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.
Poecilopompilus interruptus
A highly variable spider wasp, which is 13 mm in length. "P. interruptus" has long orange antennae, bold rufous-brown and yellow bands on the mesosoma with yellow and brown markings on the thorax. Its legs are brown and yellow and the wasp's wings are brown. The amount of red, brown and yellow markings shows great individual variation. The antennae of males are straight or gently curved while females have antennae that curl at the ends. "Poecilopompilus" wasps may be a Müllerian mimics of various wasp species and this species appears to mimic paper wasps of the genus "Polistes". To distinguish this species from "P. algidus" the observer needs to examine the spines on the front tarsi of females and the inner margin of the eyes, "P. interruptus" females have four weak spines on the front tarsi in females and parallel inner eye margins while "P. algidus" has three strong spines and shows convergent inner eye margins.