A Chigger can refer to a number of things:

• Either of two parasitic arthropods with similar behaviors:
  • the chigoe flea (Tunga penetrans)
  • the larva of the harvest mite (Trombicula alfreddugesi).

The name originated as a corruption of chigoe, but the harvest mite is what is most commonly called a chigger in North America, due to its similar behavior.

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