In addition to the main dark mask, what lighter marking is frequently found immediately above the dark mask on the Wood Frog's head?
Answer
A lighter, sometimes yellowish or white stripe
While the primary identification feature is the extensive black mask crossing the eye and tympanum, close examination of the head reveals another subtle marking related to this structure. Immediately superior to the dark mask, often situated along the upper lip line, there is frequently a contrasting lighter stripe. This stripe is typically described as being yellowish or white, providing visual separation between the dark mask and the rest of the lighter facial coloration.
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