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Bark-Gnawing Beetle - Tenebroides corticalis

Bark-Gnawing Beetle - Tenebroides corticalis
Near Ruraldale, Upshur County, West Virginia, USA
April 15, 2005
Found under bark. Bark-Gnawing Beetle family, Trogossitidae? If so it is only the second species in this family for the guide. I don't have any experience with this family, so confirmation, correction, or elaboration would be appreciated.

Moved from Tenebroides laticollis. I think corticalis is a better fit.

Moved tentatively
Moved from Tenebroides.

Tenebroides sp.
Yep, it's a bark-gnawing beetle: Tenebroides sp. (Trogossitidae: Trogossitinae). There are apparently 21 species in North America, and they all look pretty much like this one, so I wouldn't hazard a guess on a species name. Nice to have the representation, though!



Thanks, Zack
Thanks, Zack! I had paused by the drawing of T. mauritanicus in my Dillon & Dillon, but then saw that that particular species is a pest of stored grains. Then again, maybe they have a niche in the non-human world too, under bark.

But I am just glad to get confirmation of family from you and Phillip, and the genus is just icing on the cake! Thanks again.


Stephen Cresswell
Buckhannon, WV

Yes, T. mauritanicus is an introduced flour/grain pest, but many/most(?) of our native species can be found under bark. There are 12 spp. listed from Florida.

These can be confusing - I've seen these ID'd as Stag Beetles [Lucanidae], which is somewhat understandable - they have prominent mandibles and have antenna that look almost Lucanid like, but you're right.

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