Page last updated Wed 05 Feb 2020


Use the links to navigate the hierarchy of invertebrate classification.

  Subphylum Chelicerata

Class Arachnida (spiders, mites, scorpions, etc.)

    Subclass Acari -- Wisconsin!
    Order Araneae -- midwestern North America.
    Order Opiliones -- midwestern North America.
    Order Pseudoscorpiones -- midwestern North America.
    Order Amblypygi
    Order Palpigradi
    Order Ricinulei
    Order Schizomida
    Order Scorpionida
    Order Solifugae
    Order Thelyphonida

Taxon Information

The Class Arachnida has been reported (or is assumed) to occur in fresh waters. This taxon has been reported from Wisconsin.

(These statements were generated automatically from the WInvertebrates database.)

Literature Records

  • Arachnida, [North Central United States] (Underhill et al., 1982).


  • Smith, I.M., D.R. Cook & B.P. Smith. 2010. Water mites (Hydrachnidiae) and other arachnids. [in] J.H. Thorp & A.P. Covich (eds.). Ecology and Classification of North American Freshwater Invertebrates, 3rd edition: 485-586.
  • Smith, D.G. 2001. Arachnida (Water mites, spiders). Pennak's Freshwater Invertebrates of the United States, 4th edition: 401-420.
  • Underhill, J.C., W.D. Schmid & D.E. Gilbertson. 1982. Taxonomic Keys to the Common Animals of the North Central States, exclusive of the parasitic worms, terrestrial insects, and birds, 4th edition. 205 pp.

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