Hexarthrius mandibularis

Hexarthrius mandibularis is one of the world's largest stag beetle. It belongs to the tribe Lucanini, in the family Lucanidae.

Hexarthrius mandibularis
Hexarthrius mandibularis sumatranus
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Family: Lucanidae
Genus: Hexarthrius
Species:
H. mandibularis
Binomial name
Hexarthrius mandibularis
(Mizunuma, 1994)

This beetle has a dull, dark, brick reddish body. Both the legs and antennae are blackish. The most notable characteristic are the large, antler-like mandibles. These have small teeth running down the inside edge, with one large, forward-pointing pair located approximately a third of the way down from the tips. The tips are forked inward somewhat.

During the larval stage, Hexarthrius mandibularis lives in rotten hardwood, feeding on it. Later, during the imago stage, it consumes tree juice.

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