Management of the chestnut gall wasp

• Prophylaxis
  Avoid importing contaminated plants from regions at risk

• Biological control
  A parasitoid of the cankerworm is Torymus sinensis, a wasp that is a natural predator of Dryocosmus kuriphilus. This parasitoid infects the larvae and eggs of the pest and thus regulates the population of the cankerworm.