Polyrhachis armata

The name says it: this is one of the more prominently spined members of the genus, so the armoured workers are the real draw. It is a hardy tropical ant that forgives early mistakes, and with no sting and only a mild bite it stays calm to handle and observe. The colony settles at a manageable yet rewarding size for a home setup. A good fit for a beginner who wants strongly armoured workers and a striking look without a difficult keeping routine.

Armata is a sugar-loving omnivore, tending honeydew and sweet liquids while hunting insects to feed the brood. Keep a carbohydrate source available at all times and offer protein two to three times a week; it takes no seeds.

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

Found the queen in a test tube and move on once the first workers cover the floor. This tropical, well-armoured climber prefers a moisture-holding nest such as aerated concrete (Ytong), gypsum or a hybrid box kept damp, with a moist or planted arena offering twigs and bark. Colonies stay modest, so a compact nest early keeps a small group from rattling around. Keep a firm fluon (PTFE) or oil barrier, or talc and water, around the rim. An ANTonTOP formicarium or starter kit comes humidity-matched with arena and barrier together.

There is no hibernation, so keep it warm and active throughout the year. A tropical species, armata prefers nest 20-26 °C and arena 22-32 °C, with nest humidity 55-70% and arena 40-60%. Warm one end of the arena to set up a gentle gradient the colony can move along.

Spiny ants grow at a moderate tropical pace, with a single queen heading a colony that can reach 500-5000 workers over time. Your colony arrives as the queen with her workers and brood, ready to settle into its nest.

• The name armata means “armed”, a fitting label for one of the more heavily spined members of an already spiny genus.
• Those spines are passive defence, letting unarmed Polyrhachis workers resist predators without any sting.
• The genus is a master of silk construction, with many species weaving leaf nests using silk squeezed from their larvae.
• Polyrhachis is found right across the Old-World tropics and into the Pacific, one of the most widespread and varied ant lineages of the region.

Is this a good beginner ant?

Yes. It is rated Beginner, hardy and has no sting.

Does Polyrhachis armata need a winter rest?

No, it is tropical, so keep it warm and active year-round.

Does armata sting or just bite?

No, there is no sting and only a mild bite.

How big does an armata colony get?

A single-queen colony can grow to 500-5000 workers.

How large is the armata queen?

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

How fast does it grow?

Growth is moderate for a tropical spiny ant.

What does this spiny ant eat?

Sugar water, nectar or jelly and fresh insects; it does not take seeds.

Will the ants arrive alive?

Yes. Queen, workers and brood ship 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.