Knopper Gall (Andricus quercuscalicis) on Oak

This is the gall caused by the asexual generation of Andricus quercuscalicis on acorns. The wasp causing the gall is spreading through Britain from the south.
Order Hymenoptera
Family Cynipidae
16/8/2024
#insects
#biodiversity
#galls
#knopper
#gallwasp
#andricus
#oak
#quercus

[@soulfulgardeningyvihaan]

Absolutely fantastic 😊❤😊❤

[@philipwilkins]

Galls are fascinating 🤔😎

[@garimadeepaksharma]

Disease of oak 😮

[@philipwilkins]

Though it doesn't seem to do a lot of harm to the tree 🌲