Crossword Genius

Tiny type of arachnid (4)

Ross

I believe the answer is:

mite

(Other definitions for mite that I've seen before include "Tiny arachnid, person or amount of money" , "The widow's contribution, just in time" , "Minute arachnid" , "The widow's small offering" , "Microscopic animal" .)

I've seen this clue in The Times.
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