This group of insects contains many subgroups of wasps, and and also bees and ants, which evolved from wasp ancestors.
There are many different sizes in this group. Some parasitic wasps are so small they can develop into adults inside the eggs of other insects. Others are large and strong predators, over 3 cm long. All have chewing mouthparts, and the adults have a thin connection between their last two body sections (the abdomen and the thorax). All have 4 clear wings as adults, with the front pair larger than the back pair (queen and male ants have wings too, but only for a short time. Bees and wasps have straight antennae, ants often have a permanent bend in theirs.
Parasitic wasps often have a very large needle-like structure at the end of their abdomen. This isn't a stinger, its an ovipositor. They use it to inject their eggs inside a host insect, and some drill through bark, wood, or plant stems to get to their victims. These wasps mostly cannot sting, and they do not have the black and bright yellow colors that you may already know about.
Other wasps are predators, biting and stinging other insects and spiders. The wasps eat them, or carry their prey to their to feed their young. Wasps that sting are usually brightly colored with black and yellow stripes, sometimes red. This is a warning to potential predators that they can sting.
Other Physical Features: ectothermic ; bilateral symmetry
Sexual Dimorphism: female larger; sexes shaped differently
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