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中国已知的第二种喜穴居淡水蟹,新属及新种(甲壳纲,十足目,溪蟹科),在晚中新世初期分化。

The second known stygomorphic freshwater crab from China, gen. nov. et sp. nov. (Crustacea, Decapoda, Potamidae), diverged at the beginning of the Late Miocene.

作者信息

Huang Chao, Ahyong Shane T, Shih Hsi-Te

机构信息

Unaffiliated, Guangdong, China Unaffiliated Guangdong China.

Australian Museum, 1 William St, Sydney NSW 2010, Australia Australian Museum Sydney Australia.

出版信息

Zookeys. 2020 Dec 31;1008:1-15. doi: 10.3897/zookeys.1008.58854. eCollection 2020.

Abstract

A new genus and new species of blind freshwater cave crab are described from Chongzuo City, Guangxi Zhuang Autonomous Region, China based on morphology and mitochondrial 16S rDNA sequences. The new genus, , is established for , which is only the second blind cave crab known from China and East Asia. The combination of a very wide carapace, overall depigmentation, reduced orbits and vestigial unpigmented eyes of immediately separates it from all known potamid genera. Molecular divergence estimates based on 16S rDNA suggest that the lineage to which the new genus belongs diverged from other potamids at the beginning of the Late Miocene (10.8 million years ago), much earlier than other Chinese cave crabs.

摘要

基于形态学和线粒体16S rDNA序列,在中国广西壮族自治区崇左市描述了一种新的盲淡水洞穴蟹属和新物种。新属 是为 建立的,它是中国和东亚已知的第二种盲洞穴蟹。 的甲壳非常宽、全身色素脱失、眼眶缩小以及残留无色素眼睛的组合使其立即与所有已知的溪蟹属区分开来。基于16S rDNA的分子分歧估计表明,新属所属的谱系在晚中新世初期(1080万年前)与其他溪蟹分道扬镳,比其他中国洞穴蟹早得多。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9141/7790807/387de1db62bd/zookeys-1008-001-g001.jpg

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