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Biocontrol introduction

Target pest: Coccus hesperidum (Hemiptera: Coccidae), soft brown scale

Agent introduced: Microterys nietneri (Hymenoptera: Encyrtidae) = Microterys flavus

Imported: 1921

Import source: Australia (may have already been in New Zealand)

Import notes: Introduced as M. flavus (Howard)

Released: 1921

Release details: Released at Nelson

Establishment: Established

Impacts on target: Common on Coccus hesperidum but its impact is unknown.


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.