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.
Liostenogaster vechti
The main predators of these wasps are hornets (especially "Vespa tropica"), ichneumonid flies, and ants. The hornets attack and damage the nests by ripping the cells apart with their mandibles and then extracting portions of the brood. Raided nests can easily be identified by locating cells that have been ripped or torn. When a hornet or other flying predator approaches, the wasps engage in aerial attacks by throwing themselves into the air in the direction of the potential danger. They actually engage in this behavior very frequently and do so in response to any insect of similar size to hornets that approaches the nests in a questionable manner. When ants approach or invade the nests, the wasps will either grab the ants and drag them away from the nests, or, if the ants are especially large, the wasps will first assume a defensive posture, seize the ants, and then purposely fall out of the nests to ensure the ants are removed. Spiders may also prey on these wasps, but they are much more likely to catch solitary individuals away from the nest.