中国森林病虫2025，Vol.44Issue(3)：32-36,5.DOI:10.19688/j.cnki.issn1671-0886.20240044
青海云杉重要蛀干害虫云杉四眼小蠹研究初报
Preliminary study on the important trunk-boring pest of Picea crassifolia,Polygraphus polygraphus
摘要
Abstract
To effectively prevent and control Polygraphus polygraphus,the trunk-boring pest that seriously damages Picea crassifolia,the morphological characteristics,bionomics,spatial ecological niche and natural enemies of P.polygraphus were studied through investigation in forest and rearing observation indoor in the Xianmi forest area of Menyuan.The results showed that the body length and width of the female were significantly larger than those of the male,and the slope of elytra of the female was gentler than that of the male;The notch grooves of the female had obvious round,shallow and large notches,while the notches of male were sparse and shallow;In lateral view,the pronotum of the male was flatter than that of the female.P.polygraphus had one generation a year in the Xianmi forest area,and overwintered as larvae.Pupation began in early June,and the peak period of pupation was in mid-late June.The eclosion began in early July,and the peak period of eclosion was in mid-late July.The average longevity of females and males were(25.31±4.12)days and(15.24±4.43)days,respectively.P.polygraphus distributed throughout the tree trunk,and caused great damage to P.crassifolia with different heights and diameter classes,occupying a wide spatial ecological niche in vertical heights and horizontal diameter classes.The natural enemies mainly include Thanasimus substriatus and Thanasimus lewisi,both adults and larvae can prey on P.polygraphus.关键词
云杉四眼小蠹/青海云杉/生物学特性/形态特征Key words
Polygraphus polygraphus/Picea crassifolia/bionomics/morphological characteristics分类
林学引用本文复制引用
胡岳,徐炜超,魏志成,李敏,张忠朝,刘友林..青海云杉重要蛀干害虫云杉四眼小蠹研究初报[J].中国森林病虫,2025,44(3):32-36,5.基金项目
青海门源县仙米林区昆虫多样性调查项目"门源县仙米林区昆虫多样性调查及重大林业害虫综合防治技术研究"(2023-036) （2023-036）
