@The Mantis Menagerie Simply put...How can you identify the females of large, US stag beetle species? I have not seen a good guide that explains the differences.
Thank you! I can now be certain in my identifications.@The Mantis Menagerie Simply put...
1. Lucanus elaphus is reddish-brown colored, and has triangular clypeus.
2. L. capreolus is reddish-brown colored, and has yellow marks on legs (ventrally).
3. L. placidus is very similar to L. capreolus in general morphology with dark brown to black color.
4. L. mazama has a lot of punctures on all over the body, with dark brown to black color.
I will upload pictures of all four species later on.