Chanabun Ratmanee, Inkavilay Khamla, Panha Somsak
Program in Animal Science, Faculty of Agriculture Technology, Sakon Nakhon Rajabhat University, Sakon Nakhon 47000, Thailand.
Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand.
Zookeys. 2017 May 3(672):1-34. doi: 10.3897/zookeys.672.10212. eCollection 2017.
Seven new species of semi-aquatic freshwater earthworms belonging to the genus Horst, 1889 are described from Thailand and Laos, Chanabun & Panha , Chanabun & Panha , Chanabun & Panha , Chanabun & Panha , Chanabun & Panha , Chanabun & Panha , and Chanabun & Panha 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.