Tuesday, May 24, 2016

Click Beetle

The eastern eyed click beetle (Alaus oculatus) is often found around rotting timber and that is exactly where I found this one….in a pile of old, rotting boards. It is named for the false eyes that appear on the back of the thorax.

The "click" refers to the sound that they make when they flip themselves upright. According to the Audobon Field Guide, “they accomplish this amazing feat by snapping a fingerlike spine on the underside of the thorax into a groove below the mesothorax.” Strangely, this particular one did not exhibit the phenomenon. He just lays on his back playing dead.


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