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The freshwater crabs of Macau, with the description of a new species of Nanhaipotamon Bott, 1968 and the redescription of Nanhaipotamon wupingense Cheng, Yang, Zhong & Li, 2003 (Crustacea, Decapoda, Potamidae)
Authors
Chao Huang1,2,3, Kai Chin Wong4, Shane T. Ahyong1,2 1 Palaeontology, Geobiology and Earth Archives Research Centre, School of Biological, Earth and Environmen- tal Sciences, University of New South Wales, Kensington, NSW 2052, Australia 2 Australian Museum, 1 Wil- liam St, Sydney NSW 2010, Australia 3 School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China 4 Macao Civic and Municipal Afairs Bureau, Macao SAR, China Corresponding author: Shane T. Ahyong (shane.ahyong@austmus.gov.au) Academic editor:S.DeGrave | Received21October2018 | Accepted26November 2018 | Published20December2018 http://zoobank.org/2A23FBC5-0BFD-4665-8FDB-12CF86E8FCC3 Citation: Huang C, Wong KC, Ahyong ST (2018) Te freshwater crabs of Macau, with the description of a new species of Nanhaipotamon Bott, 1968 and the redescription of Nanhaipotamon wupingense Cheng, Yang, Zhong & Li, 2003 (Crustacea, Decapoda, Potamidae). ZooKeys 810: 91–111. https://doi.org/10.3897/zookeys.810.30726
Figure 2.Te freshwater crabs of Macau, colour in life. Nanhaipotamon macau sp. n., male (29.0 × 24.2 mm), SYSBM 001654 (A); Nanhaipotamon guangdongense Dai, 1997, male (35.9 × 28.8 mm), SYSBM 001645 (B); Cantopotamon hengqinense Huang, Ahyong & Shih, 2017, male, specimen not collected (C); Somanniathelphusa zanklon Ng & Dudgeon, 1992, photographed in Zhuhai, specimen not collected (D).
Abstract
Four species of freshwater crabs from three genera and two families (Cantopotamon hengqinense Huang, Ahyong & Shih, 2017, Nanhaipotamon guangdongense Dai, 1997, Nanhaipotamon macau sp. n., and Somanniathelphusa zanklon Ng & Dudgeon, 1992) are documented from Macau for the frst time. One new species, Nanhaipotamon macau sp. n., is described. Te large fap on the male frst gonopod terminal segment sets it apart from all other known congeners except N. wupingense Cheng, Yang, Zhong & Li, 2003, from Fujian. Characters of the carapace, male frst gonopod and size, however, clearly diferentiate these two species. Preliminary genetic studies also suggest that the two are not closely related. A neotype is designated for N. wupingense. Te taxonomic status of Nanhaipotamon guangdongense is also discussed. Notes on the general biology and conservation status of these crabs are also included.
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