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The present work was conducted to survey and study the seasonal abundance of different leafhopper and planthopper insects infesting some leguminous plants (broad bean ,pea ,cowpea and bean plants)as well as their varieties in Diarb–Nigm district, Sharkia Governorate ,Egypt during 2014/15 and 2015/16 seasons. The collected insect pests by using sweep net from leguminous plants were the leafhopper and planthopper insects specially, Empoasca decipiens (Paoli), Empoasca decedens (Paoli) , Cicadulina chinai (Ghaui), , Balclutha hortensis,(Lindb.),Nephotettix apicalis (Matsch) and planthoppers, Sogatelle vibix (Haupt) and S. furcifera (Horv.) . High population abundance for E. decipiens occurred on broad bean and pea plants during the fourth week of Febrauary.While in case of cowpea and bean plants two peaks of abundance were recorded at the second week of July and the second week of August, respectively. On the other hand, E.decedens had one peak of abundance at the second week of March for broad bean and pea plants. On cowpea and bean plants two peaks were also recorded at the second week of July and the second week of August, during the two successive seasons, respectively.Varieties such as broad bean, pea, cowpea and bean plants influenced the population density of leafhoppers, Cream7 cowpea, Bronco bean, Master B pea and Improved Giza 3 broad bean varieties showed lowest mean number of insects/sample. Chemical analysis results showed a positive relationship between protein & carbohydrate contents and the average number of the leafhopper insects on all tested leguminous plant varieties ,while a reverse relationship between pH values &leafhopper insect and also with quantity of yield was also shown.

Influence of Some Leguminous Vegetable Plant Varieties As Host Plants on The Seasonal Abundance of The Leafhopper and Planthopper Insects.