Abstract
Agistemus pallinii n. sp. (Acari: Stigmaeidae) was found in citrus orchards in Viçosa, MG, Brazil, in 2004. The mites were found feeding on Panonychus citri Mc Gregor (Tetranychidae). A key to all species of Agistemus found on citrus world-wide, including the new species, is provided.