The semi-aquatic freshwater earthworms of the genus Glyphidrilus Horst, 1889 from Thailand (Oligochaeta, Almidae) with re-descriptions of several species Author Chanabun, Ratmanee Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand Author Sutcharit, Chirasak Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand Author Tongkerd, Piyoros Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand Author Panha, Somsak Animal Systematics Research Unit, Department of Biology, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand somsak.pan@chula.ac.th text ZooKeys 2013 2013-02-06 265 1 76 http://dx.doi.org/10.3897/zookeys.265.3911 journal article http://dx.doi.org/10.3897/zookeys.265.3911 1313-2970-265-1 DCFC44484A604991B3F7DAEA77D03FE2 E458246D0C01DA57FF9AF025FF9C8A29 578136 14 . Glyphidrilus horsti Stephenson, 1930 Fig. 15 Table 1 Glyphidrilus horsti Stephenson, 1930: 4. Type locality: Pulau Berhala, Straits of Malacca. Jamieson 1968 : 393. Brinkhurst and Jamieson 1971 : 759. Shen and Yeo 2005 : 18, fig. 2. Material examined. One specimen of Glyphidrilus horsti from Turut Track, Kranji Wireless Station, Singapore, ZRC ( Fig. 15 ). Remarks . See Table 1 . Distribution of this species includes the type locality in Pulau Berhala, Straits of Malacca, and Pulau Berhala, Turut Track, Kranji Wireless Station, Singapore. Figure 15. Morphology of Glyphidrilus horsti Stephenson, 1930 (ZRC) from Turut Track, Kranji Wireless Station, Singapore, showing the A external ventral and B internal dorsal views.