| acarus | Origin: NL, from Gr. The cheese mite, tick. <zoology> A genus including many species of small mites. Source: Websters Dictionary (01 Mar 1998) |
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| Acarus balatus | A tropical species of mite that causes a particularly severe type of scabies-like irritation. (05 Mar 2000) |
| Acarus folliculorum | A very common, universally distributed, and usually nonpathogenic species of mite that inhabits the hair follicles and sebaceous glands of humans, commonly around the nose and scalp margins. Synonym: Acarus folliculorum, Simonea folliculorum. (05 Mar 2000) |
| Acarus gallinae | The red hen-mite, a parasite of chickens, pigeons, and other birds; it sometimes attacks humans and causes an itching eruption, especially in sensitised individuals. Synonym: Acarus gallinae. Origin: derm-+ G. Nysso, to prick; L. Gallina, hen (05 Mar 2000) |
| Acarus hordei | The barley mite, a species that penetrates beneath the skin. (05 Mar 2000) |
| Acarus rhizoglypticus hyacinthi | A species that develops in spoiled onions and may cause dermatitis. (05 Mar 2000) |
| Acarus scabiei | A former term for Sarcoptes scabiei. (05 Mar 2000) |