Adult female of Tetranyehus urticae (Koch) response to variable conditions of light and topography (reported in a previous publication by the authors), were compared with searching panerns developed by Neoseiulus anonymus (Chant & Baker) under the same experimental conditions, By determined and multiplied by the perception earnp, establishing the total searching area of the predator. In a second part, the predator's functional response was examined at various densities on T. urticee eggs (1,2,4,7,10,13,19 y 30 eggs per leaf disk, each with a diameter of two centimeters), offered as prev, This work determines the searching and preying potentiality of N. anonymus and compares them with Amblyseius herbieolus (Chant) and Neoseiulus ehilenensis (Dosse) determined and reported in a previous work.