Diacme mopsalis, the mopsalis diacme moth, is a moth in the family Crambidae. It was described by Francis Walker in 1859. It is found in South America (including Venezuela), Central America, the Antilles (including Cuba, Jamaica, the Bahamas)[1] and the southern United States, where it has been recorded from Arizona, Florida, Oklahoma and Texas.
Adults have been recorded year round in Florida.