Wasp
Wasps first appeared in the fossil record in the Jurassic, and diversified into many surviving superfamilies by the Cretaceous. They are a successful and diverse group of insects with tens of thousands of described species; wasps have spread to all parts of the world except for the polar regions. The largest social wasp is the Asian giant hornet, at up to in length; among the largest solitary wasps is a group of species known as tarantula hawks, along with the giant scoliid of Indonesia ("Megascolia procer"). The smallest wasps are solitary chalcid wasps in the family Mymaridae, including the world's smallest known insect, with a body length of only , and the smallest known flying insect, only long.
Mischocyttarus mexicanus
"M. mexicanus" was described by Henri de Saussure in 1854, and it is a member of the social polistine wasp genus "Mischocyttarus". "Mischocyttarus" is actually cited as the largest genus of social wasps, and it consists entirely of New World wasp species. "M. mexicanus" includes at least two subspecies: "M. mexicanus cubicula" (Richards, 1978) and "M. mexicanus mexicanus" (de Saussure). "Mischocyttarus" biology is, reportedly, very similar to that of several wasps of the genus "Polistes".