A New Species of Vampire Crab (Crustacea: Brachyura: Sesarmidae: Geosesarma) from a Freshwater Swamp Forest in Narathiwat Province, Southern Thailand, with a Note on Geosesarma serenei Ng, 1986


  • Peter K. L. Ng Lee Kong Chian Natural History Museum, National University of Singapore, 14 Science Drive 4, Singapore 117543, REPUBLIC OF SINGAPORE
  • Pun Yeesin Department of Technology and Industries, Faculty of Science and Technology, Prince of Songkla University, Pattani, THAILAND
  • Rueangrit Promdam Princess Maha Chakri Sirindhorn Natural History Museum, Prince of Songkla University, Hat Yai, Songkhla 90110, THAILAND


Decapoda, semi-terrestrial freshwater sesarmid, Geosesarma todaeng, lowland swamp forest, Peninsular Thailand


A new species of vampire crab, Geosesarma todaeng, is described from a freshwater swamp forest in Narathiwat Province, Peninsular Thailand. This lowland species belongs to the G. foxi species group and can be distinguished from congeners by its carapace, male pleon and male first gonopod features. This brings to three the number of Geosesarma species now known from Thailand. The other member of G. foxi species group that previously record in Peninsular Thailand, G. serenei is discussed.


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How to Cite

Ng, P., Yeesin, P. and Promdam, R. 2023. A New Species of Vampire Crab (Crustacea: Brachyura: Sesarmidae: Geosesarma) from a Freshwater Swamp Forest in Narathiwat Province, Southern Thailand, with a Note on Geosesarma serenei Ng, 1986. Tropical Natural History. 23, 1 (Jul. 2023), 97–104.



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