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Beetle - Pterostichus acutipes

Beetle - Pterostichus acutipes
Deane, Letcher County, Kentucky, USA
September 7, 2014
Size: 17mm
Under a dead tree stump.

Images of this individual: tag all
Beetle - Pterostichus acutipes Beetle - Pterostichus acutipes

Pterostichus acutipes kentuckensis Barr, female
ID confirmed from specimen, now a photo-voucher. Thanks Lisa.

Curt's ID is spot on, verified in part by lack of discal punctures on interval 3 and the large sharply pointed hind trochanter which lacks setae. The characters used by Barr to separate this subspecies from the nominate form include larger eyes, a narrower pronotal base, and a distinct carina on the 1st hind tarsus.

Thanks Brad, nice to have confirmation.

thanks guys for another great addition
the site admin has been asked to grant Curt access to full-size pics

Moved from Woodland Ground Beetles.

A bright
Spot in my day!
Thanks to both of you. :)

This is Pterostichus acutipes! New to BugGuide.
It's in the subgenus Cylindrocharis. Barr (here) revised the subgenus, and described this species.
It is easily distinguished from similar rostrat*us by the very long, sharply-pointed hind trochanter, which your ventral shot shows.

There are two subspecies of acutipes, and only Ptero. a. kentuckyensis is listed for KY, so it might be safe to call it that. The other subspecies hasn't been found north of the Black Mountains in NC, which are kind of geologically removed from this location.

I'm happy I stumbled upon this... I've tried to get shots of the specimen in my collection, but my camera just isn't capable.

fullsize image
If an editor with access to the fullsize image takes a look at this, they'll be able to have a better idea.
I might have been hasty; looking now I can't tell for sure if what I see is the trochanter tip or just a reflection on the femur.
Lisa was kind enough to email me full-size images, and after looking at them and comparing to the specimen I have, I feel confident in my earlier determination. The uncompressed files reveal the hind trochanter on the right side, which appears clearly acuminate at the tip.

fullsize image
I think your account has been updated to give you access to full-size images. If not, please let me know.

I do have access now, thanks
I do have access now, thanks again John!

I am pretty sure I sent this to Brad.
But I emailed you the original images just in case it's one that didn't get sent. Thanks!

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