biostudies-literatureZhang XThe Chinese ZoologyOpen Project Fund of Key Laboratory of Ministry of Educatione18345https://www.ebi.ac.uk/biostudies/studies/S-EPMC11529593biostudies-literatureUnknown12<i>Allantus luctifer</i> is one of the most serious pests of buckwheat, with its larvae mainly damaging leaves during the seedling and flowering stages. Entomogenous fungi play a crucial role as biological regulators of arthropod populations in nature. In this paper, a newly isolated strain 19GZAl-1, was identified as <i>Cordyceps. cateniannulata</i> through the observetions of macroscopic and microscopic morphological features, and the results of rDNA- ITS sequence alignment and phylogenetic analysis. By comparing the efficacy of ten entomopathogenic fungal strains, including six strains of <i>C. cateniannulata</i> and four other <i>Cordyceps</i> species, against <i>A. luctifer</i> larvae, the new strain 19GZAl-1 exhibited the highest mortality rate. Mortality rates of <i>A. luctifer</i> PeerJ<i>Cordyceps cateniannulata</i>, a new potential strain for controlling <i>Allantus luctifer</i> from China.PMC11529593QianJiaoHeKYZi[2020]246700214181125Peng XYang GChen QZhang XJin DLiu CWu Yfalse<i>Cordyceps cateniannulata</i>, a new potential strain for controlling <i>Allantus luctifer</i> from China.<i>Allantus luctifer</i> is one of the most serious pests of buckwheat, with its larvae mainly damaging leaves during the seedling and flowering stages. Entomogenous fungi play a crucial role as biological regulators of arthropod populations in nature. In this paper, a newly isolated strain 19GZAl-1, was identified as <i>Cordyceps. cateniannulata</i> through the observetions of macroscopic and microscopic morphological features, and the results of rDNA- ITS sequence alignment and phylogenetic analysis. By comparing the efficacy of ten entomopathogenic fungal strains, including six strains of <i>C. cateniannulata</i> and four other <i>Cordyceps</i> species, against <i>A. luctifer</i> larvae, the new strain 19GZAl-1 exhibited the highest mortality rate. Mortality rates of <i>A. luctifer</i> 2024-01-01T00:00:00Z20242026-05-27T12:12:17.291Z2025-04-04T00:29:12.61ZS-EPMC115295933949430210.7717/peerj.18345