Pharaoh ants (Monomorium Pharaonis)
The queens are larger in length than the workers and males. They have a large head with slightly bent antennae and black eyes. The males will have wings which are a pale yellow, and for this reason can be difficult to see. However, queens are larger and darker in colour.
Size: Queen: 3.6mm
Males and workers: 2-3mm
Colour: Transparent yellow/orange in colour
Breeding pattern: The queen can typically lay eggs in batches of 10 to 12 at a time, but can produce up to 3500 eggs in a lifetime. The eggs that are produced take up to 42 days to mature from egg to adult. Each queen within the nest lives between 90-365 days.
The pharaoh ant is a tropical species of ant, apparently only found in heated buildings in the UK. However, we have found these ants outside of heated buildings on housing estates and in and around hospitals, which demonstrates how intelligent these insects are. In the event of a threat, workers ants can quickly move pupae and young larvae away from the original colony. This response to danger can be triggered if, for example, you use an insecticide to spray the trails or nests of ants which causes them to bud and create satellite nests. Budding is a known process by which the ants gradually spread throughout buildings or complexes as the colonies get bigger.