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Range DescriptionThis species is known only from the Isthmus of Kra in southern Thailand (Matsui et al., 2005). There are records from: Punyaban waterfall, Raksawarn Public Park, Ranong Spa, in Ranong Province; Klong Hat Som Pen, Muang, in Ranong Province; and Kao Lak, in Phang Nga Province (Matsui et al., 2005). In addition, specimens from Tasan, in southern Thailand, formerly considered to belong to Ansonia malayana, are now considered to belong to A. kraensis (Grismer, 2006). It is possible that other records of A. malayanus from southern Thailand might refer to this species. The type locality (Punyaban waterfall) is at 113m asl, but no information has been provided on its elevation range.