Figure 1 in Fossorial morphotype does not make a species in water voles

Figure 1 Distribution of water vole samples sequenced for cytochrome b gene. Approximate ranges of ArVicola amphibiUS S.S. and A. Scherman follow Batsaikhan et al. (2008) and Amori et al. (2008a), respectively. Symbols for morphotypes (∆ – fossorial; □ – aquatic) correspond to those in Figure 4 and Table 1. Samples of unknown morphotype are denoted by circles.