Chiasognathus sombrus

Photos and remaks by M.J. Paulsen.

Link: Guide to New World Scarab Beetles-Lucanidae, Chiasognathus sombrus

This species was previously misidentified as C. beneshi. C. latreillei, or C. schoenemanni (a synonym of C. mniszechii), therefore it remained undescribed for decades. It can be distinguished from other species by its thickened middle tibiae, long galeal brush, and darker coloration.

Location: Chile; BioBio