Dendrelaphis, Boulenger, 1890

Rooijen, Johan Van & Vogel, Gernot, 2008, A New Species Of Dendrelaphis (Serpentes: Colubridae) From Java, Indonesia, Raffles Bulletin of Zoology 56 (1), pp. 189-197 : 193

Key to the species of the genus Dendrelaphis inhabiting the Sunda region 1

1. Thirteen dorsal scale rows at midbody ..... D. caudolineatus

– Fifteen dorsal scale rows at midbody ................................. 2

2. A bright, white or yellow, ventrolateral stripe is present ...... .................................................................................. D. pictus

– No light ventrolateral stripe ................................................. 3

3. The temporal stripe covers only the lower part of the temporal region .................................................................................... 4

– The temporal stripe covers the whole temporal region ..... 5

4. Temporal stripe ends at the corner of the jaw; in life, neck red when inflated; eye large; two supralabials touch the eye; first sublabial touches two infralabials ..................... D. kopsteini

– The temporal stripe extends onto the neck where it breaks up into black bars; in life, neck not red when inflated; eye small ............................................................................ D. humayuni

5. In life, neck yellow when inflated; black oblique bars laterally on the body; less than 170 ventrals ...................... D. striatus

– In life, neck not yellow when inflated; more than 170 ventrals ............................................................................................... 6

6. Three black lateral stripes present on the posterior third of the body; eye very large, head bulges behind the snout to accomodate the large eye; first sublabial touches more than two infralabials ........................................................... D. formosus

– Three black lateral stripes absent; eye small, head nearly flat 7

7. A single black lateral stripe in posterior half of the body, covering the lower half of the third dorsal row; subcaudals 126–133; ventrals 183–189; first sublabial touches two infralabials; compact build (SVL/head-length 23.5–28.5) ........................... ................................................... D. underwoodi , new species

– Black lateral stripe absent; subcaudals 137-156; ventrals 189- 206; slender build (SVL/head-length 31.0–36.0) .................... ....................................................................... D. cyanochloris