Bug FAQSonoran Sphinx
Ceratomia sonorensis · Order: Lepidoptera · Family: Sphingidae
Also called: Sonoran Sphinx Moth
The Sonoran sphinx has a wingspan of about 84 to 89 mm. It lives at high elevations in oak-pine woodlands of Sonora, Mexico and southeastern Arizona. Adults appear once a year, flying in July and August, and the caterpillars eat ash (Fraxinus) leaves.
Source: Wikipedia
Size
Wingspan ranges from 84 mm to 89 mm.
Source: Wikipedia
Where it lives
Found in high-altitude oak and oak-pine woodlands.
Source: Wikipedia
What it eats
Larvae feed on species of ash (Fraxinus).
Source: Wikipedia
Life cycle
There is one generation each year.
Source: Wikipedia
When you see it
Adults are on the wing from July through August.
Source: Wikipedia
Where it comes from
Native to the Madrean woodlands of Sonora, Mexico and southeastern Arizona, USA.
Source: Wikipedia
Where it is found in the US
Recorded in 5 of 51 states and DC. Most records: Michigan, Arizona, New Mexico, Texas, Wisconsin.
Darker = more records. Counts are museum and citizen-science records, not population size.
Source: GBIF
Months it is reported in the US
Source: GBIF
More photos
Questions people ask
When can I see adult Sonoran sphinx moths?
Adults are active during July and August.
Source: Wikipedia
Same family (Sphingidae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Ceratomia_sonorensis
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-28 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-28.