books.google.com.au - The Acari, comprising mites and ticks, form one of the largest and biologically most diverse groups of the Arachnida. They are worldwide in distribution and rival the insects in the extent to which they have successfully colonized terrestrial and aquatic habitats. Some are significant crop pests, while...http://books.google.com.au/books/about/Principles_of_acarology.html?id=oPaEAAAAIAAJ&utm_source=gb-gplus-sharePrinciples of acarology
