a mite, especially of the genus Acarus.
Historical Examples

Schlotheim thought that the spines on Agnostus pisiformis were segmented and compared them with the antenn of acarus.
The Appendages, Anatomy, and Relationships of Trilobites Percy Edward Raymond

acarus farinæ DeGeer, as its name indicates, is found in flour.
Our Common Insects Alpheus Spring Packard

A parasite known as the acarus folliculorum infests the sebaceous glands.
Cooley’s Practical Receipts, Volume II Arnold Cooley

Yet the acarus has eight legs, like a spider, and the harvest-bug six, like an insect.
Everyday Objects W. H. Davenport Adams

To the invasion of the cutaneous structures by an animal parasite, the sarcoptes scabiei (acarus scabiei).
Essentials of Diseases of the Skin Henry Weightman Stelwagon

It would be an acarus, he observes, but it has only six legs.
An Introduction to Entomology: Vol. I (of 4) William Kirby

We have seen a remarkable instance of this in the acarus marginatus of Hermann.
Animal Parasites and Messmates P. J. Van Beneden

It has not been demonstrated that the acarus so common in flour has had any injurious effect when eaten.
Cooley’s Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades…, Sixth Edition, Volume I Arnold Cooley

The acarus autumnalis, or mower’s mite, has been found in the skin of this part, and it is capable of causing great distress.
A System of Practical Medicine By American Authors, Vol. II Various

We now come to the genus acarus (Tyroglyphus), of which the cheese and sugar mites are examples.
Our Common Insects Alpheus Spring Packard

noun (pl) -ri (-ˌraɪ)
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

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


Read Also:

  • Acarine

    any of numerous arachnids of the order Acarina, comprising the mites and ticks. belonging or pertaining to the order Acarina. acarine ac·a·rine (āk’ə-rīn’, -rēn’) adj. Relating to or caused by an acarid. n. An acarid.

  • Acariasis

    infestation with acarids, especially mites. a skin disease caused by such infestation, as scabies. noun infestation of the hair follicles and skin with acarids, esp mites acariasis ac·a·ri·a·sis (āk’ə-rī’ə-sĭs) n. pl. ac·a·ri·a·ses (-sēz’) A disease, usually of the skin, caused by infestation with mites. Also called acaridiasis, acarinosis.

  • Acaricide

    a substance or preparation for killing acarids. noun any drug or formulation for killing acarids acaricide a·car·i·cide (ə-kār’ĭ-sīd’) adj. Destructive to acarids. n. An agent that destroys acarids.

  • Acarid

    an acarine, especially a mite of the family Acaridae. of or relating to an acarid. Historical Examples As regards the scab, itch, and mange insects or mites (acarid), three perfectly distinct forms are known. Parasites T. Spencer Cobbold Many insects are always covered with certain species of acarid. Animal Parasites and Messmates P. J. Van […]

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