Taxa included

Nelson, S.O., Jr (1975). A systematic study of Michigan Pseudoscorpionida (Arachnida). American Midland Naturalist 93: 257–301.

Taxon
Pseudoscorpiones de Geer, 1778 258–262, (as Pseudoscorpionida), Pseudoscorpiones de Geer
Ephippiochthonius tetrachelatus (Preyssler, 1790) (Pseudoscorpiones: Chthoniidae) 278–279, figs 4–9, Chthonius (Ephippiochthonius) tetrachelatus (Preyssler)
Apochthonius moestus (Banks, 1891) (Pseudoscorpiones: Chthoniidae) 279–280, figs 14–17 (misidentification; true identification unknown), Apochthonius moestus (Banks)
Mundochthonius rossi Hoff, 1949 (Pseudoscorpiones: Chthoniidae) 279, figs 10–13, Mundochthonius rossi
Microbisium confusum Hoff, 1946 (Pseudoscorpiones: Neobisiidae) 280–281, figs 20–24, Microbisium confusum
Microbisium brunneum (Hagen, 1868) (Pseudoscorpiones: Neobisiidae) 280, figs 18–19, Microbisium brunneum (Hagen)
Syarinus enhuycki Muchmore, 1968 (Pseudoscorpiones: Syarinidae) 281–282, figs 25–28, Syarinus enhuycki
Larca granulata (Banks, 1891) (Pseudoscorpiones: Larcidae) 282, figs 29–31, Larca granulata (Banks)
Apocheiridium stannardi Hoff, 1952 (Pseudoscorpiones: Cheiridiidae) 283–284, figs 35–39, Apocheiridium stannardi
Pseudogarypus banksi Jacot, 1938 (Pseudoscorpiones: Pseudogarypidae) 283, figs 32–34, Pseudogarypus
Lamprochernes minor Hoff, 1949 (Pseudoscorpiones: Chernetidae) 284–285, figs 44–45, Lamprochernes minor
Americhernes oblongus (Say, 1821) (Pseudoscorpiones: Chernetidae) 284, figs 40–43, Lamprochernes oblongus (Say)
Parachernes squarrosus Hoff, 1949 (Pseudoscorpiones: Chernetidae) 285, figs 46–47, Parachernes squarrosus
Pselaphochernes parvus Hoff, 1945 (Pseudoscorpiones: Chernetidae) 285–286, figs 2, 48–49, Pselaphochernes parvus
Dendrochernes morosus (Banks, 1895) (Pseudoscorpiones: Chernetidae) 286, figs 50–51, Dendrochernes morosus (Banks)
Acuminochernes tacitus Hoff, 1961 (Pseudoscorpiones: Chernetidae) 287, figs 52–53, Acuminochernes tacitus
Acuminochernes crassopalpus (Hoff, 1945) (Pseudoscorpiones: Chernetidae) 287–288, figs 54–55, Acuminochernes crassopalpus (Hoff)
Dinocheirus horricus Nelson and Manley, 1972 (Pseudoscorpiones: Chernetidae) 288–289, figs 59–61, Dinocheirus horricus
Mirochernes dentatus (Banks, 1895) (Pseudoscorpiones: Chernetidae) 288, figs 56–58, Mirochernes dentatus (Banks)
Dinocheirus pallidus (Banks, 1890) (Pseudoscorpiones: Chernetidae) 289, figs 62–63, Dinocheirus pallidus (Banks)
Hesperochernes tamiae Beier, 1930 (Pseudoscorpiones: Chernetidae) 290, figs 68–69, Hesperochernes tamiae
Illinichernes distinctus Hoff, 1949 (Pseudoscorpiones: Chernetidae) 290, figs 64–67, Illinichernes distinctus
Chernes ewingi (Hoff, 1949) (Pseudoscorpiones: Chernetidae) 291, figs 70–71, Hesperochernes ewingi (Hoff)
Chernes lymphatus (Hoff, 1949) (Pseudoscorpiones: Chernetidae) 291–292, figs 72–73, Hesperochernes lymphatus (Hoff)
Chernes amoenus (Hoff, 1963) (Pseudoscorpiones: Chernetidae) 292, figs 74–75, Hesperochernes amoenus
Dactylochelifer copiosus Hoff, 1945 (Pseudoscorpiones: Cheliferidae) 292–293, figs 76–77, Dactylochelifer copiosus
Chelifer cancroides (Linnaeus, 1758) (Pseudoscorpiones: Cheliferidae) 293–294, figs 78–81, Chelifer cancroides (Linnaeus)
Parachelifer monroensis Nelson, 1975 (Pseudoscorpiones: Cheliferidae) 294–297, figs 82–84, Parachelifer monroensis
Idiochelifer nigripalpus (Ewing, 1911) (Pseudoscorpiones: Cheliferidae) 297, figs 85–89, Idiochelifer nigripalpus (Ewing)
Paisochelifer callus (Hoff, 1945) (Pseudoscorpiones: Cheliferidae) 298, figs 90–91, Paisochelifer callus (Hoff)