Key to species of Chrysomydas 1 Labellum about 1.1x longer than wide; T2–T5 long golden setulose; scutum with distinct lateral white and golden posterior pruinose spots; male cerci partially covered by epandrial lamellae, with distal process of gonocoxite-hypandrial complex with roundish dorsal tip and acute ventral tip............................................................ C. nitidulus - Labellum about 1.7x longer than wide; T2–T5 long black setulose; scutum without distinct pruinose spots; male cerci exposed, uncovered by the epandrial lamellae; distal process of gonocoxite-hypandrial complex with both dorsal and ventral tips acute..................................................................................... C. phoenix sp. nov.

Published as part of Calhau, Julia, Lima, Sheila, Rafael, José Albertino & Lamas, Carlos José Einicker, 2019, A taxonomic synopsis of Chrysomydas Wilcox, Papavero & Pimentel (Diptera: Mydidae: Mydinae), with first bionomic records for the genus and description of a new species from Brazil, pp. 103-114 in Zootaxa 4664 (1) on page 111, DOI: 10.11646/zootaxa.4664.1.4, http://zenodo.org/record/3383562