Tetramorium bicarinatum

Tetramorium bicarinatum is one of the most successful, abundant, and widespread tramp species within the genus Tetramorium. It occurs in almost all tropical and subtropical habitats around the world, except for most of the Afrotropical, and also has been transferred to temperate countries where it can survive in constantly heated buildings (botanical gardens, zoos, etc.).

The species is known to occur in most of the Oriental and Indo-Australian regions, including almost all Pacific island systems, the New World, Europe, the Malagasy region, and on several islands in the Atlantic and Indian Oceans (Hita Garcia and Fisher 2011).

It is found in grassland and areas of bare coastal soil in Japan, where it prefers more open and dryer situations than Tetramorium nipponense. Nests are found under stones and logs.

These ants can imbreed meaning when you have multiple queens they will mate with eachother. 

Source: Antwiki