Cataglyphis rubra

Its defence is the talking point: rather than a sting, Cataglyphis rubra turns and sprays formic acid, a classic Cataglyphis trick that is fascinating to see in the arena. The species has its type locality in Algeria and ranges right across North Africa and the Middle East, so it is firmly a hot-climate ant that wants a dry arena. Helpfully, the colony stays on the smaller side at maturity, which keeps housing simple even as it fills out. Pair bold reddish diurnal foragers with that easy footprint and you have a desert species that earns its keep without dominating the room.

A daytime desert scavenger that keeps workers running on sugars and feeds the brood on insect protein, collecting fallen prey across open ground. Keep a sugar source out at all times and offer protein two or three times a week.

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

Found the queen in a test tube, then move her into a small nest once the first workers floor it. This is one of the more humidity-tolerant Cataglyphis, so a compact aerated-concrete nest kept lightly damp at one end works better than a bone-dry build, with a sandy arena warmed at one end. Keep the setup small for the modest colony cap. They are quick runners, so secure the rim with fluon (PTFE), oil, or talc and water. ANTonTOP formicaria and starter kits give a right-sized nest, arena and barrier in one set.

A touch more humid than the larger desert Cataglyphis. Keep 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%. Warm one end of the arena to give the colony a choice of spots rather than a uniform temperature. Wintering is a light diapause, a brief cool rest: the colony may slow, but you keep feeding and there is no need to lower the temperature hard.

Growth is steady rather than dramatic, settling into a neat colony of 500 to 2,000 workers under stable warmth and regular protein. Because it never reaches a huge population, it stays easy to house and observe even at full size. Your colony arrives as a queen with workers and brood, ready to settle straight into a warm, slightly humid setup.

• Like other Formicinae, this species has no sting at all and instead sprays formic acid from the tip of the gaster in defence.
• Cataglyphis are heat specialists, running their foraging trips in the searing midday window that keeps rival ants indoors.
• They find their way home by path integration, reading the polarisation pattern of the sky and tracking how far they have travelled.

Is Cataglyphis rubra good for beginners?

It is Intermediate, not difficult, but it wants warmth and the right arena conditions, so some experience helps.

Does Cataglyphis rubra need a winter rest?

Only a light diapause, a brief cool rest; keep feeding and there is no need to drop temperatures hard.

Does Cataglyphis rubra sting or spray?

No sting at all; it sprays formic acid and can give a mild bite, but there is no sting.

How big does the colony get?

A tidy 500-2,000 workers under one queen.

How big is the queen?

The queen is 10-12 mm, with workers at 5-9 mm.

How quickly does the colony build up?

Steady, given consistent warmth and protein.

What does it eat?

Insects such as crickets and flies plus sugar water, nectar or jelly; mealworms in moderation.

Will my Cataglyphis rubra arrive alive?

Yes, it ships as a queen with workers and brood, with a heat or cool pack, dispatched within 24 hours 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.