Chromatopterum Becker 1910

Key to world species of genus Chromatopterum Becker (modified from Deeming 1981) 1. Wing hyaline with a fuscous costal band ending in an apical spot (Figs 1, 2, 10, 11)................................. 2 - Wing fuscous with small hyaline areas towards its base........................................................7 2. Scutum black or brown with black stripes.................................................................. 3 - Scutum yellow with black stripes.........................................................................6 3. Scutum entirely black; halter entirely black or only knob of halter ivory white.....................................4 - Scutum brown with black stripes almost indistinct; halter entirely pale yellow......................................5 4. Scutellum entirely black; knob of halter ivory white.—Afrotropical (Kenya, Ruanda, Zair)..... .. C. delicatum Becker, 1910 - Scutellum black except for dark yellow centrally on disc and apically; halter entirely black.—Afrotropical (Nigeria).................................................................................... C. dimidiatum Deeming, 1981 5. Femora yellow except for middle 1/2 of fore femur brown; apical spot of wing separated by a narrow space from apex of costal band in marginal cell.—Oriental (China: Hainan, Yunnan)................................. .. C. brevicercum sp. nov. - Femora brown except for distal portions yellow; apical spot of wing separated by a wide space from apex of costal band in marginal cell.—Oriental (China: Yunnan).............................................. C. longiclavatum sp. nov. 6. Ocellar triangle yellow except for anterior portion reddish with a black ocellar spot; scutellum entirely yellow.—New Guinea (PNG)......................................................................... C. pubescens Becker, 1911 - Ocellar triangle black except for posterolateral sides narrowly yellow; scutellum blackish brown except for brownish yellow posterodorsally.—Oriental (Borneo Sabah, Java, Krakatau).................. C. nusantarum Kanmiya et Yukawa, 1985 7. Scutellum black.—Afrotropical (Ghana)........................................... C. ghanaensis Deeming, 1981 - Scutellum largely yellow or ivory white....................................................................8 8. Face ivory white; scutellum conical.—Afrotropical (Nigeria)............................ .. C. mirabilis Deeming, 1981 - Face dark; scutellum short and convex on disc...............................................................9 9. Fore coxa bright yellow.—Afrotropical (Uganda, Cameroun)............................ C. suffusum Sabrosky, 1951 - Fore coxa black.—Afrotropical (Ivory Coast, Nigeria)................................... C. linguatum Séguy, 1957 Published as part of Liu, Xiaoyan, Nartshuk, Emilia P. & Yang, Ding, 2017, Chromatopterum (Diptera, Chloropidae), a newly recorded genus from China, and description of two new species, pp. 279-286 in Zootaxa 4306 (2) on page 280, DOI: 10.11646/zootaxa.4306.2.8, zenodo.org