"It is conceivable that cherry-blossom viewing spots will disappear from Japan in several decades", Ryutaro Iwata, a professor of forest entomology at Nihon University, told the newspaper.
The ephemeral two-week season of the blossoms is a huge tourist draw, with more than 2 million enjoying the spectacle in March last year. That figure included a little over 20,000 arrivals from Britain, up nearly 13 percent on the same month in the previous year.
Experts warn that the beetles reproduce rapidly and have a preference for cherry and peach trees. The creatures grow up to 1.5 inches in length and bore into the trunk of the trees before emerging in the summer months.