Biocontrol introduction

Target pest: Graphognathus leucoloma (Coleoptera: Curculionidae), white fringed weevil

Agent introduced: Pseudelaphroptera brevipilosa (Hymenoptera: Tiphiidae)

Imported: 1965-1973

Import source: Argentina

Released: 1970

Release details: see also Costelytra zealandica. 1970 releases partly directed against G. leucoloma

Establishment: Cocoons recovered from G. leucoloma larvae

References

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.