Variation, Distribution and Systematic Status of the Black-headed Snake Tant1lla
نویسندگان
چکیده
In August of 1959, David B. Wake and I collected a specimen of Tantilla in the vicinity of Ruby, Santa Cruz County, Arizona, that exhibited several morphological characteristics unknown in species of Tantilla reported from the United States at that time. In 1962 I collected additional specimens of this species during the course of a herpetofaunal survey of the lowlands in southern Sonora and Sinaloa, Mexico. Subsequent investigation revealed that these snakes are Tantilla yaquia. The acquisition of new material led me to initiate a project to analyze variation and distribution in the species in order to clarify its status.
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تاریخ انتشار 2007