How long does a Tapinoma magnum queen live?

A Tapinoma magnum queen lives approximately 2-4.

How does Tapinoma magnum found a colony?

Foundation type: Dependent polygynous — Polygynous: Yes.

What temperature and humidity does Tapinoma magnum require?

Temperature: 22-28 — Humidity: 50-70.

Is Tapinoma magnum suitable for beginners?

Difficulty level: 4/5 (advanced).

Tapinoma magnum

Scientific name

Tapinoma magnum

Origin

Mediterranean (introduced and invasive in northern Europe)

Natural climate

Mediterranean, adaptable

Queen size

4-5

Worker size

2-3

Queen lifespan

2-4

Founding

Dependent polygynous

Polygynous

Yes

Diet

Honeydew, sugar, insects

Hibernation

Humidity

50-70

Temperature

22-28

Max colony size

100,000+

Difficulty

The Mediterranean invader

Tapinoma magnum is one of the most problematic ants in Europe in recent decades. An invasive species native to the Mediterranean basin, it is spreading northward, rapidly colonising new territories (Germany, Switzerland, Belgium…).

Its ecological success comes from its social structure: polygynous supercolonies connected across hectares, with no aggression between workers of different nests. Each nest holds dozens of queens, and the system can total hundreds of thousands of workers.

An invasive species — risky to keep

NEVER release Tapinoma magnum into the wild outside its native range. Any escape can potentially colonise the surroundings for good. A drastic escape barrier is essential: oil + Fluon, a double barrier. Think carefully before keeping this species.

Behaviour and biology

An ultra-polygynous, dependent species: the queen cannot found alone. She needs workers from the start — in practice, you collect a portion of an existing nest (queen(s) + workers) rather than an isolated queen. No standard observable nuptial flight.

It gives off a characteristic rancid-butter smell when a nest is disturbed: it’s one of the most odorous ants in Europe. The smell comes from anal-gland secretions used for marking and defence.

Identifying Tapinoma magnum

A small blackish-brown ant of 2-4 mm, with a paler gaster at the rear, and quick, jerky movements. The fruity-rancid smell released when crushed is diagnostic. Confused with Tapinoma erraticum and T. nigerrimum — genetic distinction is often needed.

Keeping

22-28°C, humidity 50-70%. No hibernation required (Mediterranean climate). Explosive growth: plan big from the start. Feeding: honeydew, sugar, dead insects. Ytong or plaster nest with multiple chambers. Reserved for informed, responsible keepers.

Frequently asked questions

How big is Tapinoma magnum?: Queen: 4-5 — Workers: 2-3.
How long does a Tapinoma magnum queen live?: A Tapinoma magnum queen lives approximately 2-4.
How does Tapinoma magnum found a colony?: Foundation type: Dependent polygynous — Polygynous: Yes.
What does Tapinoma magnum eat?: Diet: Honeydew, sugar, insects.
Does Tapinoma magnum need a diapause (hibernation)?: Diapause: No.
What temperature and humidity does Tapinoma magnum require?: Temperature: 22-28 — Humidity: 50-70.
How large does a Tapinoma magnum colony grow?: Colony size: 100,000+.
Is Tapinoma magnum suitable for beginners?: Difficulty level: 4/5 (advanced).