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无气门目Astigmata螨类（即粉螨）对人能产主哮喘和皮炎，并能危害储藏的粮食。在经济上和医学上，粉螨均具有其重要性。在粮库中，最重要的粉螨是：粗脚粉螨AcarusSiro、腐食酪螨TyrophagusPutrescenti-ae、家食甜螨Glycyphagusdomesticus。在家庭中，最重要的螨类是屡尘螨Der
Astigmata Astigmata mites (ie, acaroid mites) produce asthma and dermatitis in humans and can harm stored food. Acaroid mites are both economically and medically important. Among the grain farms, the most important acaroid mites are Acarus Siro, Tyrophagus Putrescenti-ae and Glycyphagus domesticus. The most important mite in the family is Der Der