Abstract
A new genus and new species of freshwater crab is described from Yunnan Province, China. Proboscimon keeae gen. n., sp. n. belongs to a group of Chinese genera that lack a flagellum on the exopod of the third maxilliped. Of these, it is superficially most similar to Arquatopotamon Chu, Zhou & Sun, 2017 from Yunnan, but is distinguished from it and other genera mainly by the form of its male first pleopod as well as characters of the carapace, thoracic sternum, and male sternopleonal cavity.
References
- Alcock, A. (1909) Diagnoses of new species and varieties of freshwater crabs. Nos. 1–3. Records of the Indian Museum, 3, 243–353. https://doi.org/10.26515/rzsi/v3/i3/1909/163275
- Chen, G. & Chang, J. (1982) A new species of Parapotamon from China. Acta Zootaxonomica Sinica, 7 (1), 43–45. [in Chinese with English summary]
- Chu, K., Zhou, L. & Sun, H. (2017) A new genus and new species of freshwater crab (Decapoda: Brachyura: Potamidae Ortmann, 1896) from Yunnan Province, China. Zootaxa, 4286 (2), 241–253. https://doi.org/10.11646/zootaxa.4286.2.7
- Chu, K., Wang, P. & Sun, H. (2018) A new genus and species of primary freshwater crab and a new species of Artopotamon Dai & Chen, 1985 (Crustacea, Brachyura, Potamidae) from western Yunnan, China. Zootaxa, 4422 (1), 115–131. https://doi.org/10.11646/zootaxa.4422.1.7
- Dai, A.Y. (1990) New taxa and distribution of freshwater crabs in Northwest region of China. From water to land, 1990, 375–385, pl. 1 figs. 1–10. [in Chinese]
- Dai, A.Y. (1999) Fauna Sinica (Arthropoda. Crustacea. Malacostraca. Decapoda. Parathelphusidae. Potamidae). Science Press, Beijing, 501 pp., 30 pls. [in Chinese with English summary]
- Dai, A.Y. & Cai, Y. (1998) Freshwater crabs of Xishuangbanna, Yunnan Province, China (Malacostraca: Crustacea: Parathelphusidae, Potamidae). Acta Zootaxonomica Sinica, 23 (3), 245–251. [in Chinese with English summary]
- Dai, A.Y. & Chen, G.X. (1985) A preliminary report on the freshwater crabs of Hengduan Mountains Area. Sinozoologica, 3, 39–72, pls. 1 + 2. [in Chinese with English summary]
- Dai, A.Y., Chen, G.X., Liu, J.B., Luo, X.R., Yi, D.Y., Liu, Z.H., Gu, G.Q. & Liu, C.H. (1990) A study of freshwater crabs of Sichuan Province. Acta Zootaxonomica Sinica, 15 (3), 282–297, pl. 1. [in Chinese with English summary]
- Davie, P.J.F., Guinot, D. & Ng, P.K.L. (2015) Anatomy and functional morphology. In: Castro, P., Davie, P.J.F., Guinot, D., Schram, F.R. & von Vaupel Klein, J.C. (Eds.), Treatise on zoology – anatomy, taxonomy, biology. The Crustacea. Vol. 9C–I. Brill. Leiden, pp. 11–163. https://doi.org/10.1163/9789004190832_004
- Huang, C., Wang, J. & Shih, H.-T. (2020a) A new genus and two new species of freshwater crab (Crustacea: Brachyura: Potamidae) with unusual coiled tip of male second gonopods from Yunnan, Southwestern China. Zoological Studies, 59, e24. https://doi.org/10.6620/ZS.2020.59-24
- Huang, C., Shih, H.-T. & Ahyong, S.T. (2020b) The freshwater crab genus Lacunipotamon Dai, Song, He, Cao, Xu & Zhong, 1975 (Decapoda, Bachyura, Potamidae), with descriptions of two new species from Southwestern China. Crustaceana, 93, 1361–1379. https://doi.org/10.1163/15685403-bja10067
- Ji, W.Z. (Ed.) (1999) Wildlife in Yunnan. Chinese Forestry Publishing House, Beijing, 227 pp.
