Lycodon

Zhang, Jun, Jiang, Ke, Vogel, Gernot & Rao, Dingqi, 2011, A new species of the genus Lycodon (Squamata, Colubridae) from Sichuan Province, China, Zootaxa 2982, pp. 59-68 : 66

Key to the species and subspecies of Lycodon of China

1a. No preocular, both prefrontal and loreal entering orbit............................................... L. subcinctus

1b. Preocular present; prefrontal not entering orbit.............................................................. 2

2a. Loreal entering orbit................................................................................... 8

2b. Loreal not entering orbit............................................................................... 3

3a. Venter banded............................................................................... L. synaptor

3b. Venter not banded..................................................................................... 4

4a. Upper dorsal and vertebral scale rows entirely smooth....................................................... 6

4b. Upper dorsal rows distinctly keeled....................................................................... 5

5a. Subcaudals 105–114 in males, endemic to Taiwan............................................ L. ruhstrati ruhstrati

5b. Subcaudals 90–100 in males, present on Asian mainland....................................... L. ruhstrati abditus

6a. Anal plate entire........................................................................... L. futsingensis

6b. Anal plate divided.................................................................................... 7

7a. Loreal not or slightly in contact with internasal, clear pale bands around body.............................. L. laoensis

7b. Loreal broad in contact with internasal, bands absent or poorly developed............................... L. capucinus

8a. Anal divided, bands yellow................................................................. L. liuchengchaoi

8b. Anal single, bands white to cream....................................................................... 9

9a. More than 90 Sc............................................................................ L. gongshan

9b. Less than 90 Sc.............................................................................. L. fasciatus