Parasitoid wasps within the family Ichneumonidae, which is one of the largest families of parasitoid wasps. Known for their parasitic behavior, where the female wasps lay their eggs on or inside the bodies of other insects. They generally have a slender, elongated body shape, Their antennae are typically long and slender, often as long or longer than the body, and they use these antennae for sensory purposes, such as detecting host chemicals or vibrations.