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Photo#546244
large black beetle with appendage?! - Prionus laticollis - female

large black beetle with appendage?! - Prionus laticollis - Female
Fairfield, Somerset County, Maine, USA
July 15, 2011
Size: 1.875 inches
Was found at edge of forest on dead leaf littered area.
Had strange long thing coming out of it and moving a bit. Is this part of the wings?
I could not get it to stay on it's back so no ventral picture but it had rusty colored bands between the black segments.

Images of this individual: tag all
large black beetle with appendage?! - Prionus laticollis - female large black beetle with appendage?! - Prionus laticollis large black beetle with appendage?! - Prionus laticollis

Moved
Moved from ID Request.

Female Broad-necked Root Borer.
This is a female of Prionus laticollis. The "appendage" is not a stinger but an egg-laying organ. She also everts it to expose a gland that emits a pheromone that attracts males. These are not pests, despite the name.

 
thanks!
I did notice on one side of the organ was what looked like a little breathing tube...maybe that was emitting the pheromone? You can see it in the picture between the color change...

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