Early studies of the Mediterranean flour moth, Ephestia kuhniella, parasitized by the ichnemonid, Venturia canescens, showed that eggs of this species are coated with particles that resemble virions [2] [3] [4] and contain surface proteins that mimic host proteins, thus keeping the eggs and larvae from being recognized as foreign material by their host. These particles lack DNA, and thus are not considered virions [5] . With respect to both species number and mechanisms that lead to successful parasitism, endoparasitic wasps are known to inject secretions at oviposition, but only a few lineages use viruses or virus-like particles (VLPs) to evade or to suppress host defences. In the family Ichneumonidae, for example, four types of host defence suppression mediated by the injection of fluids or suspensions are known that lead to successful parasitism. 1) Fluid injected with eggs bypasses host defences without the aid of viruses or VLPs [6] .