I have added a downloadable pdf file which contains a key to identifying species of British Ant, which is adapted from Dr M.V. Brian’s 1977 book, Ants.
You will need a magnifying glass and/or microscope to take full advantage of it. It might be a bit “over technical” for the novice, but I thought I would offer it up anyway. I have found it to be vary useful myself at times.
The download link can be found at the bottom of the Species of Ant page (contained in the Ant Information drop down menu accessed via the menu of this site). Or click on the following link to be taken there: https://www.antnest.co.uk/species-of-ant/