Phassus excrescens has one generation a year in Harbin and infests middle part of trunk and rootstock of poplar and willow seedlings.

• 单位：黑龙江省五常市森林病虫害防治检疫站黑龙江五常150200;黑龙江省五常市森林病虫害防治检疫站黑龙江五常150200;