REFERENCES
- Dumpert , K. 1981 . The Social Biology of Ants. Pitman Publishing Limited, London
- Hölldobler , B. and Wilson , E. O. 1977 . The number of queens: an important trait in ant evolution . Naturwissenschaften , 64 : 8 – 15 .
- Wilson , E. O. 1971 . The Insect Societies Cambridge , Mass. : Harvard University Press .