I'm interested in worldwide Tenebrionoidea with main focus on Mordellidae, Scraptiidae, Oedemeridae, Tenebrionidae, Trictenotomidae and much more. I'm more than willing to exchange Cerambycidae I got (or could provide) with beetles families cited above.
I may be able to provide some species from the eastern United States, in particular Mordellidae. If you might be interested, contact me at androwr(at)carnegiemnh(dot)org.