Abstract

Grass flies of the genus Meromyza have been grouped by the COI mtDNA locus into several clusters, which corresponds to the morphological characteristics of the anterior processes of postgonites (APs) in the male genital apparatus. In the present study, the strategies of changes in the form of APs that have developed during the evolution of the group have been investigated. To study the ways of transformation of the AP form in 24 species from seven clusters, the AP contours of evolutionarily younger species were compared with species close to the ancestral haplotypes of the group. Three groups of species have been revealed. The approach of applying the phylogenetic tree (MrBayes program) to the results of geometric morphometry (MorphoJ program) has been used. Three areas corresponding to the previously found species groups and the area of the species close to the ancestral haplotypes have been identified. The comparison of the results of the applied methods show common microevolutionary directions in the transformation of the AP form associated with transformation of its projecting part (PAP).

中文翻译：

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草蝇属（双翅目、叶蝇科）进化过程中后鞭虫形态的变化趋势

摘要

属草飞Meromyza由已分组COImtDNA 基因座分成几个簇，这对应于男性生殖器后生殖器 (APs) 前突的形态特征。在本研究中，研究了在群体演变过程中发展起来的 AP 形式变化的策略。为了研究来自 7 个集群的 24 个物种的 AP 形式的转化方式，将进化较年轻物种的 AP 轮廓与接近该组祖先单倍型的物种进行了比较。已经揭示了三组物种。已经使用了将系统发育树（MrBayes 程序）应用于几何形态测量（MorphoJ 程序）结果的方法。与先前发现的物种组相对应的三个区域和接近祖先单倍型的物种区域已被确定。