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The effect of the application of ethyl parathion, trichlorfon, diflubenzuron, and Bacillus thuringiensis var. kurstaki to eggs of Erinnyis ello, before and after being parasitized by Trichogramma exiguum and Telenomus sphingis, was studied. Insecticides were also tested on the adults of these par...


Urias López, Mario AlfonsoBellotti, Anthony C.Bravo Mojica, HiramCarrillo Sánchez, José Luis[Impacto de insecticidas sobre tres parasitoides de Erinnyis ello (L.) gusano de cuerno de la yuca]Impacto de insecticidas sobre tres parasitoides de Erinnyis ello (L.) gusano de cuerno de la yuca

Chemical exclusion of predators with permethrin was used to test the effectiveness of the phytoseiid predator Amblyseius limonicus Garman and McGregor and a complex of minor predators in the biological control of tetranychid (Mononychellus spp., Tetranychus spp., and Oligonychus peruvianus McGreg...


Braun, Ann R.Bellotti, Anthony C.Guerrero, JMWilson, LT[Effect of predator exclusion on cassava infested with tetranychid mites (Acari: Tetranychidae)]Effect of predator exclusion on cassava infested with tetranychid mites (Acari: Tetranychidae)

Oviposition by the cassava hornworm,Erinnyis ello L., was quantified for upper (abaxial) and lower (adaxial) leaf surfaces of cassava in the department of Tolima, Colombia. Relative rates of egg parasitism byTelenomus sphingis Ashmead on the different leaf surfaces were determined and compared. A...


Gold, CSAltieri, Miguel A.Bellotti, Anthony C.[Relative oviposition rates of the cassava hornworm, Erinnyis ello (Lep.: Sphingidae), and accompanying parasitism by Telenomus sphingis (Hym.: Scelionidae), on upper and lower leaf surfaces of cassava]Relative oviposition rates of the cassava hornworm, Erinnyis ello (Lep.: Sphingidae), and accompanying parasitism by Telenomus sphingis (Hym.: Scelionidae), on upper and lower leaf surfaces of cassava

The parasitism, development, and thermal requirements of Trichogramma exiguum and Telenomus sphingis, common parasitoids of Erinnyis ello eggs, were studied. Life statistics were also determined for each specie and temp. (20, 25, and 30 degrees C for both species; for T. sphingis 32.5 degrees C w...


Urias López, Mario AlfonsoBellotti, Anthony C.[Parasitismo y desarrollo de Trichogramma exiguum Pinto & Platner y Telenomus sphingis (Ashm) sobre Erinnyis ello (L.)]Parasitismo y desarrollo de Trichogramma exiguum Pinto & Platner y Telenomus sphingis (Ashm) sobre Erinnyis ello (L.)

A Phenaccocus herreni Cox & Williams population studied in Colombia, S.A., across a complete cassava crop cycle did not exceed 81 mealybugs/plant. P. herreni densities in Colombia were highest in the dry season, as were levels of parasitism by the encyrtids Acerophagus coccois Smith and Epidinoca...


Driesche, R.G. vanBellotti, Anthony C.Castillo, J.Herrera, C.J.[Estimating total losses from parasitoids for a field population of a continuously breeding insect, cassava mealybug, Phenacoccus herreni, (Homoptera: Pseudococcidae) in Colombia, S.A.]Estimating total losses from parasitoids for a field population of a continuously breeding insect, cassava mealybug, Phenacoccus herreni, (Homoptera: Pseudococcidae) in Colombia, S.A.

In order to determine the degree of parasitism of Erinnyis ello and E. alope eggs by Trichogramma and Telenomus under field conditions, 113 samples were collected, without determined dates, from Sept. 1978-March 1980, in Cruz das Almas, BA, Brazil, throughout the whole cassava cycle. Eggs were ta...


Farias, A.R.N.Bellotti, Anthony C.[Parasitismo de ovos de Erinnyis ello e Erinnyis alope em condicoes de campo]Parasitismo de ovos de Erinnyis ello e Erinnyis alope em condicoes de campo

Approx 20 insects and mites were found attacking cassava in several regions of Colombia at different growth stagcs and seasons. Thrips (Frankliniella williamsi), gall midges (Cecidomyiidae) and whiteflies (Bemisia sp. and Trialeurodes sp.) were present in greater than 50 percent of the plantation...


Díaz, R.O.Bellotti, Anthony C.Schoonhoven, Aart van[Insectos y acaros que atacan el cultivo de la yuca en Colombia]Insectos y acaros que atacan el cultivo de la yuca en Colombia

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