File:Johnson, C., Agosti, D. et al. 2001. Acropyga and Azteca ants with scale insects.pdf

Summary
Johnson, C., Agosti, D., Delabie, J.H., Dumpert, K., Williams, O.J., von Tschimhaus, M., Maschwitz, U. 2001. Acropyga and Azteca ants with scale insects: 20 million years of intimate symbiosis. American Museum Novitates 3335:1-18.