Trimeresurus sabahi
Trimeresurus sabahi, commonly known as the Sabah pit viper or Sabah bamboo pitviper, is a venomous pitviper species. If defined narrowly, it is endemic to the island of Borneo. If defined more broadly, it consists of five subspecies found in Southeast Asia.
Subspecies
There are five subspecies:Trimeresurus sabahi barati Regenass & Kramer, 1981 – Sumatra, Mentawai Archipelago T. s. buniana Grismer, Grismer & McGuire, 2006 – Tioman Island T. s. fucatus Vogel, David & Pauwels, 2004 – Malay Peninsula T. s. sabahi Regenass & Kramer, 1981 – northern Borneo T. s. toba David, Petri, Vogel & Doria, 2009 – SumatraIUCN treats these as full species, respectively T. barati, T. buniana, T. fucatus, and T. toba, restricting T. sabahi to the nominotypical subspecies.
Description
Adults may attain a snout-vent length of.Dorsally, it is uniform green, without crossbars. Ventrally it is pale green. There is narrow bicolor stripe on the first one and a half dorsal scale rows. In males this stripe is rust-colored or red below, and it is white above. In females it is yellow or white. The iris of the eye is red or orange in adults of both sexes, but in young specimens may be yellowish-green. There are no markings behind the eye.
The scalation includes 21 rows of dorsal scales at midbody, 149–157/148–156 ventral scales in males/females or 148–159 in general, 72–76/59–65 subcaudal scales in males/females, and 9–11 supralabial scales.