Camponotus sayi

This eastern North American carpenter ant is a gentle introduction to keeping a temperate species. You get visible caste contrast as it grows, the soldiers standing out against the smaller workers, but without the extreme size range that some carpenter ants run to, which keeps housing manageable. The intermediate rating is really about the brief cool diapause it appreciates rather than year-round warmth, an easy bit of seasonal timing rather than a strict hibernation. It handles standard carpenter-ant care well and rewards steady feeding with a satisfying long-term colony.

This carpenter ant feeds on sugary liquids for everyday energy and takes insects to fuel brood growth through the warm months. It is straightforward to feed, with a steady sugar source and the odd feeder insect doing the job.

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

Found this small carpenter ant in a test tube and shift to a proper nest only when it outgrows the tube, around thirty to fifty workers. An Ytong or acrylic nest with a small moist zone and dry chambers fits its modest humidity needs, joined to an outworld. It takes a light cool diapause, so keep feeding lightly through the brief slow spell rather than chilling it. Seal the rim with fluon (PTFE), mineral oil, or talc and water. ANTonTOP starter kits combine nest, arena, and barrier for a smooth founding stage.

Keep the nest at 20-24 °C and the arena at 22-28 °C, with nest humidity 50-60% and arena humidity 30-50%. Warm only one end so the ants can self-select their temperature. Rather than a full hibernation it takes a light diapause: the colony slows during a brief cool spell, but you keep feeding lightly and there is no need to drop the temperature sharply.

This carpenter ant grows at a slow to moderate rate, gathering pace once the first generation of workers is out and on its way toward around 5,000 workers. The colony ships as a queen with her workers and brood, ready to settle in.

• The species honours Thomas Say, the early naturalist often called the father of American entomology.
• It is one of the smaller-bodied North American carpenter ants, yet still shows the genus’s clear minor-to-major caste range.
• Carpenter ants nest in wood and cavities but excavate rather than eat the wood, unlike termites.
• As a Formicinae ant it has no sting and uses sprayed formic acid for defence.

Is Camponotus sayi good for beginners?

It is rated Intermediate; manageable if you can offer a short cool diapause.

Does Camponotus sayi need a winter rest?

It takes a light diapause, a brief cool rest where it may slow down; keep feeding and you need not lower the temperature.

Does the eastern carpenter ant sting or bite?

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

How big can the colony get?

Up to 5,000 workers.

How large is the queen?

The queen is 12-13 mm, with 4-7 mm workers and 9-12 mm majors.

How fast does it grow?

Slow to moderate, accelerating after the first workers mature.

What does it eat?

Sugar water or jelly plus insects such as crickets and flies.

Will it arrive alive?

Yes, sent as a queen with workers and brood, with a heat or cool pack, dispatched within 24 h 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.