Oak marble gall (Andricus kollari)

Oak marble gall (Andricus kollari)

Observation - Oak marble gall (Andricus kollari) - UK and Ireland. Description: This has been sitting on my desk for a while now. There was no exit hole. I eventually cut it open but there was no obvious occupant in spite of the clear space for it. Interesting radial structure to the gall.

This has been sitting on my desk for a while now. There was no exit hole. I eventually cut it open but there was no obvious occupant in spite of the clear space for it. Interesting radial structure to the gall.