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IRMNG taxon details

Xyalidae Chitwood, 1951

115193  (urn:lsid:irmng.org:taxname:115193)

  1. Biota
  2. Animalia (Kingdom)
  3. Nematoda (Phylum)
  4. Chromadorea (Class)
  5. Monhysterida (Order)
  6. Xyalidae (Family)
accepted
Family
Scaptrellidae · unaccepted
Xyalinidae · unaccepted

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  1. Genus Allomonhystera Micoletzky, 1924 accepted as Daptonema Cobb, 1920
    1. Species Allomonhystera tripapillata Micoletzky, 1923 accepted as Daptonema setosus Bütschli, 1874
  2. Genus Ammotheristus Lorenzen, 1977
    1. Species Ammotheristus helgolandicus Riemann, 1967
    2. Species Ammotheristus subtilis (Lorenzen, 1972)
  3. Genus Amphimonhystera Timm, 1961
    1. Species Amphimonhystera bella Bussau, 1993
  4. Genus Amphimonhystera Allgén, 1929
    1. Species Amphimonhystera anechma (Southern, 1914)
    2. Species Amphimonhystera circula Guo & Warwick, 2001
    3. Species Amphimonhystera galea Fadeeva, 1984
    4. Species Amphimonhystera helgolandica Riemann, 1967
    5. Species Amphimonhystera marisalbi Tchesunov & Mokievsky, 2005
    6. Species Amphimonhystera molloyensis Tchesunov & Mokievsky, 2005
    7. Species Amphimonhystera pallida Tchesunov & Mokievsky, 2005
    8. Species Amphimonhystera paranechma Allgén, 1935
    9. Species Amphimonhystera subtilis Lorenzen, 1972
  5. Genus Arabanema Turpeenniemi, Nasira & Maqbool, 2001
    1. Species Arabanema pakistanensis Turpeenniemi, Nasira & Maqbool, 2001
  6. Genus Austronema Cobb, 1914 (uncertain > nomen dubium)
    1. Species Austronema spirurum Cobb, 1914
  7. Genus Buccolaimus Allgén, 1959 (uncertain > nomen dubium)
    1. Species Buccolaimus grahami Allgén, 1959
  8. Genus Capsula Bussau, 1993
    1. Species Capsula galeata Bussau, 1993
  9. Genus Cenolaimus Cobb, 1933
    1. Species Cenolaimus sapeloensis Nichols, 1979
    2. Species Cenolaimus supersentiens Cobb, 1933
  10. Genus Cienfuegia Armenteros, Vincx & Decraemer, 2009
    1. Species Cienfuegia cachoi Armenteros, Vincx & Decraemer, 2009
  11. Genus Cobbia de Man, 1907
    1. Species Cobbia caledonia Warwick & Platt, 1973
    2. Species Cobbia cyatholaimoides Allgén, 1929 accepted as Pomponema cyatholaimoides (Allgén, 1929)
    3. Species Cobbia dentata Gerlach, 1953
    4. Species Cobbia macrostoma Timm, 1963 accepted as Sphaerotheristus macrostoma Timm, 1968
    5. Species Cobbia mawsoni Cobb, 1930
    6. Species Cobbia sabulicola Filipjev, 1918 accepted as Theristus sabulicola (Filipjev, 1918)
    7. Species Cobbia scutata Wieser, 1956
    8. Species Cobbia simplex Allgén, 1929
    9. Species Cobbia trefusiaeformis de Man, 1907
    10. Species Cobbia tridonta Filipjev, 1918
    11. Species Cobbia triodonta Filipjev, 1918
    12. Species Cobbia truncata Wieser, 1959
    13. Species Cobbia urinator Wieser, 1959
  12. Genus Corononema Nicholas & Stewart, 1995
    1. Species Corononema parvum Nicholas & Stewart, 1995
    2. Species Corononema thai Nicholas & Stewart, 1995
  13. Genus Cylindotheristus accepted as Daptonema Cobb, 1920
  14. Genus Dactylaimoides Blome, 2002
    1. Species Dactylaimoides coronifer Blome, 2002
  15. Genus Dactylaimus Cobb, 1920
    1. Species Dactylaimus aequalis Cobb, 1920
  16. Genus Daptonema Cobb, 1920
    1. Species Daptonema acanthospiculum Allgén, 1959
    2. Species Daptonema acidus Vitiello, 1970
    3. Species Daptonema acrilabiatum (De Coninck & Schuurmans Stekhoven, 1933)
    4. Species Daptonema acrilabiatus De Coninck & Schuurmans Stekhoven, 1933
    5. Species Daptonema adiecta
    6. Species Daptonema adiectus (Schulz, 1932)
    7. Species Daptonema aegypticum
    8. Species Daptonema aegypticus Gerlach, 1964
    9. Species Daptonema albigensis (Riemann, 1966)
    10. Species Daptonema altaicus (Tsalolikhin, 1985)
    11. Species Daptonema alternum Wieser, 1956
    12. Species Daptonema alternus Wieser, 1956
    13. Species Daptonema angulatum Schuurmans Stekhoven, 1950
    14. Species Daptonema angulatus Schuurmans Stekhoven, 1950
    15. Species Daptonema aquaedulcis (Gagarin, 1987)
    16. Species Daptonema arcospiculum (uncertain > taxon inquirendum)
    17. Species Daptonema arcticus Steiner, 1916
    18. Species Daptonema articulatum Lorenzen, 1977
    19. Species Daptonema australis Allgén, 1951
    20. Species Daptonema bathylaimum Allgén, 1959
