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

Orectognathus versicolorOrectognathusdacetinimyrmicinaeformicidaehymenopteraantsanttrap jaw antstrapjaw antsmyrmicine trap jaw antstropical antsmandiblesworker antworker antssoldier antsmajor worker antsmajor workerspolymorphismcaste