Darwin wasps (Hymenoptera: Ichneumonidae) are parasitoid wasps considered one of the largest families in the animal kingdom and natural enemies of a broad range of holometabolous insects and spiders ...

The Family Ichneumonidae includes vast numbers of parasites also, and is considered one of the largest families of insects. Bees. The most familiar bee, of course, is the Honeybee, a social insect ...

An important transition in insect life-history evolution was the shift from a solitary existence to living in groups comprising specialized castes. Caste-forming species produce some individuals ...