Ceratomia undulosa (Walker, 1856)
Status: Occasional resident
Larval Hostplant(s): Primarily Ashes (Fraxinus) and Oaks (Quercus) but also Hawthorn (Crataegus) and Lilac (Syringa)
Range: Found most frequently in the eastern United States with scattered records from the Rocky Mountains. Absent from the West Coast states.
NENHP Ranking: Not listed
Broods/Flight Times: Likely double-brooded with good numbers found from May through August.
Habitat: Near hostplants, often in wooded areas.
Avg. Wingspan: 3 – 4 1/4 Inches
Found at: Indian Cave State Park, Homestead National Monument, Fontenelle Forest, Niobrara Valley Preserve, Gilbert-Baker SWMA, Wildcat Hills SRA, Rowe Sanctuary, Box Elder SWMA, Happy Jack Chalk Mine, Harlan County Reservoir, Kinters Fprd SWMA, Willow Creek SRA.
Overwintering: As pupae in leaf litter or in the soil.
Similar Species: On the Catalpa Sphinx the spot on the FW is smaller and light brown, lines on the HW are indistinct and not serrate and the FW ground color is less contrasting (more concolorous).