ricinuleid

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arachnid diversity

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ricinuleid

arachnid order

Also known as: Ricinulei

Learn about this topic in these articles:

annotated classification

In arachnid: Annotated classification
Order Ricinulei (ricinuleids) 30 primarily tropical species. Size 8–10 mm; abdomen of 9 segments, last 3 forming taillike pygidium; 6-legged larval form. Subclass Acari, Acarina, or Acarida (mites and ticks)
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characteristics

In arachnid: Body and appendages
Among the spiderlike ricinuleids (order Ricinulei), special copulatory organs are located on the third pair of legs. Some mites, particularly immature individuals, have only two or three pairs of legs.
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