acarus

[ak-er-uh s] /ˈæk ər əs/
noun, plural acari
[ak-uh-rahy] /ˈæk əˌraɪ/ (Show IPA)
1.
a mite, especially of the genus Acarus.
Origin
1650-60; < Neo-Latin < Greek ákari mite
British Dictionary definitions for acarus

acarus

/ˈækərəs/
noun (pl) -ri (-ˌraɪ)
1.
any of the free-living mites of the widely distributed genus Acarus, several of which, esp A. siro, are serious pests of stored flour, grain, etc
Word Origin
C17: New Latin, from Greek akari a small thing, a mite
acarus in Medicine

Acarus Ac·a·rus (āk'ə-rəs)
n.
A genus of mites.