B3   >>   BCANZ home   ·   Search database   ·   Browse database

Biocontrol introduction

Target pest: Costelytra zealandica (Coleoptera: Scarabaeidae), grass grub

Agent introduced: Thynnoides rufithorax (Hymenoptera: Tiphiidae) = T. gracilis and T. laeviceps (Smith)

Imported: 1947-51

Import source: Victoria, Australia

Release details: 1,416 released

Establishment: Two cocoons recovered from Odontria smithi Broun or O. striata White at Ashburton in 1949 and two more in 1950.

Impacts on target: Not considered to have established.


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.