The efficiency of a binomial sampling (presence-absence) technique for Selenaspidus articulatus (Morg.) in citrus orchards was evaluated. The spatial distribution of scales was aggregated, according to Taylor's law power coefficients (b = 1,636; a = 5,772). Regression analysis between the estimated proportion of infected leaves, resulted in a high determination coefficient, explaining 85,4% of the model. The number of sample unities (leaves) required to estimate infestation density was low, allowing practical application of this metodology to monitor S. articulatus populations.
Insecta; binomial sampling; insect pest management
