Los efectos de seis plaguicidas aplicados al cultivo de café sobre los huevos y etapas de desarrollo posteriores de Chrysoperla externa (Neuroptera: Chrysopidae), fueron evaluados bajo condiciones de laboratorio. Los plaguicidas y el agua (control) fueron aplicados en los huevos usando una torre de Potter. Después de la aplicación, cuarenta huevos por tratamiento fueron individualizados en tubos de vidrio y mantenidos en cámara bioclimática, con el objetivo de verificar las posibles anormalidades en el desarrollo de este depredador. Los tratamientos mostraron diferencias significativas para la viabilidad de los huevos y la supervivencia del primer instar larval. Chlorpyrifos, azufre y oxicloruro de cobre redujeron la viabilidad de los huevos tratados, mientras que el azufre y el betacyfluthrin redujeron la supervivencia del primer instar larval. Endosulfán y azociclotin redujo la oviposición diaria de esta especie crisopa. Los productos inocuos (Clase 1, E < 30%), pueden recomendarse para su uso en programas integrados de manejo de plagas en los cultivos de café, a fin de preservar este depredador.

The effects of six pesticides applied to the coffee crop on eggs and their consequences on the subsequent developmental stages of Chrysoperla externa (Neuroptera: Chrysopidae) were evaluated under laboratory conditions. The pesticides and water (control) were sprayed on eggs using a Potter's tower. After spraying, forty eggs per treatment were individualized in glass tubes and maintained in a climatic chamber, in order to evaluate immature development of this predator. The treatments showed significant differences for egg viability and survival of first-instar larvae. Chlorpyrifos, sulphur and copper oxichlorate reduced the treated egg viability, whereas both sulphur and betacyfluthrin reduced the survival of first-instar larvae. Endosulphan and azociclotin reduced the daily oviposition of this green lacewing species. The harmless products (Class 1, E < 30%), can be recommended for use in integrated pest management programs in coffee crops, in order to preserve this predator.

Avaliou-se a ação de produtos fitossanitários usados em cafeeiros sobre pupas e adultos de Chrysoperla externa (Hagen, 1861) (Neuroptera: Chrysopidae). Os bioensaios foram conduzidos no Departamento de Entomologia da Universidade Federal de Lavras - UFLA, Lavras, MG, Brasil. Os tratamentos avaliados, em g i.a.L-1 de água, foram: 1- endosulfan (Thiodan 350 CE - 1,75), 2- chlorpyrifos (Lorsban 480 CE -1,2), 3- betacyfluthrin (Turbo 50 CE - 0,013), 4- enxofre (Kumulus 800 PM - 4,0), 5- azocyclotin (Peropal 250 PM - 0,31), 6- oxicloreto de cobre (Cuprogarb 500 PM - 5,0) e 7- Testemunha (água). As pulverizações foram realizadas diretamente sobre pupas e adultos do crisopídeo por meio de torre de Potter. As pupas foram colocadas em tubos de vidro e os adultos em gaiolas de PVC, e mantidos em sala climatizada a 25 ± 2°C, UR de 70 ± 10% e fotofase de 12 horas. O delineamento experimental foi inteiramente casualizado, com sete tratamentos e dez repetições, sendo cada parcela formada por quatro pupas ou um casal de C. externa. Os produtos foram distribuídos nas quatro classes de toxicidade conforme escala estabelecida pela IOBC. O chlorpyrifos mostrou-se levemente nocivo para pupas (classe 2, 30£E£79%), e os demais produtos foram inócuos (classe 1, E<30%). O endosulfan, enxofre, azocyclotin e oxicloreto de cobre foram inócuos em adultos, enquanto o betacyfluthrin foi moderadamente nocivo (classe 3, 80£E£99%) e o chlorpyrifos foi nocivo (classe 4, E>99%). Os produtos testados à base de endosulfan, enxofre, azocyclotin e oxicloreto de cobre podem ser recomendados em programas de manejo de pragas do cafeeiro em associação com C. externa, em função da baixa toxidade apresentada por esses compostos ao predador.

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.