Target pest: Edwardsiana crataegi (Homoptera: Cicadellidae), Froggat's apple leaf hopper
Agent introduced: Aphelopus typhlocybae (Hymenoptera: Dryinidae)
Imported: 1935, 1935
Import source: New York, USA
Release details: In 1936 70 adults were released at Cawthorn Institute and 169 between Appleby and Mapua, Nelson. 16 were released at Cawthorn Institute, Nelson in 1937.
Establishment: Not recovered.
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.