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Biocontrol introduction

Target pest: aphids (Hemiptera: Aphididae)

Agent introduced: Hippodamia convergens (Coleoptera: Coccinellidae)

Imported: 1899 and 1921-1922

Import source: 1899-USA, 1921-1922 Sacramento, California, USA

Release details: Details of releases made in 1899 are unknown. 11,000 were released in 1921, distributed in lots of 50 to applicants in Nelson with smaller lots sent to Auckland, Hastings, New Plymouth, Blenheim, Christchurch and Dunedin.

Establishment: Not established

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.

Tillyard RJ (1923). History of the introduction of beneficial insects into New Zealand. Proceedings of the Pan-Pacific Science Congress, Australia, 383-390.