Population densities of the green stink bug, Plautia af®nis, on canes of raspberry, Rubus idaeus, were examined at Caboolture, south-eastern Queensland, Australia, during 1994±1995. The presence of natural enemies of P. af®nis was also monitored. When feeding directly on developing and mature fruit, both adult and nymphal P. af®nis cause damage. Numbers SE of P. af®nis peaked at 1.4 0.3 adults and 5.6 0.7 nymphs per metre of row during late December 1994 to early January 1995. The parasitoids Trissolcus basalis (17.6%), Trissolcus oenone (< 2%) and Telenomus sp. (22.6%) (Scelionidae) and the hyperparasitoid Acroclisoides sp. (Pteromalidae) emerged from eggs. The braconid Aridelus sp. (Euphorinae), and an undetermined genus of Tachinidae were recovered from late-instar nymphs and adults in which parasitisation averaged 0.8 and 1.4%, respectively. Lateinstar nymphs and adults of P. af®nis were attacked by the predatory pentatomid Amyotea hamatus, the reduviid Pristhesancus plagipennis and Thomisidae spiders. In laboratory studies, female P. af®nis had a mean ( SE) longevity of 74.2 4.3 days, mean fecundity of 423.0 30.3 eggs per female, and a mean pre-oviposition period of 7.9 0.5 days; males lived on average 44.8 6.4 days. Other plantfeeding bugs associated with raspberry were Nezara viridula, Cuspicona simplex, Piezodorous hybneri (Pentatomidae) and Amblypelta nitida (Coreidae).