Up close and personal with a hummingbird clearwing moth . . .

A Nessus Sphinx Moth with wings in constant motion uses its prominent proboscis to get a little nectar from a Dame's Rocket flower. Their wings are covered in scales (like all Lepidoptera) and over time they lose many of these scales from patches on their wings; so they are called clearwing hummingbird moths. As this was taken in May, my guess is that not many scales had fallen off so the wings are not yet clearwing.