Two harvester ants (Pogonomyrmex rugosus) from adjacent nests engaging in ritual warfare, pushing in a display of force but not actually harming each other.

• 相临蚁巢的两只黑色收获蚁正在进行礼节性的战斗。它们仅仅是在展示武力和宣布领土，但并不会真正伤害对方。