acarus
n.
minute spider-like animal, mite
Acarina
Acarina or Acari are a
taxon of
arachnids that contains
mites and
ticks. The diversity of the Acari is extraordinary and its fossil history goes back to the
Devonian era. As a result, acarologists (the people who study mites and ticks) have proposed a complex set of taxonomic ranks to classify mites. In most modern treatments, the Acari is considered a
subclass of
Arachnida and is composed of 2-3 orders or superorders:
Acariformes,
Parasitiformes, and Opilioacariformes. The latter is often considered a subgroup within the Parasitiformes. The monophyly of the Acari is open to debate and the relationships of the acarine orders to other arachnids is not at all clear.
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acarus
Noun
1. a mite of the genus Acarus
(hypernym) mite
(member-holonym) Acarina, order Acarina
acari (mpl)
n.
acarina, order of mites and ticks
acaro (m)
n.
mite, acarus
Acari
(pl. )
of Acarus
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter.
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