Goliath Beetle

The heaviest insect

Goliath beetles hold the record for the heaviest insect on earth — but only as larvae. The fat, grub-stage larva can reach 100 grams, substantially heavier than the adult beetle. The adult males are impressive in their own right: up to 110 mm long (the length of a large mouse), they are the largest beetles by mass at the adult stage, though longhorn beetles can exceed them in length. Their striking black-and-white patterning is thought to mimic the colouration of larger, more dangerous insects.

Flight and horn

Male goliath beetles have a Y-shaped horn on the head used in combat with other males over feeding and mating sites. Despite their bulk, adults are capable of strong, buzzing flight. The sound of a large goliath beetle in flight is audible from several metres away — a loud, helicopter-like buzz produced by the wings beating beneath the hard elytra (wing cases), which remain partly closed during flight.

Larval diet and care

In captivity, goliath beetle larvae are fed high-protein foods — dog food, chicken feed, and dried pet food — which accelerates growth. In the wild, larvae consume decaying wood and animal matter on the forest floor over 6–12 months. They pupate in a hard soil cocoon lined with secreted material.

Cultural significance

Goliath beetles are harvested and eaten in parts of equatorial Africa — the large larvae are roasted or fried and considered a nutritious delicacy. They are also widely collected and traded as dried specimens and for the insect-keeping hobby.