Viperidae-Check list snakes northern Thailand

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Calloselasma rhodostoma, the Malayan Pit-viper. This brown snake with triangle-shaped blotches can reach a length of about 100 cm. It occurs in most parts of the region, and is locally common in deciduous forest. The pictures above show an individual from Doi Suthep National Park, Mueang Chiang Mai.

Daboia siamensis, the Siamese or Eastern Russell’s Viper. The ground color of this large, sturdy viper (maximal 140 cm) is buff, densely packed with brown, ovoid blotches. It is rare in northern Thailand, but has been reported in Uthai Thani and Nakhon Sawan Province. It is locally common in Central Thailand. e.g. in parts of Lopburi and Sa Kaeo Province. It is most often encountered in relatively open lowland terrains, such as mosaics of paddies, wastelands, marches and plantations. A. A captive specimen in the Mae Rim Snake Farm, Chiang Mai (the true origin of this snake was unknown). B. Pattern on flanks and belly of a road-killed specimen from Watthana Nakhon District, Sa Kaeo. C. Dorsal skin of a road-killed specimen from Sa Kaeo Province. D-F. An individual from Watthana Nakhon District, Sa Kaeo (Central Thailand). More about this viper: click here .
Ovophis monticola, the Mountain Pit-viper.
Protobothrops mucrosquamatus, the Brown-blotched Pit-viper.
• Protobothrops spec. (“Protobothrops scholaris”)
• a. Trimeresurus albolaris
• b. Trimeresurus cf albolabris
• Trimeresurus gumprechti
• Trimeresurus macrops
• Trimeresurus popeiorum