Dorcus rectus, the little stag beetle, is a species of beetles in the family Lucanidae.

It can be found in China(Liaoning), Korea, Japan, Taiwan and Russia.

[2][3] These beetles have a distinctive red shell that separates them from Dorcus curvidens.

Males of this species have been observed to have mandible trimorphism,[1] a characteristic that has only been described in two species of Lucanidae—with the other one being Odontolabis cuvera—"and a small number of other invertebrates" as of 2017.

This stag beetle article is a stub.