Polyrhachis mitrata

This is the kind of ant that makes keeping rewarding from the start: an arboreal Indonesian forager armed with the curved spines that give the genus its name, moving slowly and deliberately as it explores. It is forgiving to watch up close, with no sting and a bite that barely registers, and because it accepts multiple queens founding tends to be stable and the colony builds steadily. A relaxed, good-looking species that suits anyone new to tropical ants.

Mitrata feeds as an arboreal omnivore, with workers drinking sweet liquids for their own energy and carrying insect prey back to feed the queens and brood. Keep a sugar source available at all times and offer protein two or three times a week.

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

Start a founding colony in a test tube or compact starter nest, keeping one chamber damp the workers can tend. Move up once the first nanitics fill the floor and brood is constant. A humid nest in aerated ytong or acrylic matches its arboreal, moisture-loving biology far better than a dry block. Keep them in with a well-dressed arena rim of fluon (PTFE), oil, or talc and water, as these are agile climbers. ANTonTOP formicaria and starter kits are sized for that growth, supplying a matched humid nest, arena and barrier together.

Heat one end only so the ants can choose a gradient and self-regulate between warm and cool zones. Hold the nest at 20-26 °C and the arena at 22-32 °C, with nest humidity at 55-70% and arena humidity at 40-60%. This is a tropical species with no hibernation, so keep it active and fed all year round.

Polyrhachis colonies grow at a measured pace rather than exploding, building toward a mature size of roughly 500-5000 workers. You receive the queen with workers and brood, ready to move straight into a humid nest and foraging arena.

• Polyrhachis larvae spin silk, and many arboreal species weave it into nests among living leaves, holding the grubs as living tools during construction.
• This species is polygyne, so a colony may share several egg-laying queens, which tends to make founding more robust.
• Like all Polyrhachis it is stingless, defending itself with formic acid, a quick bite and the spines that give the genus its name.

Is Polyrhachis mitrata good for beginners?

Yes, it is rated Beginner, calm, and does not require any cool-down period.

Does this Indonesian spiny ant need a winter rest?

No, it is tropical and stays active year-round; just keep feeding and do not lower the temperature.

Does Polyrhachis mitrata sting or bite?

No, it has no sting and only a mild bite.

How large does a mitrata colony get?

A mature colony reaches roughly 500-5000 workers.

How big is the queen?

The queen is about 11 mm, with workers at 6-9 mm.

How fast does this spiny ant grow?

Growth is steady rather than explosive, typical for Polyrhachis.

What does it eat?

Sugar water or nectar for energy plus small insects like crickets and flies for protein.

How is it shipped?

You get the queen, workers and brood with a heat or cool pack, sent within 24 hours with tracking.

Will it arrive alive?

Colonies are packed for transit and dispatched with a season-matched heat or cool pack to keep them safe in transit.

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.