Target pest: Paropsis charybdis (Coleoptera: Chrysomelidae), eucalyptus tortoise beetle
Agent introduced: Paropsiva spp. (Diptera: Tachinidae)
1934?, 1935?, 1973-74, 1974-75
Cameron et al. (1989) - in February 1934 a small number of late instar larvae of various Paropsis species were imported from, Australia, which yielded â€˜a quantity of tachinid pupariaâ€™. In March 1934, 24 tachinid puparia were received from Australia, and another 29 in January 1935. Apparently two distinct species were present in all three consignments. A number of tachinids were reared but there were no field releases. During the summer of 1973-74, 5,435 tachinid puparia were imported; 58% yielded insects of which just over half were tachinids (the rest being hyperparasitoids), mostly Froggattimyia tillyardi with a few Paropsivora sp. About 8,000 P. Charybdis larvae were exposed to the tachinids but only three F1 flies resulted. No releases were made. In the 1974-75 season 10,632 tachinid pupae were received from Australia; 70% yielded insects of which two-thirds were tachinids (the rest being hyperparasitoids), nearly all Froggattimyia tillyardi plus a few Paropsivora sp. Over 10,000 Paropsis larvae were exposed to the tachinids but only 49 F1 flies resulted.
Cameron et al. (1989) - not released.
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.