How thin, delicate butterfly wings keep from overheating

Living parts such as veins have protective structures that keep them cooler than dead scales

Living parts of butterfly wings — including veins and pheromone-releasing scent patches — have special structures that help those areas release more heat than surrounding scales. Brighter areas in these infrared images correspond to higher heat release.

Nanfang Yu and Cheng-Chia Tsai

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