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 (păr′ə-sĭ-toid′, -sī′toid)
An organism, usually an insect, that lives on or in a host organism during some period of its development and eventually kills its host.

par′a·sit·oid′ adj.


(Zoology) zoology an animal, esp an insect, that is parasitic during the larval stage of its life cycle but becomes free-living when adult


(ˈpær ə sɪˌtɔɪd, -saɪ-)

1. an insect that hatches within a host, feeds on it during the larval stage, and becomes free-living when the host dies.
2. any organism whose mode of life is intermediate between a parasite and a predator.
3. of or pertaining to a parasitoid.
[1920–25; < New Latin Parasitoïdea (1913); see parasite, -oid]
par′a•sit•oid•ism, n.
References in periodicals archive ?
If it weren't for parasitoids and other natural enemies, we would be knee-deep in pest insects," said Werren.
In New Zealand, light brown apple moth is controlled by parasitoids and selective insecticides [Graphic omitted]
36], Eulophidae, Eurytomidae, Ormyridae, Torymida e [31], Eupelmidae[13,19] and some species of Ichneumonidae [30,53] are important parasitoids of gall wasps.
The maps use a combination of soil and air temperatures to delineate the current distribution of both Diaprepes root weevils and helpful egg-attacking parasitoids.
The order of tiny insects called Strepsiptera can live only as parasitoids inside the bodies of other insects, says Jeyaraney Kathirithamby of the University of Oxford in England.
Natural enemies, especially Trichogramma species (Hymenoptera: Trichogrammatidae) egg parasitoids, represent an alternative to control Spodoptera (Spinola-Filho et al.
It will evaluate competing hypotheses explaining latitudinal trends in insect herbivore diversity by the variation in either phylogenetic or functional diversity of plants, the host specificity of herbivores, or the diversity and specificity of their parasitoids and predators.
The parasitoids of FAW in the families Ichneumonidae, Braconidae, Eulophidae (order Hymenoptera) and Tachinidae (order Diptera) have been inventoried in the Mexican states Coahuila, Michoacan, Jalisco, Sinaloa, Nayarit, Veracruz, Colima, Yucatan, among others (MolinaOchoa et al.
Harvey's research focuses on life history strategies in parasitoids and hyperparasitoids, plantherbivore-parasitoid interactions and community ecology; science and advocacy.
Herbivore-damaged plants release many types of volatile organic compounds (VOCs), which guide parasitoids (beneficial parasitic wasps) to their herbivore hosts.