Quercus serrata trees have died for a disease that the beetle Platypus quercivorus transmits. It came to be observed for these past two or three years.
July 2016, Takarazuka, Hyogo, Japan
July 2016, in the Kabutoyama forest park, Nishinomiya, Hyogo, Japan
Holes made by Platypus quercivorus, July 2016, in the hill forest area, Takarazuka
March 2017
Wood dust made by Platypus quercivorus, July 2016, in the hill forest area, Takarazuka
This tree died last summer. July 2016, in Takarazuka
Yellow ribbon around the dead tree to be cut. March 2017. In Takarazuka
March 2017. In Takarazuka
A year after. June 2017
Quercus serrata コナラ
Quercus acuta tree died アカガシのナラ枯れ被害