    21. Species Daptonema bathylaimus (Allgén, 1929)
    22. Species Daptonema biggi (Gerlach, 1965)
    23. Species Daptonema brevisetosum Thanh & Gagarin, 2009
    24. Species Daptonema buelkiensis
    25. Species Daptonema buetschii
    26. Species Daptonema buetschlii Schuurmans Stekhoven, 1935
    27. Species Daptonema buetschlioides (Chitwood, 1951)
    28. Species Daptonema calcaneum Stekhoven, 1950
    29. Species Daptonema calcaneus Schuurmans Stekhoven, 1950
    30. Species Daptonema calceolatum (De Coninck & Schuurmans Stekhoven, 1933)
    31. Species Daptonema calceolatus De Coninck & Schuurmans Stekhoven, 1933
    32. Species Daptonema circulum (Vitiello, 1971)
    33. Species Daptonema circulus (Vitiello, 1971)
    34. Species Daptonema circumscriptum (Wieser, 1959)
    35. Species Daptonema circumscriptus
    36. Species Daptonema clavicaudatum
    37. Species Daptonema clavicaudatus Gerlach, 1953
    38. Species Daptonema concordiense Pastor de Ward, 1985
    39. Species Daptonema conicum (Filipjev, 1922)
    40. Species Daptonema crassissima (Ditlevsen, 1911)
    41. Species Daptonema curticauda Chesunov, 1980
    42. Species Daptonema curvatum Gagarin & Thu, 2008
    43. Species Daptonema curvatus Gerlach, 1956
    44. Species Daptonema curvispicula Tchesunov & Miljutin, 2006
    45. Species Daptonema curvispiculum (Gerlach, 1953)
    46. Species Daptonema cuspidospiculum Allgén, 1932
    47. Species Daptonema deconincki Sharma, 1985
    48. Species Daptonema dentatum Wieser, 1956
    49. Species Daptonema dentatus Wieser, 1956
    50. Species Daptonema divertens Boucher & Helléouët, 1977
    51. Species Daptonema donsi (Allgén, 1948)
    52. Species Daptonema dubium Bütschli, 1873
    53. Species Daptonema dubius Bütschli, 1873
    54. Species Daptonema durum Gagarin & Thu, 2008
    55. Species Daptonema ecphygmaticum
    56. Species Daptonema ecphygmaticus
    57. Species Daptonema elaboratum Chitwood, 1951
    58. Species Daptonema elaboratus Chitwood, 1951
    59. Species Daptonema elegans (Kreis, 1929)
    60. Species Daptonema elongatum Gagarin & Thu, 2008
    61. Species Daptonema erectum
    62. Species Daptonema erectus (Wieser & Hopper, 1967)
    63. Species Daptonema eximius (Gagarin & Lemzina, 1981)
    64. Species Daptonema exutum Wieser, 1956
    65. Species Daptonema exutus Wieser, 1956
    66. Species Daptonema falax Lorenzen, 1972 accepted as Daptonema fallax (Lorenzen, 1972)
    67. Species Daptonema fallax (Lorenzen, 1972)
    68. Species Daptonema filicaudatus Allgén, 1959
    69. Species Daptonema filispiculum
    70. Species Daptonema fimbriatum Cobb, 1920 accepted as Mesotheristus fimbriatus (Cobb, 1920)
    71. Species Daptonema fimbriatus Cobb, 1920
    72. Species Daptonema fissidens Cobb, 1920
    73. Species Daptonema fistulatum (Wieser & Hopper, 1967)
    74. Species Daptonema fistulatus Wieser & Hopper, 1967
    75. Species Daptonema flagellicauda (Lorenzen, 1973)
    76. Species Daptonema floridanus (Wieser & Hopper, 1967)
    77. Species Daptonema fluviatilis (Paramonov, 1925)
    78. Species Daptonema fortis Gagarin, 1993
    79. Species Daptonema frigidum (uncertain > taxon inquirendum)
    80. Species Daptonema frigidus Cobb, 1914
    81. Species Daptonema furcatum (Juario, 1974)
    82. Species Daptonema furcatus
    83. Species Daptonema gelana Warwick & Platt
    84. Species Daptonema gracillimecaudatus (Allgén, 1946)
    85. Species Daptonema grahami Allgén, 1959
    86. Species Daptonema gritsenkovi (Gagarin & Lemzina, 1981)
    87. Species Daptonema groenlandica
    88. Species Daptonema groenlandicum (Ditlevsen, 1928)
    89. Species Daptonema groenlandicus Ditlevsen, 1928
    90. Species Daptonema gyrophorum Wieser, 1956
    91. Species Daptonema gyrophorus Wieser, 1956
    92. Species Daptonema heterus (Gerlach, 1957)
    93. Species Daptonema hirsutum (Vitiello, 1967)
    94. Species Daptonema hirsutus Vitiello, 1967
    95. Species Daptonema intermedius Chesunov, 1980
    96. Species Daptonema invagiferoum (Platt, 1973)
    97. Species Daptonema invagiferous Platt, 1973
    98. Species Daptonema inversum Alekseyev, 1984
    99. Species Daptonema issykkulensis (Gagarin & Lemzina, 1980)
    100. Species Daptonema karabugasensis Chesunov, 1980
    101. Species Daptonema kornoeense (Allgén, 1929)
    102. Species Daptonema kornoeensis Allgén, 1929
