What specific head marking is characteristic for *Bothrops jararaca*?
Answer
A prominent dark brown stripe running from behind the eye toward the angle of the mouth.
Identification using the head pattern of *Bothrops jararaca* involves recognizing a specific longitudinal marking. This species characteristically displays a noticeable dark brown stripe that initiates immediately behind the eye and extends backward until it reaches the corner or angle of the mouth. Furthermore, this stripe is typically outlined by a definite pale coloration along its dorsal edge, making the dark line stand out against the surrounding head pigmentation. This contrasts sharply with *B. alternatus*, which often presents a more overall dark head top featuring tan or white overlay markings.
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