Franck's Sphinx

Sphinx franckii, or Franck's sphinx moth is a moth in the family Sphingidae. The species was first described by Berthold Neumoegen in 1893. It is known from lowland deciduous woodland in the eastern United States but also suburban areas where lilacs (Syringa species) are planted, ranging from New York to northern Florida east to Missouri and Louisiana.

The wingspan is 100–128 mm. There is one generation in the north with adults on wing from late June to early July. In the south, there may be a partial second generation with adults on wing from August to September. Adults most frequently nectar from phlox (Phlox paniculata and cultivars). However, males will occasionally gather over moist charcoal to obtain nutrients from the charred wood prior to copulation. Adults fly at dusk and in the early morning hours.