1. Chapter 2 Opener These sterile worker weaver ants labor together to make leaf nests for the reproductive benefit of other ants

2. Figure 2.1 A group of worker termites escorted by a single large soldier back to their colony

3. Figure 2.2 A huge number of tiny sterile termites built this immense home for their colony in Western Australia

4. Figure 2.3 Sacrifices by social insect workers

5. Figure 2.3 Sacrifices by social insect workers (Part 1)

6. Figure 2.3 Sacrifices by social insect workers (Part 2)

7. Figure 2.4 The territories of an Australian songbird

8. Figure 2.4 The territories of an Australian songbird (Part 1)

9. Figure 2.4 The territories of an Australian songbird (Part 2)

10. Figure 2.5 Gary Larson’s cartoon of presumably suicidal lemmings headed into the ocean

11. Figure 2.6 How to achieve indirect fitness

12. Figure 2.7 A foundress female wasp

13. Figure 2.8 A colony of Dictyostelium discoideum

14. Figure 2.9 Haplodiploidy and the evolution of eusociality in the Hymenoptera

15. Figure 2.9 Haplodiploidy and the evolution of eusociality in the Hymenoptera (Part 1)

16. Figure 2.9 Haplodiploidy and the evolution of eusociality in the Hymenoptera (Part 2)

17. Figure 2.9 Haplodiploidy and the evolution of eusociality in the Hymenoptera (Part 3)

18. Figure 2.9 Haplodiploidy and the evolution of eusociality in the Hymenoptera (Part 4)

19. Figure 2.10 Monogamy and the origin of eusociality by kin selection in the Hymenoptera

20. Box 2.3 How are phylogenetic trees constructed and what do they mean?

21. Box 2. 3 How are phylogenetic trees constructed and what do they mean
Box 2.3 How are phylogenetic trees constructed and what do they mean? (Part 1)

22. Box 2. 3 How are phylogenetic trees constructed and what do they mean
Box 2.3 How are phylogenetic trees constructed and what do they mean? (Part 2)

23. Figure 2.11 Round dance of honey bees

24. Figure 2.12 Waggle dance of honey bees

25. Figure 2.12 Waggle dance of honey bees (Part 1)

26. Figure 2.12 Waggle dance of honey bees (Part 2)

27. Figure 2.13 Testing directional and distance communication by honey bees

28. Figure 2.13 Testing directional and distance communication by honey bees (Part 1)

29. Figure 2.13 Testing directional and distance communication by honey bees (Part 2)

30. Figure 2.14 The nest of an Asian honey bee, Apis florea, is built out in the open around a branch

31. Figure 2.15 Communication by scent marking in a stingless bee

32. Figure 2.16 Evolutionary history of the honey bee dance communication system

33. Figure 2.16 Evolutionary history of the honey bee dance communication system (Part 1)

34. Figure 2.16 Evolutionary history of the honey bee dance communication system (Part 2)

35. Figure 2.17 Workers and the queen monitor the reproductive behavior of others

36. Figure 2.18 Conflict within ant colonies in which workers that are about to reproduce

37. Figure 2.18 Conflict within ant colonies in which workers that are about to reproduce (Part 1)

38. Figure 2.18 Conflict within ant colonies in which workers that are about to reproduce (Part 2)

39. Figure 2.19 A test of the effectiveness of policing

40. Figure The proportion of males produced by workers varies among ants, social bees, and social wasps

41. Figure 2.21 Colony kin structure is linked to queen production in eusocial Melipona bees

42. Figure 2.21 Colony kin structure is linked to queen production in eusocial Melipona bees (Part 1)

43. Figure 2.21 Colony kin structure is linked to queen production in eusocial Melipona bees (Part 2)