Target pest: Sirex noctilio (Hymenoptera: Siricidae), sirex wood wasp
Agent introduced: Megarhyssa emarginatoria (Hymenoptera: Ichneumonidae)
Cameron et al. (1989) - in 1965, three male and three female M. emarginatoria, collected in Europe, were sent to New Zealand from the UK. Oviposition was seen only once in the insectary and no progeny were obtained.
Cameron et al. (1989) - not released.
Cameron PJ, Hill RL, Bain J, Thomas WP (1989). A Review of Biological Control of Invertebrate Pests and Weeds in New Zealand 1874-1987. Technical Communication No 10. CAB International Institute of Biological Control. DSIR Entomology Division. 424p.