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首页> 外文期刊>Zoological Journal of the Linnean Society >Analysis of non-morphometric morphological characters used in the taxonomy of the genus Pseudechiniscus (Tardigrada: Echiniscidae)
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Analysis of non-morphometric morphological characters used in the taxonomy of the genus Pseudechiniscus (Tardigrada: Echiniscidae)

机译：PseudeChiniscus的分类学中使用的非形态学形态特征（Tardigrada：Echiniscidae）分析

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摘要

Pseudechiniscus, the second-largest genus of the family Echiniscidae (Tardigrada: Heterotardigrada: Echiniscoidea), is notoriously difficult for taxonomic studies. In this study, I performed a morphological analysis of a new species from Croatia, based on a light microscopic and scanning electron microscopic examination of 45 specimens from the same sample. Furthermore, I have summarized all available data on Pseudechiniscus species, including their original descriptions, and have analysed the following complexes of morphological characters: (1) arrangement and morphology of dorsal cuticular plates, (2) ventral sculpture, (3) morphology of cephalic, trunk and leg sensory organs and (4) claw morphology. The applicability of these characters in the taxonomy and their distribution in the genus are discussed. Some of the characters traditionally used for species delimitation were shown to be unsuitable and others in need of a thorough reinvestigation. The meaning of the old term `faceted', commonly used but often misapplied, has been clarified, based on the initial definition. Several characters of the claw structure were suggested as potentially useful for species delimitation. The taxonomic status of several old forms and species was discussed.
机译：PseudeChiniscus，The Family Echiniscidae的第二大属（Tardigrada：Heterotardigrada：Echiniscoidea），对分类学研究难以难以困难。在这项研究中，基于来自同一样品的45个标本的光学微观和扫描电子显微镜检查，对来自克罗地亚的新物种进行了形态学分析。此外，我已经总结了伪心物种上的所有可用数据，包括其原始描述，并分析了以下形态特征的复杂性：（1）背心板的排列和形态，（2）腹侧雕塑，（3）头部的形态，树干和腿部感觉器官和（4）爪形态。讨论了这些人物在分类物中的适用性及其在属中的分布。传统上用于物种划界的一些角色被证明是不合适的，其他有需要彻底重新调查的人。基于初始定义，已经阐明了旧术语“刻录”，常用但经常误认的含义。建议爪结构的几个特征潜在可用于物种界定。讨论了几种旧形式和物种的分类系统。

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