    103. Species Daptonema lata
    104. Species Daptonema latus Cobb, 1894
    105. Species Daptonema laxum Wieser, 1956
    106. Species Daptonema laxus Wieser, 1956
    107. Species Daptonema leptogastrelloides Riemann, 1979
    108. Species Daptonema leviculus
    109. Species Daptonema levis Rieger & Ott, 1971
    110. Species Daptonema limnobia Wu & Liang, 2000
    111. Species Daptonema litorallis
    112. Species Daptonema longicaudatum (Filipjev, 1922)
    113. Species Daptonema longicaudatus
    114. Species Daptonema longissimecaudatum Kreis, 1935
    115. Species Daptonema longissimecaudatus Kreis, 1935
    116. Species Daptonema lopezi Pastor de Ward, 1985
    117. Species Daptonema macrocirculus Allgén, 1959
    118. Species Daptonema maeoticum
    119. Species Daptonema maeoticus (Filipjev, 1922)
    120. Species Daptonema marylandicus (Timm, 1952)
    121. Species Daptonema marylinicus Timm, 1952
    122. Species Daptonema meridianus Cobb, 1914
    123. Species Daptonema metasetosus
    124. Species Daptonema miamiemse
    125. Species Daptonema miamiense (Hopper, 1969)
    126. Species Daptonema miamiensis (Hopper, 1969)
    127. Species Daptonema microspiculum (Gerlach, 1953)
    128. Species Daptonema minuta accepted as Daptonema xyaliforme Wieser & Hopper, 1967
    129. Species Daptonema mirabilis (Stekhoven & De Coninck, 1933)
    130. Species Daptonema modestum Tchesunov, 1990
    131. Species Daptonema nannospiculus Chesunov, 1980
    132. Species Daptonema nanum (Lorenzen, 1972)
    133. Species Daptonema naviculivorus Cobb, 1930
    134. Species Daptonema normandicum (de Man, 1890)
    135. Species Daptonema normandicus de Man, 1890
    136. Species Daptonema norvegicus (Allgén, 1946)
    137. Species Daptonema notoistospiculoides Allgén, 1959
    138. Species Daptonema notosetosus Allgén, 1959
    139. Species Daptonema obesum Gagarin, 2001
    140. Species Daptonema osadchikae Chesunov, 1980
    141. Species Daptonema osadchikhae (Chesunov, 1980)
    142. Species Daptonema ostentator Wieser & Hopper, 1967
    143. Species Daptonema oxycerca (de Man, 1888)
    144. Species Daptonema oxycercus de Man, 1888
    145. Species Daptonema oxyuroides (Stekhoven, 1931)
    146. Species Daptonema papillatus
    147. Species Daptonema parabutschlii Timm, 1961
    148. Species Daptonema paracircumscriptus (Fadeeva & Belogurov, 1987)
    149. Species Daptonema paradonsi (Allgén, 1949)
    150. Species Daptonema paraelaboratum
    151. Species Daptonema paraelaboratus
    152. Species Daptonema paratenuispiculum (Allgén, 1942)
    153. Species Daptonema paratortum (Vitiello, 1971)
    154. Species Daptonema paratortus (Vitiello, 1971)
    155. Species Daptonema paroistospiculoides Allgén, 1959
    156. Species Daptonema planiere Vitiello, 1971
    157. Species Daptonema planieris Vitiello, 1970
    158. Species Daptonema platonovae Galtsova, 1976
    159. Species Daptonema polaris Cobb, 1893
    160. Species Daptonema pratti Murphy & Canaris, 1964
    161. Species Daptonema procerum (Gerlach, 1951)
    162. Species Daptonema procerus (Gerlach, 1951)
    163. Species Daptonema prominens (Vitiello, 1971)
    164. Species Daptonema proprium (Lorenzen, 1972)
    165. Species Daptonema proprius Lorenzen, 1972
    166. Species Daptonema psammoides (Warwick, 1970)
    167. Species Daptonema pseudotortum (Vitiello, 1971)
    168. Species Daptonema pseudotortus (Vitiello, 1971)
    169. Species Daptonema rectangulatum Pastor de Ward, 1985
    170. Species Daptonema resimum
    171. Species Daptonema resimus
    172. Species Daptonema resinus
    173. Species Daptonema riemanni (Platt, 1973) accepted as Chaetonema riemanni Platt, 1973
    174. Species Daptonema rigidum Gagarin, Nguyen Vu Thanh & Nguyen Thi Thu, 2005
    175. Species Daptonema robustus Chesunov, 1980
    176. Species Daptonema romanelloi Pastor de Ward, 1985
    177. Species Daptonema rusticum (Kreis, 1929)
    178. Species Daptonema rusticus Kreis, 1929
    179. Species Daptonema salvum Gagarin, Nguyen Vu Thanh & Nguyen Thi Thu, 2005
    180. Species Daptonema sanctimarteni Timm, 1957
    181. Species Daptonema sentiens Cobb, 1914
    182. Species Daptonema septentrionalis Cobb, 1914
    183. Species Daptonema setifer (Gerlach, 1952)
    184. Species Daptonema setosa (Bütschli, 1874)
    185. Species Daptonema setosum (Bütschli, 1874)
