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Biocontrol introduction

Target pest: aphids (Homoptera: Aphididae)

Agent introduced: Coccinella septempunctata (Coleoptera: Coccinellidae)

Import source: Pakistan, Austria

Released: Pakistan 1970-73, Austria 1975-76

Release details: Several thousand were released in Canterbury. In the late 1970's hibernating aggregations on machinery from Europe were detected but attempts to establish populations from these failed

Establishment: This species established temporarily but failed to form permanent populations.

References

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.