Tobacco-budworm
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Toxoneuron
Toxoneuron is a genus of koinobiont endoparasitoid wasps in the family Braconidae. The best-studied species, Toxoneuron nigriceps, is a specialist parasitoid of the tobacco budworm (Heliothis virescens). Members of this genus develop internally within host larvae, with a distinctive post-egression feeding phase where larvae feed externally on host tissues before pupation. The genus exhibits sophisticated host manipulation mechanisms including polydnavirus-mediated immune suppression and teratocyte-derived physiological regulation.
Toxoneuron nigriceps
Toxoneuron nigriceps is a koinobiont endoparasitoid wasp in the family Braconidae. It is highly host-specific to the tobacco budworm, Heliothis virescens, and historically provided substantial natural biological control in agricultural systems. The species exhibits complex host manipulation strategies including injection of polydnavirus, venom, and ovarian proteins during oviposition, followed by a distinctive postegression feeding phase where larvae exit the host to feed externally on liquefied tissues before pupation.