通辽市科尔沁区两种豆科作物访花甲虫物种多样性研究

A Study on Species Diversity of Flower-visiting Beetles from Two Leguminous Crops in Horchin District of Tongliao City

为了调查通辽市科尔沁区苜蓿和大豆两种作物田中访花甲虫物种多样性.利用扫网法并结合文献资料,对访花甲虫进行标本采集,整理和鉴定,对其物种多样性组成和发生数量进行统计、比较和分析.结果表明,科尔沁区苜蓿和大豆田访花甲虫共7科17属26种.以瓢甲科物种最多(5属8种),其次为丽金龟科(2属6种),花金龟科、天牛科和象甲科物种最少(均1属1种).大猿叶甲等5种甲虫仅在大豆田发生;苜蓿多节天牛等9种甲虫仅在苜蓿田发生;龟纹瓢虫等11种为大豆和苜蓿共有访花甲虫.从发生数量看,苜蓿和大豆田访花甲虫中均以双斑长跗萤叶甲最多.对科尔沁区两种豆科作物田中访花甲虫物种多样性的研究可为后续研究通辽地区豆科作物传粉昆虫提供参考.

The species diversity of flower-visiting beetles in alfalfa and soybean fields in the Horchin district of Tongliao City was investigated.Specimens were collected using net sweeping,sorted and identified.The species diversity composition and occurrence of flower-visiting beetles were compared and analyzed.The results showed that there were 26 species of flower-visiting beetles belonging to 17 genera and 7 families.Among these,beetles within the Coccinellidae were the most diverse(5 genera 8 species),followed by those within Rutelidae(2 genera 6 species),while those within Cetoniidae,Cerambycidae and Curculionidae were the least diverse(1 genus and 1 species).Five species including Colaphellus bowringi Baly occurred only in soybean fields.Nine species,including Agapantha amurensis Kraatz occurred only in alfalfa.There were 11 species of flower-visiting beetles,such as Propylaea japonica(Thunberg),which were common species to soybean and alfalfa.In terms of occurrence,Monolepta hieroglyphica(Motschulsky)was the most prevalent.These findings provide a reference for the further study of legume pollinators in the Tongliao area.