Flame Shoulder (Ochropleura plecta)
It is only about 1/2" long and is very distinctive because of the metallic copper-coloured flashes along the outside edges of the fore wings.
There are two broods of flying adults each year, one is about now until June and then the second brood will be on the wing between August and September.
Particularly fond of Ragwort for its nectar source the larvae live on plantains, docks and groundsels. They over winter as a pupae.