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.
Dolichovespula saxonica
"D. saxonica" is similar to its yellowjacket relatives with the black and yellow stripes on its body. However, the Saxon wasp is larger than most of its relatives and can also be identified by the three dots on its head. The Saxon queens are largest with a body length ranging from , while the males range from and the workers from . The male body consists of a copulatory casing at the end of their gaster and seven gastral tergites – hardened plates, or sclerites that are divided on the dorsal side of the body – and sternites, which are sclerites on the ventral side of the thorax. On the other hand, the female has six gastral tergites and sternites and a sting at the end of their gaster.