    186. Species Daptonema setosus Bütschli, 1874
    187. Species Daptonema simplex Allgén, 1959
    188. Species Daptonema sinuosus Wieser, 1959
    189. Species Daptonema sphaerolaimoides
    190. Species Daptonema sphaerolaimus (Allgén, 1935)
    191. Species Daptonema spirum (Gerlach, 1959)
    192. Species Daptonema spirus Gerlach, 1959
    193. Species Daptonema stricta (Gerlach, 1956)
    194. Species Daptonema stylosum (Lorenzen, 1973)
    195. Species Daptonema stylosus
    196. Species Daptonema subsetosum Schneider, 1943
    197. Species Daptonema svalbardense (Gerlach, 1965)
    198. Species Daptonema svalbardensis
    199. Species Daptonema tenuispiculum (Ditlevsen, 1918)
    200. Species Daptonema timmi Timm, 1961
    201. Species Daptonema timoshkini (Gagarin, 2001)
    202. Species Daptonema tortum Wieser & Hopper, 1967
    203. Species Daptonema tortuosum Timm, 1961
    204. Species Daptonema tortus Wieser & Hopper, 1967
    205. Species Daptonema trabeculosum (Schneider, 1906)
    206. Species Daptonema trabeculosus Schneider, 1906
    207. Species Daptonema trecuspidatum
    208. Species Daptonema trecuspidatus
    209. Species Daptonema trichinus (Gerlach, 1956)
    210. Species Daptonema trichospiculum (Allgén, 1933)
    211. Species Daptonema trichuroides
    212. Species Daptonema uncinatus Wieser, 1959
    213. Species Daptonema variasetosus (Pavljuk, 1984)
    214. Species Daptonema vicinum (Riemann, 1966)
    215. Species Daptonema vicinus
    216. Species Daptonema voscresenskii Tschesunov, 1990
    217. Species Daptonema voskresenskii Tchesunov, 1990
    218. Species Daptonema williamsi Vincx & Coomans, 1983
    219. Species Daptonema xyaliforme Wieser & Hopper, 1967
    220. Species Daptonema xyaliformis Timm, 1961
  17. Genus Deraionema Leduc, 2023
  18. Genus Echinotheristus Thun & Riemann, 1967
    1. Species Echinotheristus cimbricus Thun & Riemann, 1967
    2. Species Echinotheristus teutonicus Thun & Riemann, 1967
  19. Genus Elzalia Gerlach, 1957
    1. Species Elzalia federici Castillo-Fernández & Lambshead, 1990
    2. Species Elzalia floresi Gerlach, 1957
    3. Species Elzalia gerlachi Zhang & Zhang, 2006
    4. Species Elzalia kimae Castillo-Fernández & Lambshead, 1990
    5. Species Elzalia mediterranea Vitiello, 1971
    6. Species Elzalia poli Castillo-Fernández & Lambshead, 1990
    7. Species Elzalia speculifer Timm, 1961
    8. Species Elzalia striatitenuis Zhang & Zhang, 2006
    9. Species Elzalia tenuis Allgén, 1959
  20. Genus Enchonema Bussau, 1993
    1. Species Enchonema umbrosum Bussau, 1993
  21. Genus Filipjeva Ditlevsen, 1928
    1. Species Filipjeva arctica Ditlevsen, 1928
    2. Species Filipjeva crucis Blome & Schrage, 1985
    3. Species Filipjeva filipjevi Tchesunov, 1988
    4. Species Filipjeva mediterranea Schuurmans Stekhoven, 1950
    5. Species Filipjeva meridionalis Kreis, 1932
    6. Species Filipjeva parameridionalis Vitiello, 1970
    7. Species Filipjeva teratospicula Tchesunov, 1988
  22. Genus Gnomoxyala Lorenzen, 1977
    1. Species Gnomoxyala spina Lorenzen, 1977
  23. Genus Gonionchus Cobb, 1920
    1. Species Gonionchus africanus Vincx & Furstenberg, 1988
    2. Species Gonionchus alastairi
    3. Species Gonionchus arabica Nasira & Turpeenniemi, 2003
    4. Species Gonionchus australis
    5. Species Gonionchus cumbraensis Benwell, 1981
    6. Species Gonionchus ecuadoriensis Calles, 2006
    7. Species Gonionchus heipi Vincx, 1986
    8. Species Gonionchus inaequalis Warwick & Platt, 1973
    9. Species Gonionchus intermedius Jensen, 1986
    10. Species Gonionchus latentis Fadeeva, 1984
    11. Species Gonionchus longicaudatus (Ward, 1972)
    12. Species Gonionchus paravillosus Blome, 1982
    13. Species Gonionchus sensibilis Lorenzen, 1977
    14. Species Gonionchus villosus Cobb, 1920
  24. Genus Guitartia Armenteros, 2010
    1. Species Guitartia tridentata Armenteros, Vincx & Decraemer, 2010
  25. Genus Gullanema Nicholas & Stewart, 1995
    1. Species Gullanema fragilis Nicholas & Stewart, 1995
  26. Genus Hoffmaenneria Schneider, 1940 accepted as Hofmaenneria Gerlach & Meyl, 1957 (Type species Cylindrolaimus brachystoma Hofmanner in Hofmanner and Menzel 1914, designated by Gerlach and Meyl 1957 p 164. Hofmaenneria W. Schneider 1940 p 94 is invalid because no type species has been designated.)
