Cyclommatus elaphus is a species of the genus Cyclommatus from Indonesia. It is also the largest species of the genus Cyclommatus and can grow up to a maximum of 109 mm[8] (4.29 inches) from the tip of the
mandibles to the end of the
abdomen.
^Kim, Sang Il; Farrell, Brian D. (2015-05-01). "Phylogeny of world stag beetles (Coleoptera: Lucanidae) reveals a Gondwanan origin of Darwin's stag beetle". Molecular Phylogenetics and Evolution. 86: 35–48.
doi:
10.1016/j.ympev.2015.02.015.
PMID25732069.