Antkeeping
All species Guide

Acorn ant

Temnothorax nylanderi

Beginner Rarely more than a few hundred workers
Temperature 20–24 °C
Humidity 50–60 %
Hibernation October – March

Where it comes from

Range
Western and central Europe, in woodland leaf litter
Size
Workers 2–3 mm, queen 3–4 mm
Queens
Usually one queen

Keeping them

Diet
Sugar water and small insects
Founding
Fully claustral — the queen needs no food until her first workers
Brood development
Egg to worker in roughly 6–8 weeks at 22 °C
Nest
A hollow acorn, a walnut or a very small nest — they want it tight
Wintering
7–11 °C

A whole colony fits inside one acorn, which makes this the species to keep when you have no room for a formicarium. It never outgrows the shelf you put it on.

Check it yourself

General guidance from the usual beginner references — treat it as a starting point, not as a rule your colony has agreed to.

Start a colony with this species