Enyo lugubris, the mournful sphinx, is a moth of the family Sphingidae. It is found from Argentina and Paraguay to Uruguay, Venezuela, Guyana, Surinam, French Guiana, Colombia, Ecuador, Peru, Brazil and the West Indies through Belize, Guatemala, Honduras, El Salvador, Nicaragua, Costa Rica and Panama to Mexico and the United States, where it has been recorded from Arizona east to Florida and north to South Carolina. Strays have been recorded from Arkansas, north to Illinois, Michigan and New York.