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Biocontrol introduction

Target pest: Agrotis ipsilon (Lepidoptera: Noctuidae), greasy cutworm

Agent introduced: Apanteles ruficrus (Hymenoptera: Braconidae) = Cotesia ruficrus (Haliday)

Imported: 1970-71

Import source: Pakistan

Released: 1970-71

Release details: Approximately 4,000 mass-parasitised larvae and 40,000 adults were released from Huntly north in the North Island and near Nelson in the South Island.

Establishment: Established 1970

Impacts on target: Consistently parasitises 5-10% of A. ipsilon in early summer.

Impacts on non-targets: Also parasitises Mythimna separata and Chrysodeixis eriosoma.

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.