[Objective] A new entomogenous fungi (GZUIFR-lgs-1),which was parasitic on grub larvae was identified and described.[Methods] The analysis mainly based on phenotypic characteristics and molecular phylogeny.[Results] The strain distinguished from the other Hirsutella species by phialides solitary,hyaline,occasionally proliferation and near right angle to hyphae,with distinctly swollen and verrucose base (19-27) μm×(2.7-3.6) μm,twisting in helices at the apex,neck (12.0-14.5) μm long;Conidia hyaline and smooth in mucous sheath,like orange segments (4.8-6.0) μm×(2.4-3.6) μm,single or occasionally in pairs.The result of phylogenic analysis based on ITS loci supported the morphological identification.[Conclusion] The specimen GZUIFR-lgs-1 is a new species in the genus Hirsutella,supported by the phenotypic traits and molecular analysis,named Hirsutella leigongshanensis.%[目的]对寄生鞘翅目幼虫蛴螬的虫生真菌标本GZUIFR-lgs-1进行描述和鉴定.[方法]基于形态特征比较结合系统发育分析进行鉴定.[结果]该种通过形态特征产孢细胞单生,透明,多数与营养菌丝成近直角,基部具疣且明显膨大(19-27) μm×(2.7-3.6) μm,颈部长(12.0-14.5) μm,顶端呈螺旋状扭曲,偶有再育;分生孢子透明、光滑,橘瓣状,单生或偶有双生,外具黏液,大小为(4.8-6.0) μm×(2.4-3.6)μm,而与被毛孢属已知种相区别.基于ITS位点的系统发育分析支持形态学鉴定的结果.[结论]综合形态特征比较及系统发育分析结果,该种为被毛孢属的一个新的分类单元,命名为雷公山被毛孢,Hirsutella leigongshanensis.
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