Pheidole aglae

The fun of Pheidole is the split workforce: tiny minor workers handle the day-to-day while the standout majors, the big-headed soldiers, lumber out with oversized heads to crack tough food and defend the nest. This South American species is fully tropical, so there is no hibernation to manage, just steady warmth all year. It grows into a busy, populous colony with two clearly different castes to watch side by side, and the workers are quick, eager foragers that swarm food fast, so feeding time is always lively. Rated beginner, it is one of the easiest and most entertaining ways into the big-headed ants.

A busy omnivore with two jobs split between castes: nimble minors gather food and tend the brood, while big-headed soldiers crack open tougher items. Keep a sugar source always out and feed protein two to three times a week for fast brood growth.

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

Found the colony in a test tube and move it into a formicarium once you have a solid worker force. This tropical big-headed ant likes a damp nest, so use a moisture-holding nest in Ytong, gypsum or acrylic kept reliably damp, with a heated arena alongside; keep it compact early so a young colony is not lost in empty space. Upgrade nest size as numbers push into the thousands. Pheidole are tiny and determined escapers, so keep a fresh fluon (PTFE) rim, oil, or talc and water on the arena at all times. ANTonTOP starter kits bundle a nest, arena and barrier sized for a fast-growing colony.

A tropical species that stays active all year. Run the nest at 24-27 °C and the arena at 25-29 °C, with nest humidity 65-80% and arena humidity 55-70%. Heat one end only for a warm-to-cool gradient so the queen and brood can settle where it suits them. No hibernation is needed: simply keep feeding and hold the warmth steady.

Pheidole are fast growers, and once the first soldiers appear the colony tends to take off toward around 10,000 workers. Be ready to scale the nest up quickly. You receive a queen with workers and brood, set up to move into a warm formicarium.

• Pheidole is the most species-rich ant genus on Earth, with well over a thousand described species making up close to a tenth of all known ants.
• The big-headed soldiers are not just for show: their massive jaw muscles let them mill hard seeds and dismember prey that minors cannot handle.
• A few Pheidole species even produce a giant supermajor caste on top of the usual soldiers, an extreme of the genus’s split-caste body plan.
• The genus was the subject of a landmark monograph by E. O. Wilson, who personally described hundreds of its New World species.

Is Pheidole aglae good for beginners?

Yes, it is rated beginner and is one of the easier big-headed ants to start with.

Does this big-headed ant need hibernation?

No, it is tropical and stays active all year.

Does Pheidole aglae sting or bite?

It has a sting and a mild bite, but it is harmless to keepers in practice.

How big does a Pheidole aglae colony get?

Up to around 10,000 workers.

How large is the queen, and how big are the soldiers?

The queen is 7-8 mm; minor workers are 2.5-4 mm and soldiers 4-5.5 mm.

How fast does the colony grow?

Fast, especially once the first soldiers emerge.

What do these big-headed ants eat?

Sugar water or jelly plus insects like crickets and flies for the brood.

How is it shipped and will it arrive alive?

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

Care guide. See also our Pheidole ants guide.