Hello,
I have been working on gall morphology in phylloxerids and it got me thinking about their parasitoids. I know that some wasps can manage to oviposit through aphid galls, but I don't know any parasitoids that are known to attack galls of Phylloxeridae (probably because we know almost nothing about that family's ecology, Grape phylloxera aside).
Has anyone ever encountered parasitoids of phylloxerids in the field or know of a paper on the subject? I really appreciate any help you can provide!