重要林业害虫－栗苞蚜（同翅目，根瘤蚜科）的形态特征及其危害

Moritziella castaneivora Miyazaki, 1966 is a newly reported pest on Castanea crenata and C. mollissimain in China (Shandong, Liaoning and Zhejinag Provinces). It harms chestnuts on the flowers and fruits and makes them falling off before mature, which leads to large economic damage. Morphological descriptions, features, host plants, distributions and pictures are provided here. Specimens studied are deposited in Zoology Museum, Instituted of Zoology, Chinese Academy of Sciences, China. Also this paper preliminarily reports the biology and control of the species based on the survey in Shandong.