Leptinotarsa decemlineata in forests
In the USSR it has been reported that Leptinotarsa decemlineata (EPPO A2 pest) can increasingly be found in forests.
In 1988 Colorado beetles were observed mating on grasses in forest glades. The emigration of the Colorado beetle into the forests is explained by the practice of burning off the tops of potato plants and mass emergences of beetles due to favourable weather conditions.
Sources
Kulik, A.V.; Timoshin, A.A. (1989) The Colorado beetle in the forest.
Zashchita Rastenii No. 6, 43.