The willowherb hawkmoth (Proserpinus proserpina) is a moth in the family Sphingidae. The species was first described by Peter Simon Pallas in 1772.
It is found in Armenia, Austria, Azerbaijan, Belgium, Bulgaria, Denmark, France, Germany, Greece, Hungary, Iran, Iraq, Israel, Italy, Kazakhstan, Lebanon, Morocco, Netherlands, Portugal, Poland Spain, Switzerland, Syria, Turkey, Turkmenistan, Ukraine, Uzbekistan, and Bosnia and Herzegovina.
The larvae feed on Epilobium (including Epilobium hirsutum), Oenothera and Lythrum species.