Two New Species of Semi-Aquatic Freshwater Earthworm Genus Glyphidrilus Horst, 1889 (Oligochaeta: Almidae) from Thailand and Laos

Authors

  • Ratmanee Chanabun Program in Animal Science, Faculty of Agricultural Technology, Sakon Nakhon Rajabhat University, Sakon Nakhon 47000, THAILAND; Biodiversity and Utilization Research Unit, Center of Excellence in Modern Agriculture, Sakon Nakhon Rajabhat University, Sakon Nakhon 47000, THAILAND
  • Parin Jirapatrasilp Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, THAILAND
  • Teerapong Seesamut Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, THAILAND
  • Ueangfa Bantaowong Division of Biology, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi, Pathum Thani 12110, THAILAND
  • Anuwat Aoonkum Biodiversity and Utilization Research Unit, Center of Excellence in Modern Agriculture, Sakon Nakhon Rajabhat University, Sakon Nakhon 47000, THAILAND; Faculty of Agricultural Technology, Sakon Nakhon Rajabhat University, Sakon Nakhon 47000, THAILAND
  • Khamla Inkhavilay Department of Biology, Faculty of Natural Science, National University of Laos, P.O. Box 7322, Dongdok, Vientiane, LAOS

Keywords:

Glyphidrilus, earthworm, new species, Thailand, Laos, taxonomy

Abstract

Material of the semi-aquatic freshwater earthworm genus Glyphidrilus Horst, 1889 recently collected from Thailand and Laos contains two new species: G. panhai Chanabun, sp. nov. from Song Khram River, Buengkan, Thailand and G. samueljamesi Chanabun, sp. nov. from Khon Phapheng Waterfall, Mekong River, Champasak, Laos. Morphological characters of both new species are distinctly different from the previous recognized species. Glyphidrilus panhai sp. nov. has wings in 23, 24–29, 30, 31, clitellum in 17, 18–32, 33, 34, 35, and spermathecae in 13/14 (14/15)–18/19. Glyphidrilus samueljamesi sp. nov. has wings in 25, 26, 27–33, 34, 35, 36, clitellum in 18, 19, 20–40, 41, 42, 43, 44, and spermathecae in 13/14 –20/21. Descriptions of all new species including illustrations of the external and internal morphological characteristics are provided.

References

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Published

2023-05-06

How to Cite

[1]
Chanabun, R. , Jirapatrasilp, P. , Seesamut, T. , Bantaowong, U. , Aoonkum, A. and Inkhavilay, K. 2023. Two New Species of Semi-Aquatic Freshwater Earthworm Genus Glyphidrilus Horst, 1889 (Oligochaeta: Almidae) from Thailand and Laos. Tropical Natural History. 7 (May 2023), 31–40.

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No. 7 (2023): Supplement

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Original Articles

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