الفهرس 
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Abstract
This study aimed to survey and identify of the entomopathogenic fungi associated with cowpea aphid, A. craccivora, and assessment of the action of some of these fungi and/or their secondary metabolites on A. craccivora. These aims were scored through chemical studies which comprised chromatographic separation and structure elucidation of some compounds and biochemical studies which determined the biochemical effects of these entomogenous fungi on the transaminases and alkaline phosphatases of A. craccivora.
Five promising genera were recorded for the first time associated with A. craccivora in Egypt. These genera were: Trichoderma longibrachiatum, Panadora neoaphidis, Batkoa major, Entomophthora planchoniana, and Conidiobolus obscurus.
It’s worthly to mentioned that T. longibrachiatum was scored for the first time in all over the world associated with A. craccivora. In addition, Neozygite fresenii was recorded for the third time in Egypt and for the first time associated with A. craccivora in Dakahlia governorate.
T. longibrachiatum and/or its secondary metabolites showed high virulence for controlling A. craccivora followed by Cladosporium cladosporoides. Also, the biochemical study showed that both of the tested fungi and/ or their metabolite extracts revealed high observed decrease in transaminases and alkaline phosphatases activity of A. craccivora.