    1. Species Hoffmaenneria brachystoma Hofmänner & Menzel, 1914
    2. Species Hoffmaenneria hazensis Mulvey, 1969
    3. Species Hoffmaenneria niddensis (Skwarra, 1921)
  27. Genus Hofmaenneria Gerlach & Meyl, 1957
    1. Species Hofmaenneria brachystoma Hofmänner, 1940
    2. Species Hofmaenneria elongatus Gagarin, 1987
    3. Species Hofmaenneria gratiosa Alekseev, 1983
    4. Species Hofmaenneria hazanensis Mulvey, 1969
    5. Species Hofmaenneria hazenensis Mulvey, 1969
    6. Species Hofmaenneria keoladeoensis Khan, Hussain, Sultana & Tahseen, 2005
    7. Species Hofmaenneria longicaudata Gagarin, 1999
    8. Species Hofmaenneria niddensis (Skwarra, 1921)
    9. Species Hofmaenneria niddensis Schneider, 1940
    10. Species Hofmaenneria optata Alekseev, 1983
  28. Genus Lamyronema Leduc, 2015
  29. Genus Leptogastrella Cobb, 1920 accepted as Paramonohystera Steiner, 1916
    1. Species Leptogastrella elliptica (Filipjev, 1918)
    2. Species Leptogastrella halerba (Fadeeva & Belogurov, 1987)
    3. Species Leptogastrella paranormandica (Micoletzky, 1922)
    4. Species Leptogastrella pellucida Cobb, 1920
    5. Species Leptogastrella stricta Gerlach, 1956 accepted as Daptonema stricta (Gerlach, 1956)
    6. Species Leptogastrella tschislenkoi (Platonova, 1971)
  30. Genus Linhystera Juario, 1974
    1. Species Linhystera longa Pastor de Ward, 1985
    2. Species Linhystera problematica Juario, 1974
  31. Genus Manganonema Bussau, 1993
    1. Species Manganonema antarctica Fonseca, Decraemer & Vanreusel, 2006
    2. Species Manganonema bussauensis Fonseca, Decraemer & Vanreusel, 2006
    3. Species Manganonema media Fonseca, Decraemer & Vanreusel, 2006
    4. Species Manganonema microcephalum Bussau, 1993
    5. Species Manganonema pitilica Fonseca, Decraemer & Vanreusel, 2006
    6. Species Manganonema robustus Fonseca, Decraemer & Vanreusel, 2006
  32. Genus Marisalbinema Tchesunov, 1990
    1. Species Marisalbinema galtsovae Tchesunov, 1990
  33. Genus Megalamphis (uncertain, unassessed)
    1. Species Megalamphis sphaerolaimoides Timm, 1961
  34. Genus Metadesmolaimus Schuurmans Stekhoven, 1935
    1. Species Metadesmolaimus aduncus Lorenzen, 1972
    2. Species Metadesmolaimus aversivulva Gerlach, 1953
    3. Species Metadesmolaimus canicula Wieser & Hopper, 1967 accepted as Metadesmolaimus caniculus Wieser & Hopper, 1967
    4. Species Metadesmolaimus caniculus Wieser & Hopper, 1967
    5. Species Metadesmolaimus coronatus Schuurmans Stekhoven, 1950
    6. Species Metadesmolaimus gaelicus Platt, 1983
    7. Species Metadesmolaimus galeatus (Wieser & Hopper, 1967)
    8. Species Metadesmolaimus gelana (Warwick & Platt, 1973)
    9. Species Metadesmolaimus hamatus (Gerlach, 1956)
    10. Species Metadesmolaimus heteroclitus Lorenzen, 1972
    11. Species Metadesmolaimus labiosetosus Schuurmans Stekhoven, 1935
    12. Species Metadesmolaimus pandus Lorenzen, 1972
    13. Species Metadesmolaimus psammophilus Tchesunov, 1990
    14. Species Metadesmolaimus psamprophilus Tchesunov, 1990
    15. Species Metadesmolaimus similis Tchesunov, 1990
    16. Species Metadesmolaimus tersus (Gerlach, 1956)
    17. Species Metadesmolaimus varians Lorenzen, 1972
  35. Genus Mongolotheristus Tsalolikhin, 1985 accepted as Daptonema Cobb, 1920
    1. Species Mongolotheristus altaicus Tsalolikhin, 1985 accepted as Daptonema altaicus (Tsalolikhin, 1985)
    2. Species Mongolotheristus timoshkini Gagarin, 2001 accepted as Daptonema timoshkini (Gagarin, 2001)
  36. Genus Omicronema Cobb, 1920
    1. Species Omicronema australis Stewart & Nicholas, 1994
    2. Species Omicronema clavulatum Gerlach, 1957
    3. Species Omicronema coronalata
    4. Species Omicronema litorium Cobb, 1920
    5. Species Omicronema nana
    6. Species Omicronema nidrosiense Allgén, 1933
