The subfamily Cryptinae is the largest subfamily within the Ichneumonidae and might be encountered in the majority of terrestrial habitats. The nomenclature of this group is complex, e.g. it has been referred as the Phygadeuontinae and Gelinae (Townes, 1969). Almost all Cryptinae have been described as idiobiont ectoparasitoids. The most common hosts of Cryptinae are endopterygote pupae or prepupae enclosed in cocoons or plant tissue. However, there are some endoparasitic species in the Hedycryptina, Phygadeuontina, and Stilpnina. Conversely, a few are koinobionts. Furthermore, some species parasitize the egg sacs of Pseudoscorpionida and Araneae, and many can develop as secondary parasitoids. This subfamily includes 379 genera worldwide (Goulet & Huber, 1993). Although there is a large amount of information known about the host relationships of some Cryptinae, little is known on their biology. Furthermore, because the subfamily is rather large, it is structurally very diverse (Gauld & Hanson, 1995).