J. van Rooijen
- Contributions to a review of the Dendrelaphis pictus (Gmelin, 1789) complex - 2. the eastern forms (Serpentes: Colubridae)
- Volume | Issue number
- 21 | 1/2
- Pages (from-to)
- Document type
- Faculty of Science (FNWI)
The Southeast Asian, Indonesian and Philippine forms of the polytypic Dendrelaphis pictus (Gmelin, 1789) are reviewed using multivariate analyses. Several distinct phenetic clusters are discerned. Geographically, these clusters are separated by important biogeographic boundaries, such as the Isthmus of Kra, Wallace's line and Weber's line. The Indochinese and Sundaic populations, although morphologically distinct, are referred to the name D. pictus as these populations are assumed to be interdependent lineages. Two clusters are considered to represent distinct species as these population complexes undoubtedly represent separate evolutionary lineages. The first separate cluster comprises the populations from the Philippines and Sulawesi. This population complex is referred to the name D. marenae. This species differs from known forms in coloration, in the size of the vertebral scales, the number of subcaudals and the tail length. The second separate cluster comprises the Moluccan populations which are referred to the name D. grismeri. This species is characterized by the number of ventrals, subcaudals and temporals as well as tail length.
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