Target pest: Phthorimaea operculella (Lepidoptera: Gelechiidae), potato tuber moth
Agent introduced: Copidosoma koehleri (Hymenoptera: Encyrtidae)
Imported: 1949, 1964, 1966-67, 1968
Import source: 1949 North America via Australia, 1964 northern Argentina and southern Brazil via CIBC Station, Fontana, California, 1966-67 and 1968 via CIBC Bangalore, India
Released: 1949, 1966-67, 1968
Release details: 1949 Released at Nelson (numbers not known). It is not known if releases occurred in 1964. In 1966-67 169,000 were released at Lincoln, 12,000 at Nelson and 18,500 at Palmerston North. 1968 254,000 were released at Lincoln.
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.