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Xixuthrus Heros

Xixthrus heros (2).png

Xixuthrus heros

Xixuthrus heros, or the Giant Fijian long-horned beetle is one of the largest beetles belonging to the Cerambycidae family. It also belongs

to the Coleoptera order.


Certain specimens of this species grow up to 15 mm, excluding the legs and antennae. It is the second largest of all beetles, being passed by Titanus giganteus. The antennae are composed of 10 segments each, Xixuthrus heros has double-pronged sickle-shaped claws, the tibia is composed of heart-shaped plates. The exoskeleton is coated with a bronze-colored pigmentation With black striped longitudinal lines.

Life cycle[]

Males of this species are very territorial, and will fight each other for control of good egg-laying sites. The females will lay eggs in rotting wood, once the larva hatches, it continuous to consume rotting wood as it resides among the wood as it consumes the host from inside, months pass as the larva pupates and Xixuthrus heros emerge from the rotten trunks of the host.


When threatened, X. heros will create a high-pitched hissing noise by squeezing air out from under their elytra this is to scare and confuse predators.


Xisuthrus heros eats leaves and wood, making it herbivorous and xylophagous.


Like the name suggests, this longhorn beetle is native to Viti Levu in Fiji.

Other information[]

Many websites say that this species is extinct, but it is not.