蝮亚科 Pit viper
（重定向自Pitviper）
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蝮亚科（学名Crotalinae）是蝰蛇科的一个亚科，统称蝮蛇，其主要特征是在眼与鼻孔之间具颊窝。除少数为卵生外，绝大部分品种为卵胎生。
Pitviper
中文百科
英语百科
Pit viper 蝮亚科
（重定向自Pitviper）
The Crotalinae, commonly known as pit vipers, crotaline snakes, or pit adders, are a subfamily of venomous vipers found in Eurasia and the Americas. They are distinguished by the presence of a heat-sensing pit organ located between the eye and the nostril on either side of the head. Currently, 18 genera and 151 species are recognized: 7 genera and 54 species in the Old World, against a greater diversity of 11 genera and 97 species in the New World. These are also the only viperids found in the Americas. The groups of snakes represented here include rattlesnakes, lanceheads and Asian pit vipers. The type genus for this subfamily is Crotalus, of which the type species is the timber rattlesnake, C. horridus.
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