Shelley James J, Delaval AurÉlien, Feuvre Matthew C le
School of BioSciences, University of Melbourne, Victoria 3010, Australia Ichthyology, Sciences Department, Museum Victoria, Victoria 3001, Australia.
Zootaxa. 2017 Dec 21;4367(1):1-103. doi: 10.11646/zootaxa.4367.1.1.
The systematics of the genus Syncomistes Vari, 1978 endemic to freshwater habitats of remote northwestern Australia, is reviewed in light of recent collections in the region and a fine scale molecular study of the group that identified new taxa. Based primarily on external morphology, seven taxa are described as new: Syncomistes bonapartensis sp. nov., S. carcharus sp. nov., S. dilliensis sp. nov., S. holsworthi sp. nov., S. moranensis sp. nov., S. wunambal sp. nov. and S. versicolor sp. nov. The species complexes Syncomistes butleri Vari, 1978 and S. trigonicus Vari, 1978 are resolved and redescribed, and S. kimberleyensis Vari, 1978 and S. rastellus Vari Hutchins, 1978 are redescribed based on juvenile and adult specimens. Finally, a neotype is provided for S. trigonicus sensu stricto in place of the destroyed holotype. Meristic and morphometric data are collected and analysed for the entire genus. Syncomistes have a broad range of meristic and morphometric character differences between species, and juveniles and adults, as well as variations in colour. The head, particularly feeding structures such as the jaw and dentition, were found to be the most important morphological features in discriminating between taxa. Some characters undergo distinct ontogenetic shifts in form, which are discussed. Of note, four of the new species, and seven from the entire genus, are narrow-range endemics, each found in single river systems, and are thus of conservation concern.
根据澳大利亚西北部偏远地区的最新采集样本以及对该类群进行的精细分子研究（该研究鉴定出了新的分类单元），对1978年发现的、分布于澳大利亚西北部偏远地区淡水栖息地的Syncomistes属的分类学进行了综述。主要基于外部形态学，描述了7个新分类单元：邦纳帕特Syncomistes bonapartensis新种、卡查鲁斯Syncomistes carcharus新种、迪利恩西斯Syncomistes dilliensis新种、霍尔sworthi Syncomistes holsworthi新种、莫拉嫩西斯Syncomistes moranensis新种、伍南巴尔Syncomistes wunambal新种和杂色Syncomistes versicolor新种。对1978年的巴特勒Syncomistes butleri物种复合体和1978年的三角Syncomistes trigonicus物种复合体进行了解析和重新描述，并根据幼体和成体标本对1978年的金伯利Syncomistes kimberleyensis和1978年哈钦斯的拉斯特勒斯Syncomistes rastellus进行了重新描述。最后，为狭义的三角Syncomistes trigonicus提供了一个新模标本，以取代已毁坏的正模标本。收集并分析了整个属的可数性状和形态测量数据。Syncomistes属的物种之间、幼体与成体之间在可数性状和形态测量特征上存在广泛差异，颜色也有变化。发现头部，特别是诸如颌骨和齿列等取食结构，是区分不同分类单元的最重要形态特征。一些性状在形态上经历了明显的个体发育变化，并对此进行了讨论。值得注意的是，新物种中有4个，整个属中有7个是窄域特有种，每个都只在单一河流系统中发现，因此具有保护意义。
