wide, black, thinly gray pollinose, in anterior portion of scutum with a pair of distinct gray medial vittae extending beyond transverse suture. Thoracic pile yellowish brown (in male) to nearly whitish (in female). Scutellum black, but yellow brown apically, especially so in female, pile long, yellowish brown. Metasternum bare. The pile patches on katepisternum broadly separated posteriorly. Metacoxa lacks a pile tuft at posteromedial apical angle. Wing entirely microtrichose, hyaline, in middle portion without dark brown macula. Vein r4+5 straight, joined with m 1 in a right angle. Vein r-m located before middle of cell DM. Pterostigma brownish black, long, extending from apex of vein sc to apex of vein r1+2. Abdomen lacks premarginal sulcus, elongately oval, parallel-sided, from tergum 4 backward tapering. Abdominal terga of 1, 2 and basal third of tergum 3 yellowish orange, the rest black, pile of similar color to background.

Discussion: In appearance the new genus is extremely similar to Leucozona Schiner, 1860 . Their eyes densely long dark pilose, face bearing lustrous black medial vitta and lateral vittae. Abdomen black, but light on terga 1, 2 and basal third of tergum 3. The new genus can easily be distinguished from the latter by small, indistinct facial tubercle, wing without dark brown macula medially, and elongate oval abdomen without premarginal sulcus.

Etymology: The new name is derived from the Latin words flav- (yellow) and zona (waistband), referring to abdomen in light color basally. Gender is feminine.