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Butterfly Wing Scale Digital Image Gallery

Blue Morpho Butterfly

In a sea of green vegetation, blue morpho butterflies sparkle like jewels. As one of the most iridescent forms in the insect world, the large lepidopterans must not expose their wing tops for long if they want to avoid notice. Blue morphos, which inhabit the dwindling rainforest canopies of South and Central America, frequently suffer from commercial exploitation.

Although brilliantly hued, members of the species Morpho menelaus are not in constant danger of predation. The butterflies beat their long wings so slowly that the eye-catching blue tops only appear after long intervals, making them difficult for predators to track. The brown undersides that are more frequently exposed are not as vulnerable. Their earth-tone shade and bronze-colored eyespots help them blend into the environment of the tropical rainforest.

Interestingly, blue morpho caterpillars are not blue. Instead, the larvae are reddish-brown with bright patches of lime-green on their backs. The nocturnal feeders form communities, but are extremely cannibalistic. The peculiarity may be a type of population control since the larvae appear to have few natural enemies. Tiny hairs that cause irritation when touched protect their bodies from most species. Those that survive the hunger of their brethren in the larval stage maintain the familial bond and pupate together.

As adults, blue morphos are sometimes competitive, but not to the extent of cannibalism. The butterflies drink the juices of rotting fruits with their long straw-like proboscises. The strategy is well suited for the tropical rainforests, where finding blooming flowers of a specific type is not always easy. During flight, males tend to exhibit aggressive behavior if another male comes too close. Yet, at a watering place two males can sit close together without discord. In fact, male blue morpho butterflies frequently roost together at night, tending to repeatedly visit the same location.

Blue Morpho Butterfly Images in Reflected Light

Blue and Copper Wing Scales - Blue morpho butterflies feature copper colored eyespots. This reflected light image displays the beautiful contrast between the blue and copper hued scales of the species.

Edge of Wing - The wings of blue morpho butterflies are marked with a dark marginal band, which can be seen in this reflected light image. Also, although butterfly wings appear rounded from a distance, here they have a distinctly jagged look.

Upper Side of Wing (Low Magnification) - This image of scales covering the upper side of a blue morpho wing looks like a shiny sea of blue. The iridescent scales make blue morphos one of the most recognizable butterfly species.

Upper Side of Wing (High Magnification) - A high level of magnification reveals the subtle details of a blue morpho wing, including the delicate fur that coats it. The light reflects from these wing scales in varying shades of blue.

Contributing Authors

Cynthia D. Kelly, Shannon H. Neaves, Laurence D. Zuckerman, and Michael W. Davidson - National High Magnetic Field Laboratory, 1800 East Paul Dirac Dr., The Florida State University, Tallahassee, Florida, 32310.



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