Cataglyphis savignyi

This is the heavyweight of the desert runners. Hailing from Egypt and across North Africa and the Middle East, Cataglyphis savignyi grows into a large colony whose workers show a striking range of body sizes, so the arena is full of contrast as well as motion. Its long-legged foragers cover hot, open ground at pace through the day, making for a scout-heavy display that rarely sits still. It is not an expert-only ant, but the heat and dry arena it needs put it a notch above beginner. For a keeper who wants scale and daytime drama, it delivers both.

A big desert scavenger that fuels its workers on sugars and drives brood growth with insect protein, foraging singly across hot, open country. Keep a sugar source available at all times and offer protein two or three times a week.

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

Start the queen in a test tube and upgrade only when the first nanitics floor it. This large desert species needs a deep, dry nest with generous chambers, aerated concrete or acrylic over sand, kept arid so growing brood never sits in moisture. Warm one end of a big sandy arena for a hot forage patch and a cooler retreat. These are among the fastest ants you can keep, so a solid rim of fluon (PTFE), oil, or talc and water is a must. ANTonTOP formicaria and starter kits combine nest, arena and barrier in one set.

A hot, dry regime keeps this large species happy. Hold the nest at 24-28 °C and let the arena run to 28-36 °C, with nest humidity at 40-55% and the arena drier at 20-40%. Warm one end of the setup to form a gradient so the colony can choose where to sit. Wintering is a light diapause, a brief cool rest: the ants may slow down, but you keep feeding and leave the temperature where it is.

Once workers are out, the pace runs steady to brisk and, under good heat, the colony scales toward 10,000 workers. Consistent warmth and protein push the numbers upward. Your colony arrives as a queen with workers and brood, ready to fill a large arena with striking size variation between the smallest and largest foragers.

• This is one of the larger Cataglyphis, with workers reaching up to 17 mm and queens up to 21 mm.
• The species name honours Jules-Cesar Savigny, the naturalist who documented Egyptian wildlife during Napoleon’s expedition to Egypt.
• Cataglyphis are celebrated for their navigation, running a straight homeward line by combining a sky compass with an internal odometer that counts their strides.

Is Cataglyphis savignyi good for beginners?

It is Intermediate, manageable but heat-dependent, so a little experience helps.

Does Cataglyphis savignyi need a winter rest?

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

Does this large desert ant sting or bite?

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

How big does the colony get?

Up to 10,000 workers under one queen.

How large does the queen get?

The queen is 17-21 mm, with workers at 5-17 mm.

How fast does it grow?

Steady to brisk once the first workers appear, with good heat and protein.

What does it eat?

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

Will my Cataglyphis savignyi 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.