Linepithema humile (formerly Iridomyrmex humilis) better known as The Argentine Ant originates from South America. It has been spread by humans to many parts of the world and has become established in areas that have a warm climate. It has only rarely been found in Britain and then usually in hothouses or buildings. It is an invasive species which forms large or very large colonies of cooperating, interconnected nests with many queens.
Very localised usually in hot-houses or other heated buildings. A large colony, living at least partly outdoors, is known from Fulham in West London.
A world-wide tramp species found in most places with a warm climate. Such as southern Europe.