List of Articles Zetzellia mali Open Access Article Abstract Page Full-Text 1 - Comparison of population density and spatial distribution of Tydeus longisetosus El-Bagoury & Momen, Tetranychus turkestani (Ugarov & Nikolskii) and their predator Zetzellia mali (Ewing) on two apple varieties S. Khodayari K. Kamali Y. Fathipour