Negro Ant - Formica fusca

This wood ant is dark brown to black in colour. The worker can be up to 6mm long.

This species is very similar to Formica lemani, which can be differentiated from F. fusca by the presence of short, stubby hairs on the promesonotal dorsum.

Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters.

F. fusca nests are usually found in rotten tree stumps or under stones in clear cut areas and along woodland borders and hedgerows.

All year with winged forms appearing in June and July.

Food includes small insects and aphid honeydew. There are rarely more than 1000 in a colony.

It is mainly found in southern and central England.

Appears to be localised in Leicestershire and Rutland.