- - A. balatus a tropical species of mite that causes a particularly severe type of scabies-like irritation.- A. folliculorum SYN: Demodex folliculorum.- A. gallinae SYN: Dermanyssus gallinae.- A. rhizoglypticus hyacinthi a species of mite that develops in spoiled onions and may cause dermatitis.
* * *ac·a·rus 'ak-ə-rəs n1) cap a genus of arachnids including a number of small mites and formerly including all mites and ticks
* * *n.a genus of mites. The flour mite, A. siro (T. farinae), is nonparasitic, but its presence in flour can cause a severe allergic dermatitis in flour-mill workers.
* * *Ac·a·rus (akґə-rəs) [L., from Gr. akari a mite] a genus of small mites of the family Acaridae. They are often ectoparasitic, causing itch, mange, and other skin diseases.
Medical dictionary. 2011.