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Abstract A Yi—yoar study was conducted to identify and studj the fluctuations of oulioine mosquito larvae and their fredators. bperiments were boated at cultivated rural avea, Mankabad, Assiut Governorate (1975—1977) and semi— a.id cultivated area, Assiu.t (1976/77). I Resu.lts show that : - ) stibut ion and. f Oti8tjOr o4ne, rq I- CuAtivate, ru±ral eJ945l9: 1. Species oompositio. and distribution of culicine mosquitoes based on larval density may be arranged in the fo11aing descending order : - - 191.5, 0. ant, C. pijiens moles u, Q. uivitat is . )QngiariQ1ata and A. caØus. 976S o o,nflQtUs a Ytta1, . pipen P1QId* . cEsp, T. ngar&olai,a and C. thei1çri. 2. The main pea.ls of total culioine larvae were observed - in April, Juno aM October, 1975, and Ju.ne and November, 1976. The lowest populations were encountered dwing February, Au.gust and December, 1975, and February, Mazoh and September, 1976. 3. The main peaks of culicine pupol dnity wore observed in .pril, Juno and October, 1975, and in June and |