Cerocranus extremus, Kuschel 2008
rather comical positioning :P
Update:
I found several of these at Cedar Bog again this year. The last one might be Hexatoma brevicornis, so if you have expertise, please D.
https://www.inaturalist.org/observations/172420801
https://www.inaturalist.org/observations/172420799
https://www.inaturalist.org/observations/172420798
https://www.inaturalist.org/observations/175243975
Note: I have photographed this Hexatomini at Cedar Bog in Champaign County, Ohio for at least 17 years. Always in the same area.
I've added two other observations; one from back in 2004.
Links to those observations:
https://www.inaturalist.org/observations/88273567
https://www.inaturalist.org/observations/84762884
Here's an observation this year (2022) with better pics of wing venation. Same location.
https://www.inaturalist.org/observations/124010854
Breached at least 8 times over the course of a few minutes
Lucanus right vs Dorcus left
Not absolutely certain.
Pima County, Arizona, US
The largest species of southern Primorye. On the left is Anax julius, on the right is Epophthalmia elegans.