It was evaluated the action of the pesticides endosulfan, chlorpyrifos, betacyfluthrin, sulphur, azocyclotin and copper oxychloride to pupae and adults of Chrysoperla externa (Hagen)(Neuroptera: Chrysopidae). The bioassays were carried out in the Entomology Department of the Universidade Federal de Lavras - UFLA, MG, Brazil. The treatments in g i.a.L-1 of water, were: 1 - endosulfan (Thiodan 350 CE - 1.75), 2 - chlorpyrifos (Lorsban 480 CE - 1.2), 3 - betacyfluthrin (Turbo 50 CE - 0.013), 4 - sulphur (Kumulus 800 PM - 4.0), 5 - azocyclotin (Peropal 250 PM - 0.31), 6 - copper oxychloride (Cuprogarb 500 PM - 5.0) and 7 - control (water). The sprayings were accomplished directly on pupae and adults of green lacewing, using a Potter's tower. The pupae were placed in glass tubes and the adults in PVC cages and maintained in climatic chambers at 25 ± 2°C, RH of 70 ± 10% and 12-hour photophase. The experimental design was completely randomized, with seven treatments and ten replicates. Each plot was made up by either four pupae or one couple of C. externa. The pesticides were classified according recommendations of the IOBC. Chlorpyrifos was classified in the class 2 = slightly harmful (30£E£79%) for pupae, and the all the other products were selective and classified in the class 1 = harmless (E<30%). To adults, chlorpyrifos was toxic, being classified in class 4 = harmful (E>99%) and betacyfluthrin in class 3 = moderately harmful (80£E£99%). Endosulfan, sulphur, azocyclotin and copper oxychloride were harmless to adults, being classified in class 1. The pesticides endosulfan, azocyclotin, sulphur and copper oxychloride can be recommended in coffee pest management programs in association with C. externa, based in the reduced toxicity presented in these products for this predator.
Coffea arabica; green lacewing; insect pest management; selectivity
