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New and highest record of the rare Szechwan ratsnake, Euprepiophis perlaceus (Serpentes: Colubridae) from Muge Co, Kangding, Garzê, China

Little is known about the distribution, biology, and ecology of the rare, endemic Szechwan ratsnake. Here, molecular data of the species are provided from a habitat at 3370 m a.s.l., the so far highest record of this snake. Genetic analysis (mtDNA and nDNA) confirmed the identity of the specimen as E. perlaceus and its close relationship to E. mandarinus. P-distances are in the range known for Elaphids and Euprepiophis as interspecific.