GrBet 028 - Sent to Peter W. Messer

Found this beetle, and the one linked below, under a cinder rock within the dried up mill pond area. Collected this species once before in 2005 - my notes from then are as follows:

"Oct 11, 2005: Old Mill pond area when all dried up - 20 or more black & brown ground beetles (although a few were all black). They seem to have little tunnels down under - they scattered when I overturned the rock - some down the tunnels. Saw some more under another rock nearby. Found in area that was previously underwater during the springtime, but was now covered in grassy vegetation."

I do now know if the dimorphic coloration is a male female characteristic.

Another interesting feature is two depressions within the lower part of the thorax.

the black one