Pennisetia marginata, the raspberry crown borer or blackberry clearwing borer, is a moth of the family Sesiidae.

It is widespread in the United States, mainly in the east and along the Pacific Coast, ranging north into the southern parts of Canada.

Adults are on wing from July to September and are active during the day.

They bore in the rootstock and root crowns of their host plant.

This article relating to the moth family Sesiidae is a stub.