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Biocontrol introduction

Target pest: Saissetia oleae (Hemiptera: Coccidae), black scale

Agent introduced: Coccidoctonus dubius (Hymenoptera: Encyrtidae)

Imported: 1921

Import source: Australia and possibly California, USA

Released: 1921

Release details: Released at Nelson

Establishment: Established.

Impacts on target: Parasitoid of Moranila californica in S.oleae. M. californica was probably accidentally introduced.


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.