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Biocontrol introduction

Target pest: Forficula auricularia (Dermaptera: Forficulidae), European earwig

Agent introduced: Triarthria setipennis (Diptera: Tachinidae)

Imported: 1923-29

Import source: England

Released: 1923, 1929, 1933

Release details: 1923 made at Roxburgh and Clyde in Central Otago, 1929 7 individuals released in Central Otago and 4 males and 10 females in Nelson. 1933 release cannot be verified.

Establishment: Did not establish


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.