Big Poplar Sphinx or Modest Sphinx???

Subject: Moth
Location: Bend Oregon
July 13, 2017 1:03 pm
Found this giant outside my apartment this morning. Thinking it may be a hawk moth, but not sure.
Signature: Ashley N

Big Poplar Sphinx or Modest Sphinx

Dear Ashley,
Based on images on the Sphingidae of the Americas site, we believe this is a Big Poplar Sphinx,
Pachysphinx occidentalis, one of the Hawkmoths, but since their ranges overlap in Oregon, we would not rule out that this might be the Modest Sphinx, Pachysphinx modesta, which is also pictured on Sphingidae of the Americas.

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