Carebara marauder ants have one of the largest size disparities between the largest and smallest worker ants in a colony. Here a supermajor uses her massive jaws to cut through tree bark while minor workers stand by. The ants have discovered beetle larvae- a favored prey item- underneath the bark. Rossville, Queensland, Australia
Supermajor and minor workers. Rossville, Queensland, Australia
Orectognathus versicolor is unusual for a trap-jaw ant in having a major worker caste (the large ant at center). The function of majors in this species remains unknown; other Orectognathus lack majors. Brisbane, Queensland, Australia
