livingplanet3 wrote: ↑Tue Dec 06, 2022 11:51 pm

The differences between these two species are rather subtle. It does appear however, that you have correctly identified the specimens in your photo (with spectabilis on the left, and lacordairei at right).

Hello, thank you for your answer, also the pictures helped a lot .

Anyone at least able to point me towards someone with an extensive knowledge about lucanidae?

Hello, As the title suggests I'd love to clear out what the differences are between these two species. Am I right to assume it's mainly the orange patch on the head and the the teeth position on the mandibles? Am I right to say the specimen on the left is O. spectabilis and on the right lacordarei? ...