probably Q. durata x Q. lobata hybrid. (Is there a name for this? If not, perhaps Q. dubata? Q. lorata? Q. dubia?)
Looks like it was time for the aphids to emerge from their galls, first time I've seen the actual aphids (assuming that the insects are actually Manzanita Leafgall Aphids, please correct me if wrong).
Many winged ones crawling and sometimes flitting around the Manzanita leaves, even more shed exoskeletons attached to leaves. They're tiny, and constantly moving, hard to photograph clearly with or without a macro lens.
This particular poor Manzanita is loaded with galls, to the point where I wouldn't be surprised if they're actually problematic.
There's a related observation for the live aphids, which may or may not be Tamalia galucensis: https://www.inaturalist.org/observations/181501422