Big Poplar Sphinx

Subject: moths
Location: South West New Mexico
June 25, 2016 12:10 pm
What is this large (about 6″, 15.24cm across) moth?
Signature: Susana Murphy

Big Poplar Sphinx
Big Poplar Sphinx

Dear Susana,
This lovely moth is most likely a Big Poplar Sphinx,
Pachysphinx occidentalis, based on images posted to the Sphingidae of the Americas site, though we would not rule out that it might be the closely related Modest Sphinx, Pachysphinx modesta, also pictured on Sphingidae of the Americas and also found in New Mexico.

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