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Beetle Larva Moving and Feeding Inside a Log

Many species of beetle live inside live and decaying trees, branches and logs when they are in larval form. It is possible to detect the sounds with a contact microphone. The sounds tend to be either very short clicks caused by feeding or more noise-like due to movement. The recording here is of the larva of a Two-banded Longhorn Beetle (Rhagium bifasciatum) inside a pine log. Both types of sound can be heard.

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Dragonfly compound eyes are made of up to 30,000 separate facets or 'ommatidia'.

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