    7. Species Omicronema orientalis Gagarin & Thanh, 2009
    8. Species Omicronema truncatum Schuurmans Stekhoven, 1950
  37. Genus Panzancia accepted as Theristus Bastian, 1865
  38. Genus Paragonionchus Blome, 2002
    1. Species Paragonionchus sclerolabiatus Blome, 2002
  39. Genus Paramonhystera Steiner, 1916
    1. Species Paramonhystera albigensis Riemann, 1966
    2. Species Paramonhystera biforma Wieser, 1956
    3. Species Paramonhystera breviseta (Juario, 1974)
    4. Species Paramonhystera buetschlii Bresslau & Schuurmans Stekhoven in Schuurmans Stekhoven, 1935
    5. Species Paramonhystera concinna Lorenzen, 1977
    6. Species Paramonhystera elliptica Filipjev, 1918
    7. Species Paramonhystera geraerti Chen & Vincx, 2000
    8. Species Paramonhystera levicula Lorenzen, 1972
    9. Species Paramonhystera levis
    10. Species Paramonhystera longicaudata Timm, 1963
    11. Species Paramonhystera megacephala Wieser, 1956
    12. Species Paramonhystera micramphis Schuurmans Stekhoven, 1950
    13. Species Paramonhystera mutila Lorenzen, 1973 accepted as Stylotheristus mutilus (Lorenzen, 1973)
    14. Species Paramonhystera paranormandica Micoletzky, 1922
    15. Species Paramonhystera pellucida Cobb, 1920
    16. Species Paramonhystera pillosa
    17. Species Paramonhystera pilosa Boucher, 1971
    18. Species Paramonhystera proteus Wieser, 1956
    19. Species Paramonhystera riemanni Platt, 1973
    20. Species Paramonhystera stricta
    21. Species Paramonhystera tschislenkoi Platonova, 1971
    22. Species Paramonhystera wieseri Ott, 1977
    23. Species Paramonhystera zizichi Pastor de Ward, 1985 accepted as Paramonohystera zizichi (Pastor de Ward, 1985)
  40. Genus Paramonohystera Steiner, 1916
    1. Species Paramonohystera albigensis (Riemann, 1966)
    2. Species Paramonohystera biforma Wieser, 1956
    3. Species Paramonohystera breviseta Juario, 1974 accepted as Retrotheristus breviseta (Juario, 1974)
    4. Species Paramonohystera butschlii (Bresslau & Stekhoven in Stekhoven, 1935)
    5. Species Paramonohystera canicula Wieser & Hopper, 1967
    6. Species Paramonohystera concinna Lorenzen, 1977
    7. Species Paramonohystera curvatus Gerlach, 1956
    8. Species Paramonohystera elliptica (Filipjev, 1918)
    9. Species Paramonohystera filamentosa Tschesunov, 1990
    10. Species Paramonohystera geraerti Chen & Vincx, 2000
    11. Species Paramonohystera halerba Fadeeva & Belogurov, 1987 accepted as Leptogastrella halerba (Fadeeva & Belogurov, 1987)
    12. Species Paramonohystera levicula (Lorenzen, 1973)
    13. Species Paramonohystera longicaudata Timm, 1963
    14. Species Paramonohystera megacephala (Steiner, 1916)
    15. Species Paramonohystera micramphis Schuurmans Stekhoven, 1950
    16. Species Paramonohystera mystacoderma Wieser, 1960
    17. Species Paramonohystera parabutschlii (Timm, 1961)
    18. Species Paramonohystera paranormandica (Micoletzky, 1922)
    19. Species Paramonohystera pellucida (Cobb, 1920)
    20. Species Paramonohystera proteus Wieser, 1956
    21. Species Paramonohystera riemanni (Platt, 1973)
    22. Species Paramonohystera setosa Filipjev, 1918
    23. Species Paramonohystera stricta (Gerlach, 1956)
    24. Species Paramonohystera tschislenkoi Platonova, 1971
    25. Species Paramonohystera zizichi (Pastor de Ward, 1985)
  41. Genus Paramphimonhystrella Huang & Zhang, 2006
    1. Species Paramphimonhystrella elegans Huang & Zhang, 2006
    2. Species Paramphimonhystrella minor Huang & Zhang, 2006
    3. Species Paramphimonhystrella sinica Huang & Zhang, 2006
  42. Genus Parelzalia Tchesunov, 1990
    1. Species Parelzalia obscuramphis Tchesunov, 1990
  43. Genus Penzancia de Man, 1889 accepted as Theristus Bastian, 1865
    1. Species Penzancia acribus (Gerlach, 1956)
    2. Species Penzancia aculeatus (Schulz, 1935)
