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A pseudoscorpion, also known as a false scorpion or book scorpion, are arachnids belonging to the order Pseudoscorpiones, also known as Pseudoscorpionida or Chelonethida.
The Feaellidae are a family of pseudoscorpions with the single genus Feaella.
Panorpa is a genus of scorpion-flies that is widely dispersed, especially in the Northern hemisphere. However, they do not occur in western North America. Thirteen species occur in eastern Canada.
The Nemastomatidae are a family of harvestmen with about 170 described species in 16 recent genera. Several fossil species and genera are known.
Joseph Conrad Chamberlin was an American arachnologist who studied mainly pseudoscorpions. A native of Utah, he studied primarily at Stanford University while working most of his career in Oregon for the U.S. Department of Agriculture. Several species are named in his honor.
Lechytia is a genus of pseudoscorpions in the subfamily Lechytiinae within the family Chthoniidae. It is the sole genus in its subfamily and contains 22 described species from many parts of the world.
Chthoniidae is a family of pseudoscorpions within the superfamily Chthonioidea. The family contains more than 600 species in about 30 genera. Fossil species are known from Baltic, Dominican, and Burmese amber. Chthoniidae now includes the former families Tridenchthoniidae, and Lechytiidae which has been demoted to subfamilies.
The Chernetidae are a family of pseudoscorpions with over 650 described species and 110 genera.
Olpiidae is a family of pseudoscorpions in the superfamily Garypoidea. It contains the following genera:
Agyneta is a genus of dwarf spiders that was first described by J. E. Hull in 1911.
Dinocheirus is a genus of pseudoscorpions in the family Chernetidae.
Hans Henderickx was a Belgian entomologist specializing in Invertebrates born in Mol, Belgium.
Haplodrassus is a genus of ground spiders that was first described by R. V. Chamberlin in 1922. They range from 3 to 10 millimetres. H. signifer is the most widespread species, found across North America except for Alaska and northern Canada.
Garypus is a genus of pseudoscorpions in the family Garypidae. There are at least 20 described species in Garypus.
Cheliferidae is a family of pseudoscorpions in the order Pseudoscorpiones. There are at least 60 genera and 270 described species in Cheliferidae.
Syarinidae is a family of pseudoscorpions in the order Pseudoscorpiones. There are at least 20 genera and 110 described species in Syarinidae.
References
- Joel Hallan's Biology Catalog: Chthoniidae