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A new genus and new species of Potamidea (Crustacea: Decapoda: Brachyura: Potamoidae), the first stygomorphic cave crab known from China and East Asia

CHAO HUANG, HSI-TE SHIH, PETER K. L. NG

Abstract


A new genus and species of freshwater crab, Diyutamon cereum n. gen., n. sp., is described from a cave in Guizhou, China. This is the first record of a true stygomorphic crab from China and East Asia, possessing pale body coloration, strongly reduced eyes, and long ambulatory legs. While superficially similar to Chinapotamon Dai & Naiyanetr, 1994, and Tiwaripotamon Bott, 1970, the new genus possesses a diagnostic combination of carapace, ambulatory leg, thoracic sternal, and male abdominal characters that easily distinguishes it from other genera. Molecular data derived from the mitochondrial 16S rDNA supports the establishment of the new genus.

 


Keywords


Crustacea, Diyutamon cereum, new genus, new species, caves, stygobite, 16S rDNA

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References


Chapman, P. (1982) The origin of troglobites. Proceedings of the University of Bristol Speleological Society, 16, 133–141.

Chen, G.-X. & Zhang, C.-G. (2002) A new species of Chinapotamon from Tiankeng Cave, Guangxi, China. In: Celebrating the Twentieth Anniversary of the Founding of Chinese Crustacean Society and Congratulations to the Society President, Academician Liu Ruiyu (J. Y. Liu) for His Successful Oceanographic Research for Fifty-five Years. The Chinese Crustacean Society and the Institute of Oceanology, Chinese Academy of Sciences, Qingdao, pp. 20.

Chia, O.K. & Ng, P.K.L. (2006) The freshwater crabs of Sulawesi, with descriptions of two new genera and four new species (Crustacea: Decapoda: Brachyura: Parathelphusidae). Raffles Bulletin of Zoology, 54, 381–428.

Cumberlidge, N., Ng, P.K.L., Yeo, D.C.J., Naruse, T., Meyer, K.S. & Esser, L.J. (2011) Diversity, endemism, and conservation of the freshwater crabs of China (Brachyura: Potamidae and Gecarcinucidae). Integrative Zoology, 6, 45–55.
https://doi.org/10.1111/j.1749-4877.2010.00228.x

Dai, A.-Y. (1999) Fauna Sinica. Arthropoda: Crustacea: Malacostraca: Decapoda: Parathelphusidae, Potamidae. Science Press, Beijing, 501 pp, 30 pls.

Guinot, D. (1988) Les crabes cavernicoles du monde. Mémoires de Biospéologie, 15, 3–40.

Guinot, D. (1994) Decapoda Brachyura. In: Juberthie, C. & Decou, V. (Eds.), Encyclopaedia Biospeologica. Tome 1. Société de Biospéologie, CNRS, Moulis, Ariége, & Académie Roumaine, Bucarest, pp. 165–179, pl. 3.

Holthuis, L.B. (1986) Decapoda. In: Botosaneanu, L. (Ed.), Stygofauna Mundi. A Faunistic, Distributional, and Ecological Synthesis of the World Fauna Inhabiting Subterranean Waters (Including the Marine Interstitial). E. J. Brill, Leiden, pp. 589–615.

Huang, C., Shih, H.-T. & Mao, S.Y. (2016) Yuebeipotamon calciatile, a new genus and new species of freshwater crab (Crustacea: Decapoda: Brachyura: Potamidae) from southern China. ZooKeys, 615, 61–72.
https://doi.org/10.3897/zookeys.615.9964

ICZN [International Commission on Zoological Nomenclature) (1999) International Code of Zoological Nomenclature. International Commission of Zoological Nomenclature. 4th Edition. Adopted by the XXI General Assembly of the International Union of Biological Sciences. International Trust for Zoological Nomenclature, in association with the British Museum (Natural History), London, 338 pp.

