網址: https://www.researchgate.net/profile/Masatoshi-Matsunami/publication/303794743/figure/fig6/AS:372440267018248@1465808087889/Sampling-location-of-Hokkaido-salamanders-Map-showing-the-locality-where-each-population.png
網址2: https://www.researchgate.net/figure/Sampling-location-of-Hokkaido-salamanders-Map-showing-the-locality-where-each-population_fig6_303794743
