The Jewel Stag Beetle, (Lamprima adolphinae) is a species of stag beetle from Indonesia. They are known for the many different metallic colours they come in, such as gold, green, blue and purple. They are a relatively small species coming in at around 50mm for major males.

Lamprima adolphinae is endemic to New Guinea. The species is said to occur as a neozoon in Japan.
Characteristics

The species is characterized by a very pronounced sexual dimorphism. The males can reach a body length of 27 millimetres, the females are considerably smaller and grow up to 22 millimetres long. The pronotum and elytra are metallic green in color, the head and abdomen are coppery reddish. The pronotum is wider than long and reaches the width of the elytra. The male's body surface is smooth and shiny, with sparse, inconspicuous spots.

Lamprima adolphinae occurs in many different color variants, especially in bred animals. For example, there are breeding forms in blue, red, black and other colors.

The animals feed on tree sap and overripe fruit. The females lay their eggs in rotten logs. To do this, they make tunnels in the dead wood. The larvae live and feed on rotten hardwood. Depending on the temperature and available food, they need 9 to 13 months to develop. The male larvae can reach a length of up to 60 millimeters, the female larvae up to 40 millimeters.