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

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, Phasmongen. nov., is established for P. typhlopssp. nov., which is only the second blind cave c...

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Autores principales: Huang, Chao, Ahyong, Shane T., Shih, Hsi-Te
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Pensoft Publishers 2020
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7790807/
https://www.ncbi.nlm.nih.gov/pubmed/33505185
http://dx.doi.org/10.3897/zookeys.1008.58854
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author Huang, Chao
Ahyong, Shane T.
Shih, Hsi-Te
author_facet Huang, Chao
Ahyong, Shane T.
Shih, Hsi-Te
author_sort Huang, Chao
collection PubMed
description 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, Phasmongen. nov., is established for P. typhlopssp. nov., 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 Phasmon 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.
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spelling pubmed-77908072021-01-26 The second known stygomorphic freshwater crab from China, Phasmon typhlops gen. nov. et sp. nov. (Crustacea, Decapoda, Potamidae), diverged at the beginning of the Late Miocene Huang, Chao Ahyong, Shane T. Shih, Hsi-Te Zookeys Research Article 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, Phasmongen. nov., is established for P. typhlopssp. nov., 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 Phasmon 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. Pensoft Publishers 2020-12-31 /pmc/articles/PMC7790807/ /pubmed/33505185 http://dx.doi.org/10.3897/zookeys.1008.58854 Text en Chao Huang, Shane T. Ahyong, Hsi-Te Shih http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Huang, Chao
Ahyong, Shane T.
Shih, Hsi-Te
The second known stygomorphic freshwater crab from China, Phasmon typhlops gen. nov. et sp. nov. (Crustacea, Decapoda, Potamidae), diverged at the beginning of the Late Miocene
title The second known stygomorphic freshwater crab from China, Phasmon typhlops gen. nov. et sp. nov. (Crustacea, Decapoda, Potamidae), diverged at the beginning of the Late Miocene
title_full The second known stygomorphic freshwater crab from China, Phasmon typhlops gen. nov. et sp. nov. (Crustacea, Decapoda, Potamidae), diverged at the beginning of the Late Miocene
title_fullStr The second known stygomorphic freshwater crab from China, Phasmon typhlops gen. nov. et sp. nov. (Crustacea, Decapoda, Potamidae), diverged at the beginning of the Late Miocene
title_full_unstemmed The second known stygomorphic freshwater crab from China, Phasmon typhlops gen. nov. et sp. nov. (Crustacea, Decapoda, Potamidae), diverged at the beginning of the Late Miocene
title_short The second known stygomorphic freshwater crab from China, Phasmon typhlops gen. nov. et sp. nov. (Crustacea, Decapoda, Potamidae), diverged at the beginning of the Late Miocene
title_sort second known stygomorphic freshwater crab from china, phasmon typhlops gen. nov. et sp. nov. (crustacea, decapoda, potamidae), diverged at the beginning of the late miocene
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7790807/
https://www.ncbi.nlm.nih.gov/pubmed/33505185
http://dx.doi.org/10.3897/zookeys.1008.58854
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