Ceratomia sonorensis, the Sonoran sphinx, is a moth of the family Sphingidae. It is known from high altitudes in oak and oak-pine associations in Madrean woodland in Sonora, Mexico and in south-eastern Arizona.
The wingspan is 84âÂÂ89 mm.
There is one generation per year with adults on wing from July to August.
The larvae feed on Fraxinus species.