トドマツに寄生するキクイムシの越冬について(予報)

概要

論文の詳細を見る
Three species of bark beetles (Polygraphus proximus BLANDFORD, Cryphalus piceae RATZEBURG and C. piceus EGGERS) are commonly found attacking limbs and twig of weakened, injured, dying or recently killed Todo-fir (Abies Mayriana MIYABE et KUDO) in Hokkaido, Japan.The latter two species of the Genus Cryphalus are also frequentry found in Ezo-spruce (Picea jezoensis CARZ.).It was ussually considered that these beetles overwinter in the inner bark of killing trees or weakened or windthrown trees, or in freshly cut stump; mostly as adult, but also as larvae and pupae.Recently, the writer have found that the new adults of these species migrate to the trunk of the young todo-fir from September to October; and there they bore into the bark and hibernate until the ensuing June and July.
日本森林学会の論文
1954-05-25