Uncovering Endemism in High Montane Forests: Two New Species of Millipede Genus Tylopus Jeekel, 1968 (Diplopoda: Polydesmida: Paradoxosomatidae) from Cambodia and Laos


  • Ruttapon Srisonchai Department of Biology, Faculty of Science, Khon Kaen University, Khon Kaen 40002, THAILAND; Center of Excellence in Modern Agriculture (CEMA), Sakon Nakhon Rajabhat University, Sakon Nakhon 47000 THAILAND
  • Khamla Inkhavilay Research Academic and Service Office, National University of Laos, P.O. Box 7322, Dongdok, Vientiane, LAOS
  • Peng Bun Ngor Faculty of Fisheries, Royal University of Agriculture, Sangkat Dongkor, Khan Dongkor, P.O. Box 2696, Phnom Penh 120501, CAMBODIA
  • Chirasak Sutcharit Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, THAILAND
  • Natdanai Likhitrakarn Program of Agriculture, Faculty of Agricultural Production, Maejo University, Chiang Mai, 50290, THAILAND


biodiversity, endemic species, Southeast Asia, Sulciferini


Two new species of the predominantly Indochinese to southern Chinese millipedes belonging to the genus Tylopus Jeekel, 1968 are described: Tylopus bokorensis sp. nov. from southern Cambodia, and T. panhai sp. nov. from southern Laos. These species can be clearly discriminated from congeners by the shape of processes on postfemoral part of the gonopod in combination with some distinct somatic characters. Tylopus bokorensis sp. nov. is the first in this genus to be found in Cambodia. Both species inhabit montane habitats more than 1,000 m above mean sea level, and we regard them as endemic to these countries. An identification key and distribution map of Tylopus occurring in Cambodia and Laos are provided.


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How to Cite

Srisonchai, R. , Inkhavilay, K. , Ngor, P.B. , Sutcharit, C. and Likhitrakarn, N. 2023. Uncovering Endemism in High Montane Forests: Two New Species of Millipede Genus Tylopus Jeekel, 1968 (Diplopoda: Polydesmida: Paradoxosomatidae) from Cambodia and Laos. Tropical Natural History. 7 (May 2023), 151–164.



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