Target pest: Graphognathus leucoloma (Coleoptera: Curculionidae), white fringed weevil
Agent introduced: Pseudelaphroptera brevipilosa (Hymenoptera: Tiphiidae)
Import source: Argentina
Release details: see also Costelytra zealandica. 1970 releases partly directed against G. leucoloma
Establishment: Cocoons recovered from G. leucoloma larvae
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.