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COBRA-LIKE HOODING AND MOUTH-GAPPING IN AN ATYPICALLY MONOCLE PATTERNED XENODON SEVERUS (LINNAEUS, 1758): A CASE OF CONVERGENT EVOLUTIONARY BEHAVIOR?

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Ted R. Kahn
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Cover design: Paintings of Ameerega yoshina (orange and red morphs) from a Field Guide to Aposematic Poison Frogs (Dendrobatidae) of the Andean Countries: Colombia, Bolivia, Ecuador, Peru and Venezuela © 2012 Ted R. Kahn FrogLog 100th Edition.
Neck flattening is a common defensive behavior in Xenodon. Herein is described cobra-like hooding and mouth-gaping as seen in an atypically monocle patterned specimen of Xenodon severus from Provincia de Napo, Ecuador. El aplanamiento del cuello es una forma común de comportamiento defensivo en Xenodon. Aquí describimos aplanamiento de capuchón similar a la cobra y apertura de boca como se observó en un ejemplar atípico de Xenodon severus de la provincia de Napo, Ecuador, con patrón monocular de coloración.