Body is dark brown with a wide white stripe across the abdomen.
Wings are dark brown.
Forewing upperside has a black spot at the end of the cell and 2 bands of translucent white spots. Hindwing upperside has pale patches along the costa and inner margin. The Titan sphinx is a strong flier. Caterpillars pupate in loose cocoons within shallow underground burrows. Several broods throughout the year in the Florida Keys, one brood from June-October elsewhere.