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.
Protopolybia chartergoides
When a social wasp is in distress, it emits a pheromone that triggers nearby colony members into defensive mode, a greatly increased willingness and desire to sting. Wasps can sting repeatedly unlike their close relative, the bee. Stingers, which are actually modified egg-laying organs, are only found in females.