Pheidole megacephala

Originally from Africa and now found across the tropics, this is the big-headed ant that conquered the world, and it brings that drive to a tank. Its shared-queen colonies expand at pace and become some of the most populous in the genus, with a strong major caste backing up the foragers. It works both day and night, so there is almost always something moving in the arena. Robust and easy to please, it forgives beginners while keeping them busy, since the sheer growth means you will be upgrading housing more often than you expect. A great pick for anyone who wants a huge, energetic colony.

A bold generalist, it sweeps up sugars, honeydew and almost any protein it finds, with the majors breaking down tougher items for a constantly hungry brood. Keep a sweet source out at all times and offer insects often to match its rapid pace.

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

Found the queen in a test tube, but plan to rehouse early because this colony fills space fast. It likes a damp nest, so move it into a moisture-holding aerated concrete (Ytong), gypsum or 3D-printed home kept humid at one end, and add modules as soon as about two-thirds is full. The minors are tiny and well known for escaping, so seal everything and keep the arena rim coated with fluon, oil, or talc and water. ANTonTOP formicaria and starter kits are sized for high-growth colonies and supply the nest, arena and barrier together.

This species takes no winter rest, so keep it warm and feeding all year. Keep the nest at 24-27 °C and the arena at 25-29 °C, with humidity of 60-75% in the nest and 50-65% in the arena. Heat one end only so the colony can choose its spot along a gradient. Brood develops in roughly 3-5 weeks at 26-28 °C, around 38 days at 26 C and stretching to 78 days at a cooler 22 C, so warmth visibly speeds things up.

This is one of the fastest growers in the genus, climbing toward 50,000 workers as multiple queens lay together and foragers work day and night. Development swings with temperature, from about 38 days at 26 C out to 78 days at 22 C. You receive a queen, or more than one, with workers and brood, ready to expand quickly.

• This is the African big-headed ant, listed among the world’s 100 worst invasive species for the way it overruns new regions and crowds out native ants.
• Established populations can link many nests into vast supercolonies that act almost as one.
• The genus Pheidole itself is enormous, with well over a thousand species, but few have travelled as far as this one.
• Workers forage both day and night, which helps the colony exploit food around the clock and outcompete rivals.

Is Pheidole megacephala good for beginners?

Yes, it is rated Beginner, tough and easy, though its fast growth keeps you busy with upgrades.

Does it need hibernation?

No. It is tropical with no hibernation, so keep it active and feeding all year.

Does it sting?

It has a sting and a mild bite, but it is gentle and not a concern for keepers.

How big can the colony get?

Up to 50,000 workers, one of the largest in the genus.

How large is the queen?

The queen is 6-8 mm; workers are 2-3 mm and majors 4-6 mm.

How fast does it grow?

Very fast. Brood develops in roughly 3-5 weeks at 26-28 °C and multiple queens drive rapid expansion.

What does it eat?

Sugar water, nectar or jelly, and insects like crickets and flies; it does not eat seeds.

Will it arrive alive?

Yes. Sent with queen, workers and brood plus a heat or cool pack, dispatched within 24 h with tracking for safe live arrival.

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.