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Pterostichus melanarius - male

Pterostichus melanarius - Male
Lancaster County, Pennsylvania, USA
August 25, 2012
Size: 16mm

Pterostichus melanarius in Maryland
We get these guys all over the ground floor of our house in October. They sneak in along with the other house-tolerant insects with the first few cold nights, munch down on the other bugs they can find and then pass away.

Easy to see as they respond rapidly to any bright light that' stunned on in a dark room. With a minute or two the first ones appear and then in 5-10 minutes you'll have a Convention!

Moved from Pterostichus.

melanarius?? looks intriguing to me...
his elytra are so parallel as to make me think he might have functioning wings (some populations are wing-polymorphic). dying to hear from the experts.
a brighter pronotal closeup would help

Moved from ID Request.

Agree with Pterostichus melanarius
as most likely based on the combination of body length, elongated elytra, and a pronotum with rounded (non-sinuate) lateral border that suddenly ends posteriorly in a protruding "tooth" (denticulate).

thanks again, Peter.

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