Current pest situation evaluated by EPPO on the basis of information dated
1994: Present, few occurrences From CABI Disease map 791 (2009): Present, few occurrences
References
* Siggeirsson, E. I.; Riel, H. R. van (1975) Rannsoknastofnunin Nedri As, Hveragerdi, Island Skyrsla No. 20, 32 pp.