Survey as well as population density of mite's fauna inhabiting organic manures in different animal sheds i.e. buffalo, cow, sheep and goats was conducted during the period from March 2013 to February 2015 in the Experimental Farm, Faculty of Agriculture, Suez Canal University. Results indicated that thirty-three species belonging to twentyeight genera and twenty-one families within 2 orders were recorded and identified. Order Acariformes was represented by suborder Actinedida (6 families and 12 species); suborder Acaridida (3 families and 3 species) and suborder Oribatida (2 families and 2 species). Order Parasitiformes was represented only by suborder Gamasida (10 families and 16 species). Furthemore, six families (9 species) were recorded in buffalo sheds; 13 families (18 species) in cow sheds; 20 families (27 species) in sheep sheds and 8 families (9 species) in goat sheds. Data also revealed that Tyrophagus putrescentiae Schrank was recorded in highest numbers, while Macrocheleus merdarus (Berlese) was relatively rare.

Euseius scutalis developed and oviposited when provided with egg stage of Parlatoria ziziphi as prey under laboratory conditions of 28 ± 2°C and 70 ± 5% relative humidity (RH). Euseius scutalis was significantly affected by food source but a slight difference was noticed between females and males. The efficiency of the predator increased as it advanced in its development. Egg incubation period of female and male lasted 2.11 days. The life cycle lasted 8.04 and 7.32 days for female and male, respectively. The female lived for a longer period than that of the male, where longevity was 23.3 and 17.11 days for female and male, respectively. The number of prey eggs consumed per individuals was 16.11 and 10.30 eggs for total immature stages. The female predator devoured 43.81 prey eggs during the oviposition period (11.46 days) and deposited 0.91 eggs per day.