| Preface and Acknowledgments | |
| 1 | Kin Selection | 3 |
| 2 | Levels-of-selection Theory, Gene Selectionism, and Insect Societies | 39 |
| 3 | Kin Selection, Haplodiploidy, and the Evolution of Eusociality in Ants | 69 |
| 4 | Sex Ratio Theory for the Social Hymenoptera | 107 |
| 5 | Tests of Sex Ratio Theory in Ants | 156 |
| 6 | Kin Conflict over Sex Allocation | 200 |
| 7 | Kin Conflict over Reproduction | 220 |
| 8 | Evolution and Ecology of Multiple-queen Societies | 258 |
| 9 | Life History Theory in Ants | 299 |
| 10 | The Diversity of Life Histories in Ants | 328 |
| 11 | Mating Biology | 365 |
| 12 | The Division of Labor | 400 |
| References | 445 |
| Author Index | 511 |
| Subject Index | 519 |
| Taxonomic Index | 526 |
