Target pest: Phyllonorycter messaniella (Lepidoptera: Gracillariidae) = Lithocolletis messaniella, oak leaf-miner
Agent introduced: Apanteles circumscriptus (Hymenoptera: Braconidae) = Pholetesor circumscriptus
Import source: Italy
Release details: Parasitoids (806 females and 5 males) initially released into field cages in Nelson and 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 Apanteles circumscriptus in conjunction with Achrysocharoides splendens
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.