Toxicity of insecticides to Dione juno juno (Lepidoptera: Heliconidae) and selectivity to two of its predaceous bugs.

摘要

Tolerances to fenthion, malathion, cartap and deltamethrin were determined in 2 predatory pentatomids, Podisus connexivus and Supputius cincticeps. Discriminating concn based on the LC99 of the insecticides to their prey, Dione juno juno, an important pest of passionflower in Brazil, were used. The insects were exposed to treated leaves and mortality was assessed after 24 h exposure. Both predator species showed high tolerance to deltamethrin. Fenthion was highly toxic to both species, while cartapand malathion showed intermediate toxicity.