Target pest: Listroderes difficilis (Coleoptera: Curculionidae), vegetable weevil
Agent introduced: Stethantyx parkeri (Hymenoptera: Ichneumonidae)
Imported: 1960, 1961
Import source: Argentina and Uruguay via Australia
Release details: Approximately 150 adults or cocoons released at Palmerston North, adults released in Dodsons Valley near Nelson and some in DSIR grounds at Nelson
Establishment: Not recovered
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.