Odontolabis dalmani is a species of beetles belonging to the family of Stag Beetles (Lucanidae).
Odontolabis dalmani can reach a length of about 4–10 cm.
The basic colour is dark brown, with a fine pubescence.
The large mandible of males are used to wrestle each other for mating or food.
These beetles are nocturnal.
Adults feed on tree sap and decaying fruits.
The life cycle lasts about 22 - 26 months.

Sarinbuana Eco Lodge, Mount Batukaru Area, Bali, Indonesia, 18 October 2011