Sirhowy Hill Woodlands

Lasius flavus

Yellow Meadow Ant

The Yellow Meadows Ant is familiar to us as the common ant that creates anthills in grassland and downland habitats, but also appears in our gardens if the grass is not cut too often. They build a soil dome above the nest – which can extend a metre below the ground – that helps to regulate temperature and humidity. Like all ants, the Yellow Meadow Ant is social and forms colonies; the ‘workers’ are mainly active underground, however, and not often seen unless the nest is disturbed. During summer, winged adults pair and mate, the females dispersing to form new colonies.

How to identify the Yellow Meadow Ant?

The Yellow Meadow Ant is, as its name suggests, a yellowy-brown colour. It is one of several closely related and very similar species that build anthills.

How can I help?

Although the Yellow Meadow Ant is common, it has a very distinctive relationship with the declining Chalkhill Blue Butterfly. Attracted by substances that the caterpillar secretes, the workers bury the larvae of the Chalkhill Blue, unintentionally protecting it from predators. This inter-species relationship, and others like it, demonstrates the intricacies of habitats and ecosystems.
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Scientific Name:
Lasius flavus

England, Wales, Scotland and Ireland

Length: 2-3.5mm



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