Japanese giant hornet wasps (including the Japanese hornet). While the sting of the Asian giant hornet is officially rated as only a 2 on the Schmidt Sting Pain Index, other less official reports have the sting of the Japanese sub species to be rivaling or even exceeding other Hymenopterans such as the Tarantula hawk and even the Bullet Ant, both of which are ranked as a 4 on the respective index. Japanese giant hornet The Japanese giant hornet ("Vespa mandarinia japonica") is a subspecies of the world's largest hornet, the Asian giant hornet ("V. mandarinia"). It is a large insect, with adults frequently
Bald-faced hornet acts as a selective pressure on the workers, so they are more likely to exercise reproductive restraint. It has been suggested that workers in reproductive nests may kill their queen so they can reproduce. When researchers at the University of Sheffield examined a collection of nineteen "D. maculata" nests during the reproductive phase of their life cycle, they found that 14/19 nests did not have a queen. Matricide might occur after sufficient workers have been raised and queen-destined eggs have been laid. However, matricide has not been directly observed and other causes of death are possible. Diet in "D. maculata"