Dryocosmus kuriphilus (Oriental chestnut gall wasp)
Symptoms Top of page Galls are unilocular or multilocular, 5-20 mm in diameter, green or rose-coloured, often containing portions of developing leaves, stems and petioles. They develop on young twigs, on leaf petioles or on the midrib of the leaves. After adult emergence, the gall dries, becomes wood-like, and remains attached to the tree for up to 2 years.
DA: 2 PA: 4 MOZ Rank: 94