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Photo#589471
Beetle with antlers - Sandalus niger - male

Beetle with antlers - Sandalus niger - Male
Balaban yard, Skokie, Cook County, Illinois, USA
October 9, 2011
We were cleaning the garage when this guy appeared out of nowhere. Again, feel free to frass any images that aren't useful.

Images of this individual: tag all
Beetle with antlers - Sandalus niger - male Beetle with antlers - Sandalus niger - male Beetle with antlers - Sandalus niger - male Beetle with antlers - Sandalus niger - male Beetle with antlers - Sandalus niger - male

Interesting!
We take it this is the male? Quite the set of chompers on him!

 
Male
Yes this is the male with the large expanded antennae. Much more common to see the males than the females in my experience.

Moved
Moved from ID Request.

 
?niger
Great photos! These things are not commonly seen. I think it's niger based on the lateral margin of the pronotum being more rounded (or at least that's what I think the three images show). Compare to and please read my comments under . I have little data to back this up but based on the very few specimens of both that I've personally seen in the field (1 niger and 4 petrophya) I think that niger may have a more midwestern distribution and also flies later in the year as compared to petrophya.

 
Thanks, Frank
We added two closer crops of the pronotum and lightened them some so that maybe you can see the edge better.

 
S. niger
The straight thoracic shape is pretty diagnostic for S. niger. It's more pentagonal in S. petrophyta.

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