Distribution details in Japan (Hokkaido)
EPPO Reporting Service (2010/080) : Ophiostoma ulmi and O. novo-ulmi detected for the first time in 2007 on bark of fallen Ulmus davidiana and U. laciniata trees infested by Scolytus esuriens (Coleoptera: Scolytidae) at two sites in Hokkaido.
* Masuya H, Brasier C, Ichihara Y, Kubono T, Kanzaki N (2009) First report of the Dutch elm disease pathogens Ophiostoma ulmi and O. novo-ulmi in Japan. New Disease Reports Volume 20 (2009-09 to 2010-01). http://www.bspp.org.uk/publications/new-disease-reports/ndr.php?id=020006