Patch-foraging
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Ibalia
Ibalia is a genus of parasitoid wasps in the family Ibaliidae, comprising approximately 13-14 described species. All species are specialized parasitoids of siricid woodwasps (family Siricidae), attacking the larval stages of their hosts within dead or decaying wood. Females locate host larvae by detecting volatile compounds emitted by symbiotic fungi that siricids cultivate for nutrition. The genus is notable for its laterally compressed abdomen, giving a distinctive flattened appearance, and for its role as a biological control agent against invasive woodwasps such as Sirex noctilio.
parasitoidwoodwasp-parasitoidbiological-controlforest-insectCynipoideaproovigenicolfactory-foragingcuticular-hydrocarbonesalkane-pheromonesSiricidae-parasitoidAmylostereumCerrenavolatileshost-finding-behaviorpatch-foragingcon-specific-interferenceflight-capacitylaterally-compressed-abdomenIbalia-ancepsIbalia-leucospoidesIbalia-drewseniIbalia-japonicaIbalia-rufipesIbalia-ruficollisIbalia leucospoides
knife-shaped ibalia, Sirex Ibaliid Wasp
Ibalia leucospoides is a solitary endoparasitoid wasp in the family Ibaliidae, native to the Northern Hemisphere and widely introduced to the Southern Hemisphere as a biological control agent for the invasive woodwasp Sirex noctilio. Adults are active from April to December depending on location, with a univoltine life cycle synchronized with host emergence. The species exhibits pro-ovigenic reproduction, with females emerging with a high proportion of mature eggs relative to lifetime fecundity. Adult feeding has minimal impact on egg maturation, survival, or flight capacity.