    3. Species Penzancia agilis (de Man, 1880)
    4. Species Penzancia ambronensis (Schulz, 1936)
    5. Species Penzancia anoxybioticus (Jensen, 1995)
    6. Species Penzancia athesinus (Andrássy, 1962)
    7. Species Penzancia biarcospiculoides (Blome, 1982)
    8. Species Penzancia biarcospiculum (Timm, 1952)
    9. Species Penzancia bipunctatus Schneider, 1906
    10. Species Penzancia blandicor (Rachor, 1971)
    11. Species Penzancia borosi (Andrássy, 1958)
    12. Species Penzancia bujumbura Tsalolichin in Tsalolikhin, 1989
    13. Species Penzancia calx (Wieser & Hopper, 1967)
    14. Species Penzancia darkovi Tsalolikhin, 1993
    15. Species Penzancia euxina Filipjev, 1918 accepted as Valvaelaimus euxinus (Filipjev, 1918)
    16. Species Penzancia flevensis (Schuurmans-Stekhoven, 1935)
    17. Species Penzancia helveticus Steiner, 1914
    18. Species Penzancia inermis (Gerlach, 1953)
    19. Species Penzancia kaszabi (Andrássy, 1977)
    20. Species Penzancia lineatus (Gerlach, 1965)
    21. Species Penzancia lingi (Hoeppli & Chu, 1932)
    22. Species Penzancia longisetifer (Kito & Aryuthaka, 1998)
    23. Species Penzancia longisetosus (Stekhoven & de Coninck, 1933)
    24. Species Penzancia longispicula Platonova, 1971
    25. Species Penzancia lorenzeni (Pastor-de Ward, 1985)
    26. Species Penzancia macroflevensis (Gerlach, 1954)
    27. Species Penzancia maior (Gerlach, 1956)
    28. Species Penzancia marinae (Chesunov, 1981)
    29. Species Penzancia megalaimoides (Wieser, 1956)
    30. Species Penzancia megalaimus Stewart, 1914
    31. Species Penzancia metaflevensis (Gerlach, 1955)
    32. Species Penzancia meyli (Riemann, 1966)
    33. Species Penzancia neglectus Cobb, 1930
    34. Species Penzancia norwegicus Allgén, 1933
    35. Species Penzancia oistospiculum (Allgén, 1932)
    36. Species Penzancia parambronensis (Timm, 1952)
    37. Species Penzancia parasiticus Penso, 1938
    38. Species Penzancia paravelox Allgén, 1934
    39. Species Penzancia parvulus (Timm, 1952)
    40. Species Penzancia pellucidus (Allgén, 1939)
    41. Species Penzancia polychaetophilus (Hopper, 1966)
    42. Species Penzancia pratti (Murphy & Canaris, 1964)
    43. Species Penzancia pyronasi (Gerlach, 1965)
    44. Species Penzancia quadripapillatus (Decraemer & Coomans, 1978)
    45. Species Penzancia ruffoi (Andrássy, 1959)
    46. Species Penzancia scanicus (Allgén, 1949)
    47. Species Penzancia stranus (Gerlach, 1957)
    48. Species Penzancia terricola Andrássy, 1985
    49. Species Penzancia tessae (Heyns & Coomans, 1989)
    50. Species Penzancia velox (Bastian, 1865)
    51. Species Penzancia vesentiniae (Andrássy, 1962)
    52. Species Penzancia wegelinae (Andrássy, 1962)
  44. Genus Penzencia De Man
  45. Genus Promonhystera Wieser, 1956
    1. Species Promonhystera albigensis Riemann, 1966 accepted as Daptonema albigensis (Riemann, 1966)
    2. Species Promonhystera faber Wieser, 1956
    3. Species Promonhystera tricuspidata Wieser, 1956
  46. Genus Prorhynchonema Gourbault, 1982
    1. Species Prorhynchonema gourbaultae Nicholas & Stewart, 1995
    2. Species Prorhynchonema warwicki Gourbault, 1982
  47. Genus Pseudechinotheristus Blome, 2002
    1. Species Pseudechinotheristus nudus Blome, 2002
  48. Genus Pseudosteineria Wieser, 1956
    1. Species Pseudosteineria anteferens Wieser, 1956
    2. Species Pseudosteineria anticipans Wieser, 1956
    3. Species Pseudosteineria coronata (Gerlach, 1955)
    4. Species Pseudosteineria horrida (Steiner, 1916)
    5. Species Pseudosteineria inaequispiculata Platonova, 1971
    6. Species Pseudosteineria metacoronata
    7. Species Pseudosteineria paramirabilis (Gerlach, 1955)
    8. Species Pseudosteineria pavo (Gerlach, 1957)
    9. Species Pseudosteineria pulchra (Mawson, 1957)
