Re: D. c. orizabensis

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: : This is the mail I did get from Dennis, he´s helping me with this. : : Juergen, : : Drymarchon corais orizabensis is not from Mexico. It has to be from : : temperate South America because in the key to the tropical subspecies of : : Drymarchon, that I've tried to fax to you several times without luck, it says : : that D.c.couperi, erebennus and orizabensis are extralimital, which means : : their range falls outside of the true tropics. : Sorry, but D.c. orizabensis IS from Mexico - from Orizaba, Veracruz, Mexico, in fact. : The key you are referring to (Peters & Donoso-Barros's Catalogue of the Neotropical Squamata) does not include species which are found in Mexico only. Since D.c. orizabensis is restricted to Mexico, it is not included. : The fact that the key refers to the "Neotropical" region does not mean that it only refers to species found within the tropics. The Neotropical faunal region includes all of South America, including Patagonia, Chile, and Tierra del Fuego. Mexico is a special case, as it represents the zone of overlap between the Nearctic and Neotropical faunal regions. As a result, Mexico has one of the highest species diversities of any country in the world. : Cheers, : Wolfgang

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