Snakes of the genus Oxyrhopus Colubridae: Squamata in Colombia: taxonomy and geographic variation. Four species of Oxyrhopus occur in Colombia, one O. No geographic variation was detected in O. Recognition of subspecies within O.
The snake previously reported as O. Keywords: Geographic variation; New species; Oxyrhopus. De las cuatro especies, una O. Se posible de reconocer subespecies pero tal reconocimiento oscura mas que ilumina. La serpiente conocida antes como O. Either explicitly or implicitly, Bailey reported O.
These two papers reported the same taxa as reported by Bailey but added O. These three publications provide only the merest of information about species distributions and nothing about individual or populational variation, aspects that are central to the present contribution. The four species of Oxryhopus known for Colombia include two O. Oxyrhopus petola may be so completely melanistic that inexperienced persons confuse them with adult Clelia clelia which does not exhibit preocular-frontal contact.
In my survey of Colombian collections, I found O. From these specimens, scale counts, measurements, sex, maturity, location of the umbilicus when neonates , and characters of color patterns were collected by me. Lengths of pale and dark body bands were measured in scale lengths along the vertebral scale row. Aside from males with everted hemipenes, all specimens were sexed by dissection of the base of the tail.
My simple significance tests consist of using twice the S. Characters pertinent to identification. Oxyrhopus have smooth scales with a pair of apical pits and exhibit a posterior reduction in scale row number by two rows. The anal scute is entire. Subcaudals are paired. Scale row formulae: Aside from the montane species, O.
