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Biocontrol introduction

Target pest: aphids (Hemiptera: Aphididae)

Agent introduced: Harmonia conformis (Coleoptera: Coccinellidae)

Imported: 1896, 1898, 1964 and 1976

Import source: 1896, 1898 and 1964-Australia, 1977 Tasmania, Australia.

Released: 1896,1898, 1964, 1977

Release details: Sites of early releases are unknown, 200 were released in Canterbury in 1964 and in 1977, 200+ were released in Canterbury and hundreds in Auckland.

Establishment: Relatively common in Auckland Province but distribution appears limited by climate. Did not establish in Canterbury and despite early reports stating it was widespread it does not appear to have established outside of Auckland.

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.