Kimura, M. (1980) A simple method for estimating evolutionary rates of base substitutions through comparative studies of nucleotide sequences. Journal of Molecular Evolution, 16, 111–120.
https://doi.org/10.1007/BF01731581

Klaus, S., Mendoza, J.C.E., Liew, J.H., Plath, M., Meier, R. & Yeo, D.C.J. (2013) Rapid evolution of troglomorphic characters suggests selection rather than neutral mutation as a driver of eye reduction in cave crabs. Biology Letters, 2013, 9, 20121098. https://doi.org/10.1098/rsbl.2012.1098.

Li, X.-Z. (2001) Evolution of karst geomorphology of Upper-Cenozoic and its influential factors in Guizhou Plateau. Guizhou Geology, 18, 29–36. [in Chinese]

Li, Z.-F. (2011) Division of karst landform in Guizhou. Guizhou Geology, 28, 177–181, 234. [in Chinese]

Liu, H. & Zhou, Y. (2011) Characteristics of the cave development in the Shilin Area. In: Knez, M., Liu, H. & Slabe, T. (Ed.), South China Karst II. Ljubljana, Postojna, pp. 99–109.

Ng, N.K. & Dai, A.-Y. (1997) Sinopotamon baiyanense, a new species of cavernicolous potamid crab (Crustacea: Decapoda: Brachyura: Potamidae) from Southern China. Raffles Bulletin of Zoology, 45, 139–144.

Ng P.K.L. (2013) Stygothelphusa cranbrooki, a new species of cave crab from Gua Sireh, Sarawak, Malaysia (Crustacea: Decapoda: Brachyura: Gecarcinucidae). Raffles Bulletin of Zoology, 29 (Supplement), 91–97.

Ng, P.K.L. & Goh, R. (1987) Cavernicolous freshwater crabs (Crustacea Decapoda, Brachyura) from Sabah, Borneo. Stygologia, 3, 313–330.

Ng, P.K.L. & Guinot, D. (2014) A new cavernicolous species of crab of the genus Balssiathelphusa Bott, 1969 (Crustacea, Brachyura, Gecarcinucidae) from eastern Borneo. Zoosystema, 36, 623–629.
https://doi.org/10.5252/z2014n3a4

Ng, P.K.L. & Sket, B. (1996) The freshwater crab fauna (Crustacea: Brachyura) of the Philippines. IV. On a collection of Parathelphusidae from Bohol. Proceedings of the Biological Society of Washington, 109, 695–706.

Ng, P.K.L. & Trontelj, P. (1996) Daipotamon minos, a new genus and species of potamid crab (Crustacea, Decapoda, Brachyura) from a cave in China. Proceedings of the Biological Society of Washington, 109, 476–481.

Rambaut, A. & Drummond, A.J. (2009) Tracer, version 1.5. Available from: http://beast.bio.ed.ac.uk/Tracer (accessed 10 January 2017)

Ronquist, F., Huelsenbeck, J.P. & van der Mark, P. (2005) MrBayes, version 3.1. http://mrbayes.csit.fsu.edu/manual.php

Ronquist, F., Teslenko, M., van der Mark, P., Ayres, D., Darling, A., Höhna, S., Larget, B., Liu, L., Suchard, M.A. & Huelsenbeck, J.P. (2012) MRBAYES 3.2: efficient Bayesian phylogenetic inference and model choice across a large model space. Systematic Biology, 61, 539–542.
https://doi.org/10.1093/sysbio/sys029

Schubart, C.D. (2009) Mitochondrial DNA and decapod phylogenies: the importance of pseudogenes and primer optimization. Decapod Crustacean Phylogenetics. Crustacean Issues, 18, 47–65.
https://doi.org/10.1201/9781420092592-c4

Schubart, C.D. & Ng, P.K.L. (2008) A new molluscivore crab from Lake Poso confirms multiple colonization of ancient lakes in Sulawesi by freshwater crabs (Decapoda: Brachyura). Zoological Journal of the Linnean Society, 154, 211–221.
https://doi.org/10.1111/j.1096-3642.2008.00441.x

