The dangerously venomous Trimeresurus erythrurus (sometimes placed in genus Cryptelytrops, as C. erythrurus; e.g., Malhotra and Thorpe 2004; Hoser 2012) is found in Myanmar west of longitude 98° (in Sagaing State, Kachin State, Rakhine State, Yangon Division) and in India (northeastern India from Bengal to Assam, east of longitude 88° east through Bangladesh. Individuals have been found in rainforest (Myanmar coastal, Mizarom-Manipur-Kachin) and moist deciduous forest. Recorded elevations are below 200 m. Individuals have been encountered in trees and on the ground near streams. These snales are active at night. (Leviton et al. 2003 and references therein)
Toriba and Hirabayashi (1995) reported on the hatching and development of T. erythrurus in captivity.
Leviton et al. (2003) provide a technical description of this species: Scales in 23-25 longitudinal rows at midbody; first upper labial partially or completely fused to nasal; 9-13 upper labials, 1-2 rows of scales separate upper labials from subocular; 11-14 scales in a line between supraoculars; supraoculars rarely divided; temporal scales small, strongly keeled; ventrals: males: 153-174, females 151-180; subcaudals: males 62-79, females 49-61, usually paired, occasionally unpaired shields present amongpaired series; head uniform green, dorsum bright green, light ventrolateral stripe present in males, present or absent in females (status in females must be clarified). Tail spotted with brown. Hemipenes without spines. Total length: males 575 mm, females 1045 mml ;tail length: males 120 mm, females 165 mm.
Trimeresurus erythrurus, commonly known as the red-tailed bamboo pitviper,[3] redtail bamboo pit viper, and redtail pit viper is a venomous pit viper species found in South Asia and Myanmar. No subspecies are currently recognized.[2]
Males grow to a maximum total length 575 millimetres (22.6 in), of which the tail is 120 millimetres (4.7 in) in length. Females reach a maximum total length of 1,045 millimetres (41.1 in), with a tail length of 165 millimetres (6.5 in).[4]
Scalation: dorsal scales in 23–25 longitudinal rows at midbody; first upper labial partially or completely fused to nasal; 9–13 upper labials, 1–2 rows of scales separate upper labials from the suboculars; 11–14 scales in a line between supraoculars; supraoculars rarely divided; temporal scales small, strongly keeled; ventral scales: males 153–174, females: 151–180; subcaudals: males 62–79, females 49–61, usually paired, occasionally unpaired shields present among paired series.[4]
Color pattern: head uniform green, dorsum bright green, light ventrolateral stripe present in males, present or absent in females (Maslin [1942:23] says that the ventrolateral stripe is absent, but M.A. Smith [1943:523] states that it is present in males and variable in females), tail spotted with brown; hemipenes without spines.[4]
Found in eastern India (Assam, Sikkim), Bangladesh, Myanmar, Bhutan, and Nepal.[2] The original type locality given was as "Delta Gangeticum" (Ganges Delta, West Bengal State, eastern India). The type locality given by Boulenger (1896) is "Ganges Delta."[1]
Trimeresurus erythrurus, commonly known as the red-tailed bamboo pitviper, redtail bamboo pit viper, and redtail pit viper is a venomous pit viper species found in South Asia and Myanmar. No subspecies are currently recognized.
