The RTB adults were also able to over-winter under the bark of P. tabulaeformis stocks in some areas of southern Shanxi, Henan, Hebei and Shaanxi Provinces.

• 在山西、河北和河南、陕西的北部部分发生区，油松伐木树皮下也是红脂大小蠹的重要越冬场所之一，红脂大小蠹成虫还可以转主为害。