青海天然针叶林区11种常见小蠹及其坑道特征识别

Identification of 11 species of bark beetles and their galleries in natural coniferous forests in Qinghai province

近几年小蠹在青海省天然针叶林区内,尤其是隆务河流域危害较重。要及时控制小蠹在青海省以云杉为主的天然针叶林内发生危害蔓延的趋势,搞清小蠹虫优势危害种、生活习性、危害特点、形态识别特征等尤为重要。小蠹虫体型较小,种、属特征很难区分。作者利用11种小蠹虫的形态特征、产卵方式、坑道特征、坑道内雌雄比、危害特点、危害树种等规律性特征区分小蠹虫种类,在实践当中尤为适用。

Bark beetles caused very serious damage in the natural coniferous forests in Qinghai pro vince,especially in the native spruce forests of Longwuhe Valley. It was essential to make clear the dominant species of bark beetles,their life habit,damage characteristics and morphological identification for the control of the damage caused by the bark beetles. Eleven species of dominant bark beetles were identified and differentiated by morphological characteristics,oviposition habit,gallery characteristics,sex ratio in galleries,damage and the infested tree species for the application in the practice.