Byctiscus ulmi is one of the main insect pests in Weeping Elm of Xining region. The insect pest is happened a generation in a year in Xining region. 14.8 ovums were borthed by a female pest.

• 榆叶象甲是西宁地区垂榆上的主要害虫之一；该虫在西宁地区每年发生一代；每头雌虫平均产卵量为14.；8粒；产卵部位集中于叶背；卵期8d左右；幼虫历期25d左右；老熟后在叶柄基部作茧化蛹；蛹期16d左右；从9月下旬起成虫在枯枝落叶层内进入越冬状态。