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Biocontrol introduction

Target pest: aphids (Hemiptera: Aphididae)

Agent introduced: Harmonia dimidiata (Coleoptera: Coccinellidae)

Imported: 1974

Import source: Swat, Pakistan

Released: 1974-76

Release details: At Lincoln, Canterbury, adults and several thousand eggs were released in 1974. In 1975 and 1976 releases were made at Keri Keri, Auckland, Tauranga, Palmerston North, Woodhill, Nelson and Canterbury

Establishment: Overwintering aggregations were found at Lincoln in 1975 and 1976 but establishment failed.


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.