Artichoke Gall (Cavenham Heath NR)

Artichoke galls contain the single larva of the gall wasp Andricus fecundator. The larva lives inside a smaller hard casing inside the artichoke and this is released in autumn. The asexual wasp emerges in spring and lays her eggs in the oak catkins. These develop into small oval galls which produce the sexual generation of wasps.