First, the cedar bark beetle.

首先是杉皮甲虫假说。

As with the mountain bark beetle, it is not entirely clear why this is happening.

至于山地树皮甲虫，现不完全清楚为什么会发生这种虫害役情。

One hypothesis is that the yellow cedar decline may be caused by insect parasites, specifically the cedar bark beetle.

其中一个假说认为黄杉数量下降是由以衫皮甲虫为代表的寄生害虫导致。

Decaying wood is a highly suitable habitat for insects such as the spruce bark beetle, which in large Numbers can damage live, healthy spruce trees.

腐烂的木头同时也是昆虫很好的栖息地，比如杉皮甲虫。大量的杉皮甲虫会对健康生长的杉树造成损害。

During a recent survey of fungi associated with bark beetle in Qinling Mountains of China, a new species was isolated, and the aim of this study was to describe this fungus.

报道了与危害中国秦岭华山松的华山松大小蠹相关的真菌新种，描述了其有性阶段和无性阶段的形态特征。研究标本保存于西北农林科技大学。