New species of semi-aquatic freshwater earthworm genus Glyphidrilus Horst, 1889 from Thailand and Laos (Oligochaeta, Almidae)

Ratmanee Chanabun; Khamla Inkavilay; Somsak Panha

doi:10.3897/zookeys.672.10212

New species of semi-aquatic freshwater earthworm genus Glyphidrilus Horst, 1889 from Thailand and Laos (Oligochaeta, Almidae)

Zookeys. 2017 May 3:(672):1-34. doi: 10.3897/zookeys.672.10212. eCollection 2017.

Authors

Ratmanee Chanabun^{1

2}, Khamla Inkavilay³, Somsak Panha²

Affiliations

¹ Program in Animal Science, Faculty of Agriculture Technology, Sakon Nakhon Rajabhat University, Sakon Nakhon 47000, Thailand.
² Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
³ Department of Biology, Faculty of Science, National University of Laos, Vientiane, Laos P.D.R.

Abstract

Seven new species of semi-aquatic freshwater earthworms belonging to the genus Glyphidrilus Horst, 1889 are described from Thailand and Laos, Glyphidrilus nanensis Chanabun & Panha sp. n., G. satunensis Chanabun & Panha sp. n., G. chiangraiensis Chanabun & Panha sp. n., G. namphao Chanabun & Panha sp. n., G. sekongensis Chanabun & Panha sp. n., G. namdonensis Chanabun & Panha sp. n., and G. champasakensis Chanabun & Panha sp. n. The species are characterized by their external and internal morphological characteristics, as well as body sizes. Other morphological character differences between these seven species were also compared, and an identification key is provided. The relationships of the new species to congeners are discussed.

Keywords: Almidae; Glyphidrilus; Laos; Thailand; earthworms; southeast Asia.