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Butterfly eyespot morphology appears to be the result of the evolution of an altered version of the regulatory circuit which patterns the wings of other insects. This rogue regulatory circuit is able to pattern both the anterior and posterior eyespots independent of the usual anterior/posterior wing compartmentalization restrictions seen in the ...
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The eyespots on the undersides of the wings of both males and females may be a form of automimicry in which a spot on the body of an animal resembles an eye of a different animal to deceive potential predator or prey species, to draw a predator's attention away from the most vulnerable body parts, or to appear as an inedible or even dangerous ...
The scales on butterfly wings are pigmented with melanins that can produce the colours black and brown. The white colour in the butterfly family Pieridae is a derivative of uric acid, an excretory product. [13] [40]: 84 Bright blues, greens, reds, and iridescence are usually created not by pigments but through the microstructure of the scales.
The Morpho Menelaus' characteristic iridescent wings has a unique wing structure. The ground scales are covered by a set of longitudinal ridges, and within the ridges are layers of lamella. [12] Because the size of the microstructure is the same as the wavelength of light, the layers in the wings react strongly with visible light. [2]
Wing structure and colouration often vary with morphs, such as in the aphids, migratory phases of locusts and polymorphic butterflies. At rest, the wings may be held flat, or folded a number of times along specific patterns; most typically, it is the hindwings which are folded, but in a few groups such as the vespid wasps, it is the forewings.
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It is the state butterfly of Tennessee. Its distinctive wing shape and long tails make it easy to identify, and its black-and-white-striped pattern is reminiscent of a zebra. [2] [3] The butterflies are closely associated with pawpaws, and are rarely found far from these trees.