Target pest: Mayetiola destructor (Diptera: Cecidomyiidae), hessian fly
Agent introduced: Pediobius epigonus (Hymenoptera: Eulophidae)
Imported: 1894, possibly also 1894/5
Import source: England
Release details: Released near Masterton and possibly Marton in the North Island and Milburn and probably Milton (both Otago) in the South Island.
Establishment: South Island but not recorded in the North Island
Impacts on target: Not quantified
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.