Family
Lucanidae (Stag beetles)
Sinodendron rugosum. Photo: (c) Liam Singh, some rights reserved (CC BY-NC)
Stag beetles are a group of about 1,200 species of beetles in the family Lucanidae, presently classified in four subfamilies. Some species grow up to over 12 cm (4.7 in), but most are about 5 cm (2.0 in).