Camponotus arnoldinus

From Sub-Saharan South Africa, this carpenter ant is at home in warmth and stays busy year-round, so there is no quiet winter season to wait through. The reward is the display: it builds steadily into a large, populous colony, and the clear size spread across the workers and majors keeps the arena worth watching as it matures. Being nocturnal, it does much of its work in the evening. The Intermediate rating comes down to getting the humidity split and steady warmth right rather than constant attention. If you want an African carpenter ant that scales well, this is a solid choice.

A carpenter-ant omnivore: workers tend honeydew and nectar for energy and bring insect prey back as the protein that grows the brood and the majors. Keep a sugar source always on hand and offer insects two or three times a week.

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

Raise the queen in a test tube while she founds, then move to a humidity-graded nest such as ytong, aerated concrete, or acrylic with a watered chamber, paired with a roomy arena. Keep one side damp and the arena drier so the colony can balance itself. Upgrade in steps once workers fill the nest and brood overflows, matching the home to the colony rather than overshooting. Coat the arena rim with fluon (PTFE), or use oil or talc-and-water. ANTonTOP starter kits handle founding and ANTonTOP formicaria cover the larger sizes.

These ants want a damp nest and a drier arena. Keep the nest at 20-26 °C and the arena warmer at 22-32 °C, with nest humidity 55-70% and arena humidity 40-60%. Heating one end into a gradient lets the colony choose its own warmth. There is no hibernation; this tropical species stays active and feeding all year rather than cooling for a winter rest.

Growth is the steady carpenter-ant kind, slow to found and then faster as workers accumulate, climbing toward up to 5,000 over time. Your colony comes as a queen with workers and brood; give it a calm founding window and the population will build from there.

• Camponotus are the carpenter ants, named for the wood galleries many species hollow out for nests.
• Sub-Saharan Africa has a broad carpenter-ant fauna, with numerous Camponotus species across its woodlands and savannah.
• They have no sting and defend themselves by biting and spraying formic acid from the tip of the abdomen.
• The genus is polymorphic, raising small minors alongside larger majors that handle heavier food and guard work in one colony.

Is Camponotus arnoldinus good for beginners?

It is rated Intermediate, so it is a good step up once you can manage a humidity gradient and warmth.

Does this South African carpenter ant need a winter rest?

No, it is tropical and active year-round, so keep feeding and warmth steady.

Does Camponotus arnoldinus sting or bite?

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

How big does the colony get?

Up to 5,000 workers.

How big is the queen of this African carpenter ant?

She measures 15-18 mm.

How fast does it grow?

Slow at founding, then steadily faster toward up to 5,000 workers.

What does it eat?

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

How is it shipped and will it arrive alive?

As a queen with workers and brood, with a heat or cool pack, dispatched within 24 h with tracking for a fast, safe 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.