小蠹前胸背板缘毛超微结构研究  

The Study of Ultrastructure of Setae on Pronotal End of Barkbeetles(Curculionidae:Scolytinae)

作　　者：王新国 王俊峰 李凯兵 邓雪华 华展义 江志海 Wang Xinguo;Wang Junfeng;Li Kaibing;Deng Xuehua;Hua Zhanyi;Jiang Zhihai(Technology Center of Huangpu Customs,Dongguan Guangdong 523129,China;Technology Center of Nanhai Customs,Foshan Guangdong 528225,China)

机构地区：[1]黄埔海关技术中心,广东东莞523129 [2]南海海关技术中心,广东佛山528225

出　　处：《西南林业大学学报（自然科学）》2023年第4期109-121,共13页Journal of Southwest Forestry University：Natural Sciences

基　　金：海关总署科技计划项目(2019HK037)资助;广东出入境检验检疫局科技计划项目(2017GDK69)资助。

摘　　要：为了研究小蠹超微结构的分类价值,分析了53种小蠹和象甲总科的另外6种昆虫前胸背板缘毛的超微结构。结果表明:在细小蠹属和齿小蠹属各6种、材小蠹属5种、瘤小蠹属3种都表现出属内明显相似、种间互有区别的特性,推测这些缘毛结构可以作为小蠹形态分类的有效特征。象甲总科另外6种各有不同,甘薯小象甲缘毛缺失;咖啡豆象为单分支;松瘤象为多分支;褐纹甘蔗象为掌状;中对长小蠹和兴慈长小蠹为二分支状,类似于材小蠹族。在对所有14族28属53种小蠹和象甲总科其他6种昆虫的缘毛超微结构系统分析之后,发现这些缘毛具有从无到有、从掌状到双叉状、从复杂到简单的进化趋势。本研究表明,小蠹前胸背板缘毛超微结构可作为一种有效的形态分类特征,并具有一定的进化学研究意义。In order to explore the taxonomic value of the ultrastructure of bark beetles,the ultrastructure of seta on pronotal end in 53 species of bark beetles(Scolytinae:Curculionidae)and other 6 species beetles of Curculionoidae was analysed in this study.The analysis showed obvious similarity within the genus and interspecific difference among 6 species of Pityophthorus and Ips,5 species of Xyleborus,3 species of Orthotomicus respectively.It was inferred that these marginal seta could be available character in classifying these bark beetles.The ultrastructures of seta of other 6 species beetles of Curculionoidae are different:those of Cylas formicarius are absent,Araecetus fasciculatus single,Sipalus gigas multi-branched,Rhabdoscelus obscurus palmate,Euplatypus parallehus and Euplatypus hintzi bifurcated,similar to that of Scolytini.In addition,it was discovered that it had an evolutionary trend which these seta on pronotal end were from none to appear,palmate to bifurcated form,complex to simple,after systematic analysis of the microstructure of marginal setae of 53 species of bark beetles belong to 28 genera in 14 tribes of subfamily Scolytinae and 6 other species of Curculionoidae.The results show that the ultrastructure of seta on pronotal end can be used as an available feature in bark beetles classification and has certain evolutionary research significance.

关 键 词：小蠹 超微结构 前胸背板缘毛 分类 特征 

分 类 号：Q964[生物学—昆虫学] Q969.514