Lasius niger

If ant keeping had a default starting species, this would be it. Lasius niger is the ant most UK beginners learn on, and for good reason: the queens found completely on their own, the colony tolerates a wide range of conditions, and workers forage busily enough to be genuinely entertaining to watch.

Why it’s the classic beginner ant

• Fully claustral founding — the queen needs nothing but darkness and a humid tube to raise her first workers.
• Room-temperature hardy — survives without heating, though gentle warmth speeds growth.
• Forgiving — shrugs off the small humidity and feeding errors every beginner makes.
• Abundant — queens appear across Britain during summer nuptial flights and are cheap from sellers.

Keeping notes

Found the queen in a standard test tube setup and leave her undisturbed for six to ten weeks. Once nanitics arrive, connect a small outworld and offer sugar water plus small insects. Growth is moderate at first, then accelerates — expect to size up the nest through the first year.

Hibernation is important. Native Lasius niger naturally rest through winter; give them a few months at 5–15°C. Skipping it repeatedly can shorten the queen’s life.

Watch for

• Rapid growth once established — plan nest upgrades ahead of time.
• Strong foraging drive means escape-proofing must be solid from the start.