Oak Leaf damage = Oak Gall Wasp egg cases?

Exactly what insect did this damage to these 2 southern oak leaves? I figure a wasp laid eggs inside the leaves, the larvae have already left. I've seen oak galls on stems in the north, but these leaves seem to have been infested by a different species.  [Click image to enlarge]

Any ideas of species?

Location: Miami Beach, FL, Bass Museum front lawn
Climate conditions: drought 4 months
Date: April 20, 2018