Emerald ash borer (Agrilus planipennis Fairmaire, 1888) was found on common and Pennsylvania ash trees in the streets of Pyatigorsk and in forest belts in its immediate vicinity. Judging by the number of infested ash trees with exit holes in the lower part of trunks, foci of mass reproduction of the pest have been active in the city for at least 5 years.
Yu.N. Baranchikov, V.I. Ponomarev