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Photo#91466
Tiny Black Beetle - Laricobius nigrinus

Tiny Black Beetle - Laricobius nigrinus
Seattle, King County, Washington, USA
December 30, 2006
Size: approx 3mm
I put this here because I don't have any idea what kind of beetle this is. It seemed to have "pitted" elytra, but with my eyes, I couldn't see much else. It was sunning itself on the exposed roots of my Western Hemlock. I'm inclined to think it's a Carabid, but it was very sluggish...
It's not very warm here, right now, though. Sorry for the resolution, I forgot to put my camera on RAW format.

Images of this individual: tag all
Tiny Black Beetle - Laricobius nigrinus Tiny Black Beetle - Laricobius nigrinus Tiny Black Beetle - Laricobius nigrinus Tiny Black Beetle - Laricobius nigrinus

Just correcting the spelling,
Just correcting the spelling, it's Laricobius "nigrinus".

 
Fixed
Thanks, Crystal.

Moved
Moved from Beetles.

Not inclined
Notice the slightly clubbed antennae. No car*abid has them. The neat rows of fairly long setae are distinctive, but of what I'm unsure. For a wild guess I'm going to say this is Lari*cobius nigr*inus (family Dero*dontidae) and it has been snacking on Wo*oly Adel*gids that are afflicting your Western Hemlock.

 
I'll move it
For the time being, I'll move it to the Order page. I'll see if I can find it again tomorrow, if it's sunny.

 
Hi Cheryl,
It would be nice to get some more detailed photos of this species but it looks like my wild guess is correct. This is the derodontid Laricobius nigrinis. I found some images and plenty to read on other sites:
http://www.gainvasives.org/hwa/biocontrol.html
http://www.insectimages.org/search/action.cfm?q=Laricobius
http://www.dcnr.state.pa.us/forestry/woollyadelgid/pestmanagement.aspx
http://www.mountaintimes.com/mtweekly/2005/0120/goodbugs.php3

This is a native species in your area but it has been reared in laboratories and released widely as a biological control agent for Wool*y Ad*elgid, which infests hemlocks.

I'll move your images because this is a new bugguide species but maybe you can get some better ones and frass these later.

 
Thank you so much!
I'll keep my eyes peeled.

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