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I think they look more like Corticaria species (hard to say, the image can't be zoomed in without losing definition) or something similar.  These would be beetles that belong to the Latridiidae.  Older literature/name is listed as Lathridiidae.

If a better image could be produced, it would be easier.  Macro setting on camera/phone?  Specimens available to look at?

On Tue, 6 Dec 2011 22:18:24 -0500, [email protected] wrote:

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Ground beetles come in a variety of sizes.


-----Original Message-----
From: Jones, Robert (Ryan) (Ryan)
To: '[email protected]'
Sent: Tue, Dec 6, 2011 6:18 pm
Subject: RE: [pestlist] Insect ID

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I should have sent measurements, although that might not change your ID. The specimens are approximately the size of a flea (about  1/8 inch or 2/10 centimeter long). Is there a species of ground beetles this small?
 
Thanks for your time with this.
 
From: [email protected] [mailto:[email protected]] On Behalf Of [email protected]
Sent: Tuesday, December 06, 2011 6:07 PM
To: [email protected]
Subject: Re: [pestlist] Insect ID
 
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Ryan -
 
They appear to be ground beetles (Carabidae).  In warm weather, they often are attracted to exterior lighting, crawl around and up the building and enter through cracks and crevices.  They are not a direct threat to collections, however their carcasses may be fed upon by carpet beetle larvae.
 
Thomas A. Parker, PhD
President, Entomologist
Pest Control Services, Inc.

-----Original Message-----
From: Jones, Robert (Ryan) (Ryan) <[email protected]>
To: pestlist <[email protected]>
Sent: Tue, Dec 6, 2011 5:56 pm
Subject: [pestlist] Insect ID
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Hello all,
 
I recently found these little guys in a historic house on property. Here are the environmental conditions:
 
·         Specimens were located almost exclusively on 2nd floor
·         Specimens were found on wood floors (unfinished) with gaps in between boards and an inaccessible void underneath
·         Specimens found  mostly under beds and on insect monitors
·         A few specimens found on a wool blanket (dead) folded on a colonial era bed
 
Any idea what these insects are and if they pose a threat to collections?
 
Thanks,
 
Ryan Jones
 
Integrated Pest Management
Specialist 
 
Colonial_Williamsburg_Logo.jpg
P.O. Box 1776
Williamsburg, VA 23187
 
(757)  220-7080
 

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