Heteroderes amplicollis (Gulf Wireworm).
 
 
 
Size: approx. 5-10 mm. Photo: 09/12/11, 11 pm.


This click beetle is a Gulf Wireworm (Heteroderes amplicollis). It is not native but was introduced from South/Central America. Click beetles can produce a loud click sound by snapping a spine on the prosternum into a notch on the mesosternum. This trick can bounce the beetle into the air to avoid a predator or simply to get back on its feet.  
 
 
bug guide (this photo):
http://bugguide.net/node/view/575754
wikipedia:
http://en.wikipedia.org/wiki/Click_beetle