Family Machilidae
Subfamily Machilinae
Genus Mesomachilis
Subgenus Mesomachilis
Mesomachilis leechi Sturm, 1991
Distribution: USA: California (Sturm, 1991).
Type Material: holotype ♂, allotype ♀ and paratype ♂ and ♀ at CAS (Sturm, 1991).
Mesomachilis nearctica Silvestri, 1911
Mixomachilis remingtoni Paclt, 1972
Distribution: USA: Arizona (Mendes, 1992; Sturm, 1991), California (Silvestri, 1911;
Sturm, 1991; Baldo et al., 2010), Colorado (Silvestri, 1911), Nevada (Sturm, 1991; Baldo
et al., 2010), and Utah (Baldoetal2010, KNWR:Ento:8123).
Type Material: Type ♀ and paratype ♂ and ♀ at IEA (Sturm, 1991).
Mesomachilis cf. nearctica sensu Baldo et al. (2010)
Distribution: USA: California, Nevada, and Utah (Baldo et al., 2010).
Mesomachilis strenua (Silvestri, 1911)
Machilis strenua Silvestri, 1911
Pedetontus strenuus Smith, 1970
Distribution: USA: California (Silvestri, 1911).
Subgenus Rarochilis
Mesomachilis californica Sturm, 1991
Distribution: USA: California (Sturm, 1991).
Type Material: holotype ♂, allotype ♀, and paratype ♂ and ♀ at CAS (Sturm, 1991).
Mesomachilis canadensis Sturm, 1991
Distribution: CANADA: British Columbia (Sturm, 1991). USA: Oregon (KNWR:Ento:8159).
Type Material: holotype ♂; allotype ♀; 9 ♂, 16 ♀, and 14 immature paratypes at USNM
(Sturm, 1991).
Genus Trigoniophthalmus
Trigoniophthalmus alternatus (Silvestri, 1904)
Machilis alternata Silvestri, 1904
Distribution: USA: New York (Silvestri, 1911; Wygodzinsky and Schmidt, 1980); Connecticut,
Maryland, New Jersey, and Pennsylvania (Wygodzinsky and Schmidt, 1980).
Subfamily Petrobiinae
Genus Leptomachilis
Leptomachilis californica Sturm, 1991
Distribution: USA: California (Sturm, 1991). Type Material: type ♂, allotype ♀, and a
paratype ♂ at CAS (Sturm, 1991).
Genus Meximachilis
Meximachilis cokendolpheri Kaplin, 1994
Distribution: USA: New Mexico (Kaplin, 1994).
Genus Neomachilis
Neomachilis halophila Silvestri, 1911
Neomachilis halophilus Silvestri, 1911
Distribution: USA: California (Silvestri, 1911; Benedetti, 1973; Mendes, 1992).
Genus Pedetontoides
Pedetontoides atlanticus Mendes, 1981
Distribution: USA: North Carolina (Mendes, 1981).
Type Material: holotypes and paratypes at PAS except for two paratype ♀’s in the
collection of Luís Mendes (Luís Mendes, personal communication).
Pedetontoides cf. atlanticus
Distribution: CANADA: British Columbia (KNWR:Ento:8191)
Genus Pedetontus
Subgenus Pedetontus
Pedetontus californicus (Silvestri, 1911)
Distribution: USA: California (Silvestri, 1911; Mendes, 1992; Sturm, 2001).
Pedetontus saltator Wygodzinsky and Schmidt, 1980
Distribution: USA: Connecticutt, Massachusetts, New Jersey, New York, and Pennsylvania
(Wygodzinsky and Schmidt, 1980).
Pedetontus superior (Silvestri, 1911)
Distribution: USA: Oregon (Silvestri, 1911).
Pedetontus schicki Sturm, 2001
Distribution: USA: California (Sturm, 2001).
Pedetontus yosemite Sturm, 2001
Distribution: USA: California (Sturm, 2001).
Subgenus Verhoeffilis
Pedetontus calcaratus (Silvestri, 1911)
Distribution: CANADA: British Columbia (Sturm, 1991; KNWR:Ento:8151, KNWR:Ento:8161).
USA: Colorado (Silvestri, 1911; Mendes, 1981).
Pedetontus gershneri Allen, 1995
Distribution: USA: Arkansas (Allen, 1995).
Pedetontus persquamosus (Silvestri, 1911)
Distribution: USA: California (Silvestri, 1911).
Pedetontus submutans (Silvestri, 1911)
Distribution: CANADA: British Columbia (KNWR:Ento:8158). USA: Alaska (UAM:Ento:87248),
Oregon (Silvestri, 1911, KNWR:Ento:8197), and Washington (Silvestri, 1911).
Genus Petridiobius
Subgenus Petridiobius
Petridiobius arcticus (Folsom, 1902)
Machilis arctica Folsom, 1902
Distribution: CANADA: British Colulmbia (KNWR:Ento:8195) USA: Alaska (Folsom,
1902; Sturm and Bowser, 2004, KNWR:Ento:7292).
Subgenus Pacltiobius
Petridiobius canadensis Sturm, 2001
Distribution: CANADA: British Columbia (Sturm, 2001).
Genus Petrobius
Petrobius brevistylis Carpenter, 1913
Petrobius canadensis Paclt, 1969
Distribution: CANADA: New Brunswick and Nova Scotia (Wygodzinsky and Schmidt,
1980). USA: Maine, Massachusetts, New Hampshire, and Rhode Island (Wygodzinsky
and Schmidt, 1980)
Family Meinertellidae
Genus Hypomachiloides
Hypomachiloides forthaysi Packauskas and Shofner, 2010
Distribution: Kansas (Packauskas and Shofner, 2010).
Hypomachiloides texanus Silvestri, 1911
Distribution: Texas (Silvestri, 1911).
Genus Machilinus
Machilinus aurantiacus Schött, 1897
Machilis aurantiacus Schött, 1897
Machilinus nevadensis Sweetman, 1937
Distribution: CANADA: British Columbia (Sturm and Bach de Roca, 1992; KNWR:Ento:8130).
USA: California (Silvestri, 1911; Sturm and Bach de Roca, 1992); Colorado (Silvestri,
1911); Arizona, Nevada, and Utah (Sturm and Bach de Roca, 1992).
Genus Machiloides
Machiloides banksi Silvestri, 1911
Distribution: USA: Arkansas (Allen, 1995), Maryland (Wygodzinsky and Schmidt,
1980), North Carolina (Mendes, 1981), and Virginia (Silvestri, 1911; Mendes, 1992).
Machiloides petauristes Wygodzinsky and Schmidt, 1980
Distribution: USA: New Jersey (Wygodzinsky and Schmidt, 1980)
Genus Neomachilellus
Neomachilellus sp.
Distribution: USA: Georgia (Sturm, 1984; Wygodzinsky, 1967) and Florida (Wygodzinsky,
1967).