Schubart, C.D., Reimer, J. & Diesel, R. (1998) Morphological and molecular evidence for a new endemic freshwater crab, Sesarma ayatum sp. n., (Grapsidae, Sesarminae) from eastern Jamaica. Zoologica Scripta, 27, 373–380.
https://doi.org/10.1111/j.1463-6409.1998.tb00468.x

Shih, H.-T. & Do, V.T. (2014) A new species of Tiwaripotamon Bott, 1970, from northern Vietnam, with notes on T. vietnamicum (Dang & Ho, 2002) and T. edostilus Ng & Yeo, 2001 (Crustacea, Brachyura, Potamidae). Zootaxa, 3764 (1), 26–38.
https://doi.org/10.11646/zootaxa.3764.1.2

Shih, H.-T., Huang, C. & Ng, P.K.L. (2016a) A re-appraisal of the widely-distributed freshwater crab genus Sinopotamon Bott, 1967, from China, with establishment of a new genus (Crustacea: Decapoda: Potamidae). Zootaxa, 4138 (2), 309–331.
https://doi.org/10.11646/zootaxa.4138.2.5

Shih, H.-T. & Ng, P.K.L. (2011) Diversity and biogeography of freshwater crabs (Crustacea: Brachyura: Potamidae, Gecarcinucidae) from East Asia. Systematics and Biodiversity, 9, 1–16.
https://doi.org/10.1080/14772000.2011.554457

Shih, H.-T., Ng, P.K.L., Davie, P.J.F., Schubart, C.D., Türkay, M., Naderloo, R., Jones, D. & Liu, M.-Y. (2016b) Systematics of the family Ocypodidae Rafinesque, 1815 (Crustacea: Brachyura), based on phylogenetic relationships, with a reorganization of subfamily rankings and a review of the taxonomic status of Uca Leach, 1814, sensu lato and its subgenera. Raffles Bulletin of Zoology, 64, 139–175.

Shih, H.-T., Yeo, D.C.J. & Ng, P.K.L. (2009) The collision of the Indian Plate with Asia: molecular evidence for its impact on the phylogeny of freshwater crabs (Brachyura: Potamidae). Journal of Biogeography, 36, 703–719.
https://doi.org/10.1111/j.1365-2699.2008.02024.x

Tamura, K., Peterson, D., Peterson, N., Stecher, G., Nei, M. & Kumar, S. (2011) MEGA5: Molecular Evolutionary Genetics Analysis using maximum likelihood, evolutionary distance, and maximum parsimony methods. Molecular Biology and Evolution, 28, 2731–2739.
https://doi.org/10.1093/molbev/msr121

Thompson, J.D., Higgins, D.G. & Gibson, T.J. (1994) CLUSTAL W: improving the sensitivity of progressive multiple sequence alignment through sequence weighting, position-specific gap penalties and weight matrix choice. Nucleic Acids Research, 22, 4673–4680.
https://doi.org/10.1093/nar/22.22.4673

Xiong, K.-N., Qin, Q.-W., Zhang, H.-G. & Liu, J. (1997) Morphometry and speleogenesis of Shiliping Area, Panxian County. Acta Anthropologica Sinica, 16, 247–253. [in Chinese]

Yeo, D.C.J. & Ng, P.K.L. (2004) Recognition of two subfamilies in the Potamidae Ortmann, 1896 (Brachyura, Potamidae) with a note on the genus Potamon Savigny, 1816. Crustaceana, 76, 1219–1235.
https://doi.org/10.1163/156854003773123456

Zhang, J.-Y. (1989) Preliminary study on the topography and sediment characteristics of the Taiwan Strait and adjacent area. Studia Marina Sinica, 30, 1–17. [in Chinese]




DOI: http://dx.doi.org/10.11646/zootaxa.4232.1.5

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