Smerinthinae
Guides
Pachysphinx
Pachysphinx is a genus of sphinx moths (Sphingidae) established by Rothschild and Jordan in 1903. The genus comprises three recognized species distributed in North America: P. modesta (big poplar sphinx), P. occidentalis (western poplar sphinx), and P. peninsularis. Adults are nocturnal and attracted to light sources. Larvae feed on poplar and willow species (Salicaceae).