Cicada killer visits magnolia scale (possibly tuliptree scale) for the honeydew (free energy source)

Scoliid wasps visiting flower for nectar and are frequently found flying over areas of turf looking for Green June beetle larvae to parasitize.  Neither wasp is aggressive or likely to sting unless handled; thus treatments are seldom warranted.  All photos provided by:  Brian Kunkel, Ornamentals IPM Extension Specialist, University of Delaware