books.google.co.uk - Tetranychid mites form the family of phytophagous Acari with the most severe economic effect on agriculture and several of these mites are injurious to many crops all over the world. This catalogue contains information on the systematic position of the 1,189 known tetranychid species, their previous...http://books.google.co.uk/books/about/World_Catalogue_of_the_Spider_Mite_Famil.html?id=OALu9cfevl8C&utm_source=gb-gplus-shareWorld Catalogue of the Spider Mite Family (Acari