Whitley, Charles Francis

Approximately 41,000 species of Acari are found nearly worldwide. Sizes range from 0.008 to 3cm in some fully engorged ticks. Acari have fused body segments and mouthparts adapted to piercing, sucking, biting, grating or sawing. Many species of Acari are parasitic and economically important. Encyclopedia Britannica Online. http://search.eb.com/eb/article-47842 (Retrieved 11/11/2008)

From the description of Charles Whitley - drawings of Acari, 1874. (University of Georgia). WorldCat record id: 298823362