Myrmecia pyriformis

Myrmecia pyriformis sits at the big end of the genus, a heavyweight bull ant from Australia with the menacing look and alert eyes the group is famous for. It is nocturnal, so the colony does its hunting after dark, tracking prey by sight and reacting sharply to disturbance at the entrance. Brood takes its time to develop, so the early colony rewards patience as it builds. Founding is semi-claustral, with the queen foraging while raising her first workers. The Crazy rating and a seriously painful sting keep this one strictly for expert keepers after an imposing display.

A large nocturnal predator that hunts live and freshly killed insects by sight, gripping them with toothed jaws and a sting. Captured prey feeds the larvae, while foraging adults take sugar water and nectar to keep themselves fuelled after dark.

★★★ readily · ★★ moderately · ★ occasionally · ✗ not eaten

Raise the founding queen in a test tube and rehouse her once nanitics mature and patrol the arena. This big night hunter suits a ytong or hybrid nest holding moderate moisture, set beside a spacious arena to range over after dark. As a large stinging bull ant, it needs a dependable escape barrier, so coat smooth walls with fluon (PTFE) and keep talc and water on hand. ANTonTOP formicaria and starter kits deliver a matched nest, arena and barrier ready for a powerful colony.

Steady warmth suits this big night hunter: keep the nest at 20-25 °C with the arena slightly warmer at 22-27 °C. Target nest humidity of 60-75% and a drier arena at 50-65%. Heat one end alone so the colony can pick warmer or cooler ground as it pleases. Hibernation is not needed, so keep feeding and keep them active all year round.

Growth is steady rather than quick, with brood taking roughly 13-22 weeks (3-5 months) to mature into workers and a colony reaching about 1,000 over time. The early stages reward patience as the worker force slowly builds. You receive a queen with workers and brood, an established nucleus past the delicate founding period.

• This is one of the giants of the genus and among the largest ants kept anywhere, with major workers that are unmistakable.
• Pyriformis is a classic night forager, climbing trees and shrubs after dark to hunt, guided by large eyes built for low light.
• Bull ants are evolutionarily ancient, retaining solitary hunting and other primitive traits lost in most modern ant lineages.
• The genus carries venom potent enough to cause dangerous reactions in people, so the sting is far from trivial.

Is Myrmecia pyriformis good for beginners?

No, it is Crazy difficulty with a painful sting, so it suits expert keepers.

Does Myrmecia pyriformis need a winter rest?

No, hibernation is not required; keep it active and feeding year-round without lowering the temperature.

Does the bull ant sting or bite?

Yes, it has a painful sting rated Schmidt 2-3.

How big does a Myrmecia pyriformis colony get?

Up to 1,000 workers over time.

How large is the queen?

The queen measures 23-26 mm, with workers at 14-23 mm.

How fast does Myrmecia pyriformis grow?

Steadily. Brood takes about 13-22 weeks (3-5 months) to develop.

What does it eat?

Live insects such as crickets and flies, plus sugar water, nectar or jelly for energy.

Will it arrive alive?

Yes, we ship a queen with workers and brood, with a heat or cool pack, dispatched within 24 h with tracking.

Escape prevention. Coat the inner rim of every open arena with fluon (PTFE), or use talc-and-water or an oil barrier as a backup, and keep a tight, fine-mesh lid on top. Check the barrier regularly, since dust, condensation and feeding debris break a fluon line over time. Keep tubing connectors tight and seal any gaps in the nest.

Keeping reminders. Always offer fresh water and never let the nest dry out completely. Give carbohydrates continuously and protein a few times a week, and remove uneaten insect prey within 24 hours before it moulds. Keep the formicarium out of direct sunlight and away from constant vibration, which stresses a young colony. A water-filled test tube plugged with cotton makes an ideal spare incubator whenever you need one.

Before you buy – do not rehouse too early. Have a test-tube setup or a small formicarium with an outworld and a working barrier ready before your colony arrives. A founding colony grows slowly at first, which is normal. Moving a small colony into a large nest too soon invites mould, mites and stress, and the workers die off one by one. Keep the colony in its open test tube on the arena, plug the nest entrance with cotton, and open up the next chambers only once the colony fills roughly 10-15% of the space.

What we ship. Every colony ships with a live-arrival guarantee, backed by our 24h unboxing-video guarantee: if the queen does not arrive alive, we reship free. Parcels travel with DHL, InPost (PL) or EMS, with a heat or cold pack to suit the season, packed discreetly and securely. We ship across the EU and worldwide, with free shipping over the Europe threshold.