The Ichneumonidae are a family within the order Hymenoptera. Insects in this family are commonly called ichneumon wasps. Less exact terms are ichneumon flies (they are not closely related to true flies), or scorpion wasps due to the extreme lengthening and curving of the abdomen (scorpions are arachnids). Simply but ambiguously, these insects are commonly called "ichneumons", which is also a term for the Egyptian mongoose (Herpestes ichneumon); ichneumonids is often encountered as a less ambiguous...