
Belongs within: Pedipalpi.
The Schizomida are a group of less than 200 species of minute soil-dwelling arachnids, with the majority of species found in rainforest leaf litter. Schizomids are generally less than 5 mm in length and have long, tactile anterior legs. The posterior flagellum is sexually dimorphic, being bulbous and unsegmented in the male and elongate and segmented in the female (Harvey 2002).
<==Schizomida [Schizopeltidia] | i. s.: ApozomusH11 | ZomusH11 | Stenoschizomus tejeriensisVMT06 | Wuayuuzomus Armas & Colmenares 1996VMT06 |--Calcitro Petrunkevitch 1945 [Calcitronidae]H02 | `--C. fischeri Petrunkevitch 1945S93 |--ProtoschizomidaeS07 | |--Protoschizomus Rowland 1975M-RFC16 | | |--P. franckei Monjaraz-Ruedas 2013M-RCF16 | | |--P. occidentalis Rowland 1975M-RCF16 | | |--P. pachypalpusM-RFP20 | | `--P. purificacion Cokendolpher & Reddell 1992M-RCF16 | `--Agastoschizomus Rowland 1971M-RFC16 | |--A. huitzmolotitlensis Rowland 1975M-RFC16 | |--A. juxtlahuacensis Montaño-Moreno & Francke 2009M-RCF16 | |--A. lucifer Rowland 1971M-RCF16 | |--A. patei Cokendolpher & Reddell 1992M-RCF16 | |--A. stygius Cokendolpher & Reddell 1992M-RCF16 | |--A. tamaulipensis Monjaraz-Ruedas, Francke & Cokendolpher 2016M-RCF16 | |--A. tenebris Monjaraz-Ruedas, Francke & Cokendolpher 2016M-RCF16 | `--A. texanus Monjaraz-Ruedas, Francke & Cokendolpher 2016M-RCF16 `--Hubbardiidae [Schizomidae, Schizomina, Schizonotidae, Tartarides]S07 | i. s.: Megaschizomus [Megaschizominae]H02 | Notozomus Harvey 1992H11 | ParadraculoidesABH14 | Calcoschizomus Pierce 1951H02 | `--C. latisternum Pierce 1951S93 | Onychothelyphonus Pierce 1950H02 | `--O. bonneri Pierce 1950S93 | Ovozomus Harvey 2001H11 | |--O. lunatus (Gravely 1911) (see below for synonymy)H11 | `--O. peradeniyensis (Gravely 1911) [=Schizomus peradeniyensis]H11 | Tripeltis Thorell 1889T89 | |--*T. grassii Thorell 1889T89 | `--T. cambridgei Thorell 1889T89 | Draculoides Harvey 1992HH95 | |--*D. vinei (Harvey 1988) [=Schizomus vinei]HH95 | `--D. bramstokeri Harvey & Humphreys 1995T13 | Schizomus Cook 1899 (see below for synonymy)H11 | |--*S. crassicaudatus (O.P.-Cambridge 1872)H11 (see below for synonymy) | |--S. joshuensisHA91 | |--S. palaciosi Reddell & Cokendolpher 1986A05 | |--S. perplexus Gravely 1915 [=S. (Trithyreus) perplexus, Notozomus perplexus]H11 | |--S. siamensisA99 | `--S. wessoniHA91 | Trithyreus Kraepelin 1899H11, H02 | |--T. cambridgeiK14 | |--T. modestusK14 | |--T. sawadai Kishida 1930TYM08 | `--T. suboculatus Pocock 1900 (n. d.) [=Schizomus suboculatus]H11 |--Hubbardia Cook 1899 [Hubbardiinae]M-RFP20 | `--H. pentapeltis Cook 1899GE02 `--+--Surazomus Reddell & Cokendolpher 1995M-RFP20 | |--S. brasiliensis Kraus 1967VMT06 [=Schizomus brasiliensisM-RFP20] | |--S. escondidoM-RFP20 | `--S. manausM-RFP20 `--+--+--Hansenochrus Reddell & Cokendolpher 1995M-RFP20, VMT06 | | |--H. acrocaudatus Rowland & Reddell 1979VMT06 | | |--H. flavescens Hansen & Sörensen 1905VMT06 | | |--H. humbertoiM-RFP20 | | |--H. simonis Hansen & Sörensen 1897VMT06 [=Schizomus simonisM-RFP20] | | |--H. trinidanusVMT06 | | |--H. urbanii Villarreal Manzanilla & Teruel 2006VMT06 | | `--H. yolandae González-Sponga 1997VMT06 | `--Rowlandius Reddell & Cokendolpher 1995M-RFP20 | |--R. falcifemur Teurel 2003VMT06 | |--R. humbertoiM-RFP20 | `--R. lantiguaiM-RFP20 `--+--Sotanostenochrus Reddell & Cokendolpher 1991M-RFP20 | |--S. cookeiM-RFP20 | `--S. mitchelliM-RFP20 `--+--Baalrog Monjaraz-Ruedas et al. 2019M-RFP20 | |--B. firstmani (Rowland 1973)M-RFP20, G11 [=Stenochrus firstmaniM-RFP20] | `--+--B. magicoM-RFP20 | `--B. sbordonii (Brignoli 1973) [=Stenochrus sbordonii]M-RFP20 `--+--+--Mayazomus Reddell & Cokendolpher 1995M-RFP20 | | |--M. aluxeM-RFP20 | | `--M. hoffmannaeM-RFP20 | `--+--Troglostenochrus Monjaraz-Ruedas et al. 2019M-RFP20 | | |--T. palaciosi (Reddell & Cokendolpher 1986) [=Stenochrus palaciosi]M-RFP20 | | `--T. valdezi (Monjaraz-Ruedas 2012) [=Stenochrus valdezi]M-RFP20 | `--Heteroschizomus Rowland 1973M-RFP20 | |--H. goodnightorum [=Schizomus goodnightorum, Stenochrus goodnightorum]M-RFP20 | `--+--+--H. kekchiM-RFP20 | | `--H. silvino [=Stenochrus silvino]M-RFP20 | `--+--H. meambar Armas & Víquez 2010 [=Stenochrus meambar]M-RFP20 | `--H. orthoplax [=Stenochrus orthoplax]M-RFP20 `--+--+--Pacal Reddell & Cokendolpher 1995M-RFP20 | | |--P. tepezcuintle (Armas & Cruz-López 2009) [=Stenochrus tepezcuintle]M-RFP20 | | `--+--P. moisii (Rowland 1973) [=Stenochrus moisii]M-RFP20 | | `--P. trilobatusM-RFP20 | `--Nahual Monjaraz-Ruedas et al. 2019M-RFP20 | |--N. caballero [=Stenochrus caballero]M-RFP20 | `--+--N. lanceolatus [=Stenochrus lanceolatus]M-RFP20 | `--+--N. bokmaiM-RFP20 | `--N. pallidus [=Stenochrus pallidus]M-RFP20 `--+--Ambulantactus Monjaraz-Ruedas et al. 2019M-RFP20 | |--A. montielaeM-RFP20 | `--+--A. aquismonM-RFP20 | `--A. davisi (Gertsch 1940)M-RFP20 `--+--+--Olmecazomus Monjaraz-Ruedas et al. 2019M-RFP20 | | |--O. cruzlopeziM-RFP20 | | `--O. santibaneziM-RFP20 | `--+--Schizophyxia Monjaraz-Ruedas et al. 2019M-RFP20 | | |--S. bartolo (Rowland 1973) [=Stenochrus bartolo]M-RFP20 | | `--S. lukensi [=Stenochrus lukensi]M-RFP20 | `--Harveyus Monjaraz-Ruedas et al. 2019M-RFP20 | |--H. mulaikiM-RFP20 | `--+--H. mexicanus (Rowland 1971) (see below for synonymy)M-RFP20 | `--+--H. contrerasiM-RFP20 | `--H. reddelliM-RFP20 `--Stenochrus Chamberlin 1922M-RFP20 | i. s.: S. leon Armas 1995M-RFP20 |--S. alcalai Monjaraz-Ruedas & Francke 2018M-RFP20 `--+--S. chimalapasM-RFP20 `--+--S. grutaM-RFP20 |--S. guatemalensis Chamberlin 1922M-RFP20 |--S. pecki Rowland 1973 [=Schizomus pecki]M-RFP20 `--S. portoricensis Chamberlin 1922M-RFP20, GE02
Harveyus mexicanus (Rowland 1971) [=Schizomus mexicanus, Stenochrus mexicanus]M-RFP20
Ovozomus lunatus (Gravely 1911) [=Schizomus (Trithyreus) lunatus; incl. S. remyi Lawrence 1969, S. similis Hirst 1913, *Ovozomus similis]H11
Schizomus Cook 1899 [=Nyctalops O.P.-Cambridge 1872 non Wagler 1832, Schizonotus Thorell 1888 non Ratzeburg 1852]H11
*Schizomus crassicaudatus (O.P.-Cambridge 1872)H11 [=*Nyctalops crassicaudatusH11, *Schizonotus crassicaudatusH11; incl. N. tenuicaudatus Cambridge 1872H02, Schizonotus tenuicaudatusT89]
*Type species of generic name indicated
References
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[A99] Ax, P. 1999. Das System der Metazoa II. Ein Lehrbuch der phylogenetischen Systematik. Gustav Fisher Verlag: Stuttgart (translated: 2000. Multicellular Animals: The phylogenetic system of the Metazoa vol. 2. Springer).
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[H02] Harvey, M. S. 2002. The neglected cousins: what do we know about the smaller arachnid orders? Journal of Arachnology 30 (2): 357–372.
[H11] Harvey, M. S. 2011. Notes on some Old World schizomids of the genera Ovozomus and Schizomus (Schizomida: Hubbardiidae). Records of the Western Australian Museum 26 (2): 202–208.
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[HA91] Humphreys, W. F., & A. Adams. 1991. The subterranean aquatic fauna of the North West Cape peninsula, Western Australia. Records of the Western Australian Museum 15 (2): 383–411.
[K14] Kraepelin, K. 1914. Die Skorpione und Pedipalpen von Neu-Caledonien und den benachbarten Inselgruppen. In: Sarasin, F., & J. Roux (eds) Nova Caledonia: Forschungen in Neu-Caledonian und auf den Loyalty-Inseln. A. Zoologie vol. 1 pt 4 pp. 327–337. C. W. Kreidels Verlag: Wiesbaden.
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[TYM08] Tennent, W. J., M. Yasuda & K. Morimoto. 2008. Lansania Journal of arachnology and zoology—a rare and obscure Japanese natural history journal. Archives of Natural History 35 (2): 252–280.
[T89] Thorell, T. 1889. Viaggio di Leonardo Fea in Birmania e regioni vicine. XXI.—Aracnidi Artrogastri Birmani raccolti da L. Fea nel 1885–1887. Annali del Museo Civico di Storia Naturale di Genova, Serie 2a, 7: 521–729.
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