Bug FAQTerloo Sphinx
Proserpinus terlooii · Order: Lepidoptera · Family: Sphingidae
Also called: Terloo's Sphinx, Terloo Sphinx Moth
The Terloo sphinx has a wingspan of about 42 to 48 mm. It lives from southern Arizona into Sonora, Mexico. Its caterpillars eat Boerhavia plants such as B. coccinea and B. coulteri.
Source: Wikipedia
Size
Wingspan ranges from 42 to 48 mm.
Source: Wikipedia
Where it lives
Found from southern Arizona down to Sonora in Mexico.
Source: Wikipedia
What it eats
Larvae feed on species of the plant genus Boerhavia, including B. coccinea and B. coulteri.
Source: Wikipedia
Life cycle
There is one generation each year, with adults on the wing in July and August.
Source: Wikipedia
Where it comes from
Its native range includes southern Arizona and Sonora, Mexico.
Source: Wikipedia
Where it is found in the US
Recorded in 2 of 51 states and DC. Most records: Arizona, Colorado.
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
Same family (Sphingidae)
Sources
- Wikipedia: https://en.wikipedia.org/wiki/Proserpinus_terlooi
Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia
Text written 2026-10-27 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-27.