Small Black Ant - Lasius niger

Worker length: 3.4 - 5 mm, male length: 3.5 - 4.7 mm, queen length: 8 - 9 mm. Workers (non-reproductive females) are blackish-brown in colour and covered in small hairs. Winged reproductive females (queens) are almost twice as big as the workers, are darker in colour and have a large pair of clear wings, which are shed after mating. Males also possess wings and are much smaller than queens.