Beetle's fire-detecting sensors. Coloured scanning electron micrograph (SEM) of the infrared sensors (sensilla) of the Melanophila acuminata beetle, with which it is able to detect distant fires. The sensors are found behind the second legs of the beetle. This beetle lays its eggs in burnt trees, and the larvae burrow into the damaged wood. The beetle uses these detectors to find burning trees, which it can see from up to 12 kilometres away. Magnification: x2000 when printed at 10 centimetres wide.
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