Black-spotted pond frog (Pelophylax nigromaculatus) on the Chinese Loess Plateau represents a cryptic species: Evidence from molecular phylogeny and ecological niche modeling
De Ma, Hua-Tao Liu, Ya-Jie Ji, Cheng-Min Shi, Yu-Hui Yang, De-Xing Zhang
J Syst Evol . 2015, (4): 339 -350 .  DOI: 10.1111/jse.12156