Craspedocephalus borneensis, commonly known as the Bornean pit viper,Gumprecht A, Tillack F, Orlov NL, Captain A, Ryabov S. 2004. Asian Pit vipers. GeitjeBooks Berlin. 1st Edition. 368 pp. . is a venomous pit viper species endemic to the island of Borneo. No subspecies are currently recognized.
Description
Scalation includes 19–21 rows of dorsal scales at midbody, 152–180 ventral scales, undivided anal scale, 45–58 divided subcaudal scales, and 8–11 supralabial scales.
Its coloration varies. Individuals may be brown with darker brown saddles, or light brown with a few darker markings, or even bright yellow with darker markings.
Adults may attain in snout-vent length (SVL).Das, Indraneil. 2006. A Photographic Guide to Snakes and Other Reptiles of Borneo. Ralph Curtis Books. Sanibel Island, Florida. 144 pp. . (Trimeresurus borneensis, p. 57.)
Geographic range Craspedocephalus borneensis is found on the island of Borneo (Brunei, Kalimantan, Sabah, Sarawak) as well as in the Natuna Islands.
The type locality given is "Sarawack" (= Sarawak, Borneo).
Habitat It is found in forests below an altitude of . Even though the tail is prehensile, adults are usually on the forest floor. Juveniles may be in low vegetation.
Diet Craspedocephalus borneensis preys upon small rodents and small birds.
Reproduction Whether this species of Craspedocephalus lays eggs or bears live young is as yet unknown.
References
Further reading Peters, W. 1872. Übersicht der von den Herren M.se G. Doria und D.r O. Beccari in Sarawack auf Borneo von 1865 bis 1868 gesammelten Amphibien. Annali del Museo Civico di Storia Naturale di Genova, Series 1, 3: 27-45. ("Atropophis borneensis n. sp.", pp. 41–42.)