Wasp
The largest social wasp is the Asian giant hornet, at up to in length. The various tarantula hawk wasps are of a similar size and can overpower a spider many times its own weight, and move it to its burrow, with a sting that is excruciatingly painful to humans. The solitary giant scoliid, "Megascolia procer", with a wingspan of 11.5 cm, has subspecies in Sumatra and Java; it is a parasitoid of the Atlas beetle "Chalcosoma atlas". The female giant ichneumon wasp "Megarhyssa macrurus" is long including its very long but slender ovipositor which is used for boring into wood and inserting eggs. The smallest wasps are solitary chalcid wasps in the family Mymaridae, including the world's smallest known insect, "Dicopomorpha echmepterygis" (139 micrometres long) and "Kikiki huna" with a body length of only 158 micrometres, the smallest known flying insect.
Mischocyttarus drewseni
"M. drewseni" is a member of the family Vespidae, which is broken down into four subfamilies: paper wasps (subfamily Polistinae), pollen wasps (subfamily Masarinae), potter and mason wasps (subfamily Eumeninae), and yellow jackets (subfamily Vespinae). Within the Vespidae, "M. drewseni" belongs to the subfamily Polistinae which is typically found in tropical regions and comprises 25 genera. Within the Polistinae is the tribe Epiponini containing many genera, all of which, including "M. drewseni", are found in the New World. The asymmetrical tarsal lobes of the genus "Mischocyttarus" separates it from other Epiponini. "Mischocyttarus" larvae also have distinct first thoracic spiracles. "Mischocyttarus" is the largest genus of social wasps, containing 186 species.