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Photo#810794
I found this huge hornet after looking closely at a tree that was split in half by a storm.  - Tremex columba - female

I found this huge hornet after looking closely at a tree that was split in half by a storm. - Tremex columba - Female
Ontario, Canada
July 24, 2013
Size: 2 inches?

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I found this deceased female Tremex after looking closely at a tree that was split in half by a storm.  - Tremex columba - female I found this huge hornet after looking closely at a tree that was split in half by a storm.  - Tremex columba - female I found this huge hornet after looking closely at a tree that was split in half by a storm.  - Tremex columba - female

Oh I see now, thanks
Oh I see now, thanks

Here, this female is ...
... depositing eggs into the wood. Note the ovipositer rotated down and into the surface of the wood. The ovipositor sheath trails posteriorly. I s'pect.

Moved
Moved from ID Request.

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