In 2007 & 2008, a study of injurious and beneficial mites inhabiting green plantings was carried out in the urban environment of the north-eastern region of Iran, recording 24 species at different localities. Six species, Eotetranychus willametti, Oligonychus ilicis, Tetranychus truncatus, T. tumidellus, Aceria fraxiniflora, and Aculus dimidiatus are recorded from Iran for the first time. Also, 18 species are new for the fauna of north-eastern provinces of Iran. Most of the collected mites are phytophagous (19 species), dominated by Tetranychidae, with the presence of Tenuipalpidae and Eriophyidae of secondary importance. It was found that Oligonychus ununguis and Tetranychus turkestani are the most common and important pest species of conifers and broad leaf plants respectively. Species of 4 families belonging to 2 orders were found as predators. Among them, Phytoseius corniger and Amblyseius bagdasarjani were the most common predatory mite species in green plantings of the study areas. Plant association and provincial records of identified species are given.

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