An Asian wasp that threatens the UK’s sweet chestnuts has been designated a high-priority tree pest for the first time.
The oriental chestnut gall wasp (Dryocosmus kuriphilus) was first found in the UK last year, in Farningham woods near Sevenoaks in Kent, and a street in St Albans in Hertfordshire.
The Guardian: Asian wasp listed as threat to UK's sweet chestnut trees
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