Abstract
We describe two new species of green pitviper from Southeast Asia that are morphologically similar to Cryptelytrops macrops, but can be distinguished from that species by genetic means, multivariate analysis of morphology and some aspects of coloration. Cryptelytrops cardamomensis sp. nov., is described from southeastern Thailand and the Cardamom Mountains of southwestem Cambodia. Cryptelytrops rubeus sp. nov. has been recorded from southem Vietnam and eastem Cambodia. These species have previously been conftised with C. macrops, hence we also present here a redescription of this species, whose range is now restricted to Thailand, southem and central Laos, and northeastem Cambodia. All three species are present in Cambodia, but have disjunct rangescorresponding to three separate highland regions in southwestem (Cardamom Mountains), northeastem (westem edge of the Kontum Plateau) and eastem (low elevation hills on the westem edge of the Langbian Plateau) Cambodia for C. cardamomensis, C. macrops and C. rubeus respectively. However, there is still considerable morphological variation between geographically separated populations of C. macrops s.s., and greater sampling in southem and northem Thailand in particular may be required before the speciesdiversity of this group is fully clarified.
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