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Dewlap hue. Examples of spectrophotometrically measured percentage reflectance across the near UV to red spectrum (in nm). (a) The anterior dewlap of a xeric woodland male is a dull greyish (including near UV) hue, which contrasts to the bright focal green hue of the montane rainforest male. (b) The posterior dewlap of the rainforest male is brighter, more focal yellow, than that of the xeric woodland male.
