黄斑星天牛和光肩星天牛的数值分类研究(鞘翅目:天牛科)

本文选取不同地区的黄斑星天牛Anoplophora nobilis(Ganglbauer)、光肩星天牛A. glabripennis(Motsch ulsky)及类似的有代表性的雄性个体作为分类单位(OUT),利用27个性状,分别进行了不同相似性系数基础上的UPGMA法及等价类的模糊聚类法Q型分析,R型聚类分析,也进行了主成分分析研究,结果是一致的.A. nobilis及分布于北方的A. glabripennis不仅在表型图上形成差异很大的两类元,而且在成虫、雄性外生殖器和幼虫上都存在系列特征差异,认为是两个不同的物种,种级相似性系数水平在四个Q分类结果中分别是1.75、1.38、0.15和0.77.以四川为分布中心的A. glabripennis和西北的相比达到种级水平,表现出系列特征差异,认为它们可能是两个不同的物种.

A NUMERICAL TAXONOMIC STUDY OF ANOPLOPHORA NOBILIS (GANGLBAUER) AND A. GLABRIPENN1S (MOTSCHULSKY) (COLEOPTERA: CERAMBYCIDAE)

In this papar, 42 male specimens of A. nobilis and A. glabripennis, from different districts for OTU were studied by means of numerical taxonomic methods, Among 27 characters, sixteen are quantitative and eleven are qualitative. The principal component analysis and the similarity coefficients'were computed on the standardized data. Based on the square, of mean Euclidian distance matrix, mean Euclidian distance matrix and the correlation matrix respectively, the Q cluster analysis was also performed. UPGMA was used in both Q and R cluster analysis. Fuzzy clustering method was used too.The 'dendrograms of each Q clustering method are similar. All OTU was divided into 5 groups. From the results of the R cluster analysis, all characters could divided into 4 sets: A, B, C and D(Fig. 1), and the PCA were shown no difference with those of Q cluster analysis. A. nobilis and A. glabripennis distributed in Northwest and North China and propealed great difference in the phenograms and in the characters of the male adults, of the male genitalia and of the larval. Thus, the author inclined to support the view of dividing them into two independent species. Taxonomic rank level of species was 1.75, 1.38,. 0.15 and 0.77 respectively. Comparing with the typical specimen of A. glabripennis from North China, those from Sichuan Province showned degree of dissimilarity to species rank level. They were considered to be a new species.