Target pest: Phyllonorycter messaniella (Lepidoptera: Gracillariidae) = Lithocolletis messaniella, oak leaf-miner
Agent introduced: Achrysocharoides splendens (Hymenoptera: Eulophidae)
Import source: Europe
Release details: 352 parasitoids were initially released into field cages in Nelson, then moved to Stoke, and were subsequently redistributed widely.
Establishment: Established quickly and is widespread
Impacts on target: Considered a successful example of classical biological control. Damage by Phyllonorycter messaniella has been greatly reduced by Achrysocharoides splendens in conjunction with Apanteles circumscriptus
Cameron PJ, Hill RL, Bain J and 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.