Target pest: Hylastes ater (Coleoptera: Anthribidae), black pine bark beetle
Agent introduced: Rhizophagus ferrugineus (Coleoptera: Monotomidae)
Imported: 1935 plus a later importation pre 1936
Import source: Europe
Release details: 30 were released at Moutere Hills and 50 at Foxton in 1933. there are no records of later releases
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.