Monday, July 20, 2009

Still another Large Moth came a Calling!


Pachysphinx modesta

Pachysphinx modesta, the Poplar Sphinx or Modest Sphinx ranges through southern portions of all Canadian provinces and is found in the eastern half of the U.S. from Maine to northern Florida. James P. Tuttle has range maps showing it as far west as eastern Washington southward to extreme northeastern New Mexico. Most of the western specimens appear to be P. occidentalis, and I would not be surprised if there is some natural hybridization in the western states.
-Bill Oehlke



Family: Sphingidae, Latreille, 1802
Subfamily: Sphinginae, Latreille, 1802
Tribe: Smerinthini, Grote & Robinson, 1865
Genus: Pachysphinx Rothschild and Jordan, 1903
Species: modesta (Harris, 1839)


The Poplar Sphynx or Modest Sphinx has a wingspan of 10-12 cm. Larvae feed on poplar and willow trees. Adults are active at night. These moths are among the fastest fliers of all moths.

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