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acarid
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Illustration showing eight types of mites and ticks, each labeled with their common and scientific names, including tropical rat mite, Opilioacarus texanus, Holothyrus legendrei, fur mite, black-legged tick, soil mite, itch mite, and American house-dust mite. acarid Acarid Illustration of Holothyrus legendrei, a reddish-brown mite with an oval body and eight segmented legs, shown from above to highlight its arachnid features. Detailed illustration of an itch mite, Sarcoptes scabiei, showing its rounded body, short legs, and fine hair-like structures extending from its body, viewed from above. Detailed illustration of an American house-dust mite (Dermatophagoides farinae), showing its oval, translucent body and eight segmented legs, viewed from above. mite; Opilioacarus texanus soil mite fur mite tropical rat mite
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acarid: References & Edit History

Additional Reading

The acarids (mites and ticks) are examined in Tyler A. Woolley, Acarology: Mites and Human Welfare (1988), a comprehensive treatment of the entire field; G.W. Krantz, A Manual of Acarology, 2nd ed. (1978), a systematic arrangement; Burrus McDaniel, How to Know the Mites and Ticks (1979), a comprehensively illustrated work of U.S. mites and ticks; W. Helle and M.W. Sabelis (eds.), Spider Mites: Their Biology, Natural Enemies, and Control, 2 vol. (1986); Asher E. Treat, Mites of Moths and Butterflies (1975), presenting almost 100 species classified as scavengers, hitchhikers, or parasites and discussed on a global basis; Frederick D. Obenchain and Rachel Galun (eds.), Physiology of Ticks (1982), a collection of review articles; and John R. Sauer and J. Alexander Hair (eds.), Morphology, Physiology, and Behavioral Biology of Ticks (1986).

Nixon A. Wilson

Article Contributors

Primary Contributors

  • Nixon A. Wilson
    Professor of Biology, University of Northern Iowa, Cedar Falls. Author of numerous papers on mites and ticks.

Other Encyclopedia Britannica Contributors

Article History

Type Description Contributor Date
Modified link of Web site: National Center for Biotechnology Information - PubMed Central - Diversity and Distribution of Mites Revealed by Contamination Survey in Public Genomic Databases. Jul 18, 2026
Add new Web site: National Center for Biotechnology Information - PubMed Central - Diversity and Distribution of Mites Revealed by Contamination Survey in Public Genomic Databases. Feb 27, 2026
Add new Web site: Assiut Journal of Agricultural Sciences - Identification Key for some Acarid Mites (Acari: Acaridae) Extracted from Termite Nests with Description of Two New Species (PDF). Jun 20, 2025
Added images showing an acarid and the underside of a tick's hypostome (holdfast organ). Sep 02, 2016
Added art showing the internal features of a mite. Jun 22, 2012
Added photos and illustrations of mites and ticks. Nov 22, 2011
Classification section updated to reflect changes in superorder, order, and suborder taxonomy. Nov 22, 2011
Media added. Aug 07, 2009
Article revised and updated. Mar 01, 2007
Article added to new online database. Aug 23, 1998
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