Ash sphinx moth vs Waved sphinx moth

The ash sphinx is the hawkmoth species Manduca jasminearum, a member of the family Sphingidae described by Guérin in 1832. It is a large gray to grayish-brown moth of eastern and central parts of the United States, associated with wooded habitats containing ash trees. Its caterpillars feed mainly on ash (Fraxinus) and develop a characteristic tail horn, while adults visit flowers for nectar. Relia...

The waved sphinx moth, Ceratomia undulosa, is a species of hawk moth in the family Sphingidae. It is native to eastern North America and occurs across regions east of the Rocky Mountains. Adults are nocturnal moths with patterned wings, while the caterpillars feed on foliage of woody plants, especially ash and related host plants. The species is studied as part of North American moth and pollinato...