Found on a Dogwood (Cornus florida) flower. Captured and posed, measured. I made a specimen of it for anatomic detail shots. Identification confirmed by Slater's key (1). One characteristic of the key for the genus shown here is:

• fourth segment of antenna longer than head

This is a common insect, but we have not had the detailed shots to date to verify the genus. North Carolina State University Entomology lists two species for this state, spinosus and wickhami, both quite common, so this is likely one or the other of those. I believe characters of male genitalia have to be used to differentiate them. Some of these are illustrated by Slater, but they don't match what I see on this specimen--it may be a female.