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Many exotic pine species are planted in Europe. These pines are tested for resistance to ozone, sulfur dioxide, drought and frost. However, their resistance can be reduced by bark beetles. In Poland the bark beetles Pityophthorus pityographus and Pityophthorus lichtensteinii were detected on Pinus armandi and Pinus ×schwerinii pines. In Europe these are the first findings of bark beetles on these trees and, at the same time, new host plants for these bark beetles. [ABSTRACT FROM AUTHOR]

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