The Structure and Diversity of Insect Community in Artemisia argyi Fields in Nanyang

LI Haolei; HUANG Xianzhang; CUI Jianxin; YU Yi

doi:10.15933/j.cnki.1004-3268.2025.02.011

Abstract：In order to clarify the main insect community structure of Artemisia argyi fields,the insects were collected by the sweep nets and the community structure and diversity analyses were carried out after classification and identification.The results showed that a total of 70 579 individuals of insect pests and their natural enemies were collected in the summer and autumn seasons from the field of A.argyi,belonging to six orders,Hymenoptera,Coleoptera,Hemiptera,Neuroptera,Mantodea,and Orthoptera,with a total 32 families.The dominant pest communities were Cicadellidae,Aphididae,Lygaeidae,Chrysomelidae and Latridiidae.The dominant natural enemies of these insect pest communities were Braconidae,Miridae and Coccinellidae.For crops of A.argyi harvested 3-4 times annually,the insect species-richness(e.g.Margalef richness index)and diversity(e.g.Shannon diversity index)of mowed A.argyi field were high in summer and gradually decreased in autumn,while for the similar insect communities of unmowed A.argyi field both two above mentioned indexes were low.The dominant insect pest of unmowed A.argyi field was a leafhopper Austroasca mitjaevi,which began to outbreak in late June and lasted until late August.The outbreak of A.mitjaevi in mowed A.argyi field began in mid-to-late July and lasted until late August;The dominant species of aphid pest was Macrosiphoniella yomogifoliae,which began to break out in mid-to-late July and lasted until early August.In general,mowed A.argyi field had a certain clear effect on delaying the outbreak of A.mitjaevi,and the degree of aphid damage in unmowed A.argyi field was less than that of mowed field.