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.