chigger

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chigger

chigger minute, six-legged, reddish larva of the harvest mite , one of various red bugs widely distributed throughout the world and common in the S United States. Attaching itself by its mouthparts to the skin of its vertebrate host, the chigger injects saliva that destroys cells and may cause an intense irritation known as red-bug dermatitis. The food of the chigger consists of the cellular contents and tissue fluid of the host. Certain Asian species carry minute organisms (rickettsias) that cause scrub typhus, a disease of humans. Chiggers are classified in the phylum Arthropoda , class Arachnida, order Acarina, family Trombidiidae.

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chigger

World Encyclopedia | 2005 | Â© World Encyclopedia 2005, originally published by Oxford University Press 2005. (Hide copyright information) Copyright

chigger (harvest mite or red bug) Tiny, red larva of some kinds of mites found worldwide. Adults lay eggs on plants and hatched larvae find an animal host. Length: 0.1–16mm (0.004–0.6in). Order Acarina; family Trombiculidae.

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	Larson, Hope. Chiggers.(Young adult review)(Brief article)(Book review) Magazine article from: Kliatt; 9/1/2008
	Scrub typhus reemergence in the Maldives.(Dispatches) Magazine article from: Emerging Infectious Diseases; 12/1/2003
	Lyme Disease, Hantavirus Discoveries Are Announced in New Vector Borne and Zoonotic Diseases Journal. Business Wire; 4/25/2001

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