- Lyu, Y., Zhang, Z., Pan, D. & Sun, H. (2020) One new record of Indochinamon khinpyae in China (Decapoda: Potamidae: Indochinamon). Sichuan Journal of Zoology, 39, 671–675 [in Chinese with English abstract]
- Mitra, S., Pati, S.K. & Ng, P.K.L. (2021) Abormon, a new genus of freshwater crab (Brachyura: Potamidae) from northeastern India, with descriptions of two new species. Nauplius, 29, e2021014. https://doi.org/10.1590/2358-2936e2021014
- Naruse, T., Chia, J.E. & Zhou, X. (2018) Biodiversity surveys reveal eight new species of freshwater crabs (Decapoda: Brachyura: Potamidae) from Yunnan Province, China. PeerJ, 6, e5497. https://doi.org/10.7717/peerj.5497
- Naruse, T., Yeo, D.C.J. & Zhou, X. (2008) Five new species of freshwater crabs (Crustacea: Decapoda: Brachyura: Potamidae) from China. Zootaxa, 1812 (1), 49–68. https://doi.org/10.11646/zootaxa.1812.1.3
- Ng, P.K.L. (1988) The freshwater crabs of Peninsular Malaysia and Singapore. Shinglee Press, Singapore, viii pp., 4 colour pls., 156 pp.
- Ortmann, A. (1896) Das system der Decapoden-Krebse. Zoologische Jahrbucher, Abteilung für Systematik, Geographie und Biologie der Thiere, 9, 409–453.
- Pan, D., Ng, P.K.L. & Sun, H. (2022) Aiyunamon, a new genus for southern Chinese potamid species previously placed in Eosamon Yeo & Ng, 2007 (Decapoda, Brachyura, Potamidae). Raffles Bulletin of Zoology, 70, 320–328.
- Pan, D., Shi, B. & Sun, H. (2021) A new species of freshwater crab of the genus Teretamon Yeo & Ng, 2007 (Decapoda, Brachyura, Potamidae) from southwestern Yunnan, China. Crustaceana, 94, 1059–1070. https://doi.org/10.1163/15685403-bja10141
- Pan, D., Sun, H. & Ng, P.K.L. (2023) The identity of the freshwater crab Aiyunamon tumidum (Wood-Mason, 1871) (Brachyura, Potamidae), with description of a new species from China. Crustaceana, 96 (2), 179–198. https://doi.org/10.1163/15685403-bja10276
- Shi, B.-Y., Pan, D. & Sun, H.-Y. (2022) A new genus and new species of potamid crab from Yunnan, southern China (Decapoda: Brachyura: Potamidae: Potamiscinae). Journal of Crustacean Biology, 42 (1), 1–9. https://doi.org/10.1093/jcbiol/ruac001
- Tan, Q.H., Zhou, X.J. & Zou, J.X. (2021) Two new species of freshwater crab of the genus Aparapotamon Dai & Chen, 1985 (Crustacea, Brachyura, Potamidae) from Yunnan, China. Zookeys, 1056, 149–171. https://doi.org/10.3897/zookeys.1056.63755
- Wang, P., Zhang, Z. & Sun, H. (2020) Ruiyupotamon, a new genus and four new species of freshwater crabs from Northwestern Yunnan, China (Decapoda, Brachyura, Potamidae). Crustaceana, 93, 1315–1341. https://doi.org/10.1163/15685403-bja10059
- Wu, H.W. (1934) Enumeration of the river-crabs (Potamonidae) of China, with descriptions of three new species. Sinensia, 4 (11), 338–352.
- Yeo, D.C.J. & Ng, P.K.L. (2003) Recognition of two subfamilies in the Potamidae Ortmann, 1896 (Brachyura, Potamidae) with a note on the genus Potamon Savigny, 1816. Crustaceana, 76 (10), 1219–1235. https://doi.org/10.1163/156854003773123456
- Yeo, D.C.J. & Ng, P.K.L. (2007) On the genus “Potamon” and allies in Indochina (Crustacea: Decapoda: Brachyura: Potamidae). Raffles Bulletin of Zoology, Supplement 16, 273–308.
- Zhang, Z., Pan, D., Hao, X. & Sun, H. (2020) Two new species of freshwater crabs of the genera Eosamon Yeo & Ng, 2007 and Indochinamon Yeo & Ng, 2007 (Crustacea, Brachyura, Potamidae) from southern Yunnan, China. ZooKeys, 980, 1–21. https://doi.org/10.3897/zookeys.980.52186