Infestation of Dysaethria quadricaudata caterpillars (Lepidoptera: Uraniidae: Epipleminae) and its control measure, with reference to evaluation on different insecticide effectiveness

Seedlings of three Rubiaceae species, namely Neolamarckia cadamba, Nauclea subdita and Mitragyna speciosa were attacked by Dysaethria quadricaudata Walker (Lepidoptera: Uraniidae: Epipleminae) caterpillars at the nursery of the Forest Research Centre (FRC), Sepilok. The latter two species are new host plant records for this caterpi llar. Life cycle and behaviour of the pest were monitored. In view of its voracious and gregarious feeding habit and high abundance, this species is potentially a threat to Rubiaceae tree plantations. An experiment was conducted to evaluate the effectiveness and suitability of insecticides in controlling this leaf-feeding insect. Results show that cypermethrin was recommended, based on its comparative hazard level, cost and effectiveness.