Beewolf
Beewolves (genus Philanthus), also known as bee-hunters or bee-killer wasps, are solitary, predatory wasps, most of which prey on bees, hence their common name. The adult females dig tunnels in the ground for nesting, while the territorial males mark twigs and other objects with pheromones to claim the territory from competing males.
Vespula vulgaris
Research indicates the wasps use odor to identify and attack rival wasps from other colonies, and nest odor frequently changes. "V. vulgaris" wasps have been observed aggressively competing with honey bees for the honeydew secreted by the scale insect "Ultracoelostoma brittini" in New Zealand's South Island black beech forests.