Jumping Bean Gall

Pseudoneuroterus saliens

The asexual reproduction of a Gall Wasp on Turkey Oak occurs in autumn, affecting young shoots, mid-ribs, or leaf petioles. Each gall measures 3-4mm in length and houses a single larva. These galls transition in colour from lemon yellow to red. Upon maturing, they drop to the ground and can sometimes be observed jumping. The term 'Saliens' is derived from Latin, meaning 'jumping.' Adult wasps emerge in spring to lay eggs on flowers, which subsequently produce Anemone galls.