Villagran, M., Martín Mateo, M.P., Soria, F.J., & Ocete, M.E. 1999 Dinámica poblacional de Asterolecanium ilicicola (Targioni, 1892) (Homoptera: Asterolecaniidae) en la provincia de Huelva y desarrollo de un método de muestreo.. Zoológica baetica 10: 49-61

Notes: Title in English: Population dinamics of Asterolecanium ilicicola (Targioni, 1892) (Homoptera: Asterolecaniidae) in the province of Huelva and the development of a sampling method] We have studied the evolution of different phases in the development of Asterolecanium ilicicola (Targioni, 1892) (Homoptera: Asterolecaniidae) on holm oak (Quercus rotundifolia Lam.). It was found that, in the environmental conditions of Huelva, this is an univoltine species. The following populations indices were also determinated: density, intensity, proportion of infected leaves and Taylor's aggregation index. The results show a correlation between the proportion of leaves infected by fixed larvae and the total population. This fact allows us to find out population density through the binomial sampling of this instar and this simplify enumerative sampling of this species.