What structure characterizes the genus Crotalus according to its Greek derivation?
Answer
The interlocking keratinous segments at the tail tip.
The genus name Crotalus is specifically derived from the Greek word krotalon, which translates to 'a clapper or rattle.' This morphological feature, the rattle, is unique to snakes within this genus and serves as an aposematic signal, warning potential threats of danger. This defining characteristic, found at the tail tip via interlocking keratinous segments, is the basis for its inclusion in the genus Crotalus, differentiating it from other pit vipers.
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