CONCLUSIONS
Based on more extensive sampling, we conducted a comprehensive study of
Chinese species of Sibynophis , providing new insights into their
systematics and distribution. Our results revealed that S. c.
miyiensis is synonymous with S. c. graham i, which should be
elevated to a species level. Furthermore, S. triangularis is
reported as new to China and Myanmar. In total, four species, S.
chinensis , S. collaris , S. grahami , and S.
triangularis , are distributed in China. Consequently, we revised their
distribution boundaries in China and re-examined previously
misidentified specimens.