N. producta is one of about 9 described species and 11 undescribed species in its genus found in Australia. It is uniformly orange-brown in color like most members of the genus, and separation from its allies can only be reliably done by inspection of male genitalia with respect to a structure on the clasper.
The female envenomates the host caterpillar to paralyze it and lays an egg behind the head capsule. After the egg hatches, the larva feeds on its host as the host develops. The larva later emerges once the host becomes a prepupa, which kills the host. The larva then spins its own black-colored cocoon out of silk and pupates in the subterranean pupation chamber created by its host.
References
↑Gauld, I.D. (1984). An Introduction to the Ichneumonidae of Australia. London: British Museum (Natural History). p.413 pp. ISBN0-565-00895-1.
123Johns, Caitlin V.; Whitehouse, Mary E.A. (2004). "Mass rearing of two larval parasitoids of Helicoverpa spp. (Lepidoptera: Noctuidae): Netelia producta (Brullé) and Heteropelma scaposum (Morley) (Hymenoptera: Ichneumonidae) for field release". Australian Journal of Entomology. 43 (1): 83–87. doi:10.1111/j.1440-6055.2004.00402.x.
↑Walker, Paul W. (2011). "Biology and development of Chaetophthalmus dorsalis (Malloch) (Diptera: Tachinidae) parasitising Helicoverpa armigera (Hübner) and H. punctigera Wallengren (Lepidoptera: Noctuidae) larvae in the laboratory". Australian Journal of Entomology. 50 (3): 309–318. doi:10.1111/j.1440-6055.2011.00820.x.