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Abstract
A survey was made to determine the mite species occurring on the foliage of 17 native species of pines in California. Mites were removed from the needles by an air-agitated water bath; 23 different families were recovered. The Phytoseiidae, Tetranychidae, and Tenuipalpidae were the most frequently recovered families. A new species of phytoseiid, Amblyseius muricatus, is described.