    10. Species Pseudosteineria sagittispiculata Fadeyeva & Fadeeva, 1986
    11. Species Pseudosteineria scopae
    12. Species Pseudosteineria ventropapillata Tchesunov, 2000
  49. Genus Pulchranemella N. Cobb in M. Cobb, 1933 (uncertain > nomen dubium)
    1. Species Pulchranemella setosa Cobb, 1933
  50. Genus Retrotheristus Lorenzen, 1977
    1. Species Retrotheristus breviseta (Juario, 1974)
    2. Species Retrotheristus breviseta Lorenzen, 1977
  51. Genus Rhynchonema Cobb, 1920
    1. Species Rhynchonema amakusanum Aryuthaka, 1987
    2. Species Rhynchonema ambianorum Boucher, 1974
    3. Species Rhynchonema brevituba Gerlach, 1953
    4. Species Rhynchonema ceramotos Boucher, 1974
    5. Species Rhynchonema chiloense Lorenzen, 1975
    6. Species Rhynchonema cincta
    7. Species Rhynchonema cinctum Cobb, 1920
    8. Species Rhynchonema collare Nicholas & Stewart, 1995
    9. Species Rhynchonema deconincki Vitiello, 1967
    10. Species Rhynchonema dispar Gourbault, 1982
    11. Species Rhynchonema falcifera Boucher, 1974
    12. Species Rhynchonema falciferum Boucher, 1974
    13. Species Rhynchonema fossum Lorenzen, 1975
    14. Species Rhynchonema gerlachi Vitiello, 1967
    15. Species Rhynchonema hirsutum Hopper, 1961
    16. Species Rhynchonema impar Lorenzen, 1975
    17. Species Rhynchonema kikuchii Aryuthaka, 1987
    18. Species Rhynchonema longituba Gerlach, 1953
    19. Species Rhynchonema lyngei (Allgén, 1940)
    20. Species Rhynchonema megamphida Boucher, 1974
    21. Species Rhynchonema megaphida Boucher, 1974
    22. Species Rhynchonema moorea Boucher, 1974
    23. Species Rhynchonema ornatum Lorenzen, 1975
    24. Species Rhynchonema quemer Boucher, 1974
    25. Species Rhynchonema ronaldi Calles, 2006
    26. Species Rhynchonema scutatum Lorenzen, 1972
    27. Species Rhynchonema semiserratum Lorenzen, 1975
    28. Species Rhynchonema separatum Lorenzen, 1975
    29. Species Rhynchonema sieverti Gourbault, 1982
    30. Species Rhynchonema subsetosum
    31. Species Rhynchonema tomakinense Nicholas & Stewart, 1995
    32. Species Rhynchonema tomakinese Nicholas & Stewart, 1995
    33. Species Rhynchonema tremendum Lorenzen, 1975
    34. Species Rhynchonema wieseri Wieser, 1956
    35. Species Rhynchonema xiamenensis Huang & Liu, 2002
  52. Genus Robustnema Nicholas, 1996
    1. Species Robustnema fosteri Nicholas, 1996
  53. Genus Sacrimarinema Shoshin, 2001
    1. Species Sacrimarinema allae Shoshin, 2001
    2. Species Sacrimarinema ljajiae Shoshin, 2001
    3. Species Sacrimarinema tatushae Shoshin, 2001
  54. Genus Scaptrella Cobb, 1917
    1. Species Scaptrella brevicaudata Gerlach, 1953
    2. Species Scaptrella cincta Cobb, 1917
    3. Species Scaptrella tenuicaudata Gerlach, 1956
    4. Species Scaptrella tenuicaudatus Gerlach, 1956
  55. Genus Sphaerotheristus Timm, 1968
    1. Species Sphaerotheristus bengalensis Timm, 1968
    2. Species Sphaerotheristus macrostoma Timm, 1968
    3. Species Sphaerotheristus parvus Gagarin & Thanh, 2006
    4. Species Sphaerotheristus pseudodentalus Timm, 1968
    5. Species Sphaerotheristus pseudodentatus Timm, 1968
    6. Species Sphaerotheristus sonadiae Timm, 1968
    7. Species Sphaerotheristus supoti Timm, 1968
    8. Species Sphaerotheristus supplementatus Gagarin & Thanh, 2008
  56. Genus Spiramphinema Wieser, 1956
    1. Species Spiramphinema convolutum Wieser, 1956
    2. Species Spiramphinema longiseta Wieser, 1956
    3. Species Spiramphinema microcephalon (Schuurmans Stekhoven, 1942)
  57. Genus Steineria Micoletzky, 1922
    1. Species Steineria aegyptica Andrássy, 1967
    2. Species Steineria ampullacea Wieser & Hopper, 1967
    3. Species Steineria brevisetosa Timm, 1957
    4. Species Steineria chiliensis Murphy, 1966
    5. Species Steineria cobbi Wieser, 1956
    6. Species Steineria copiosa Fadeeva, 1991 accepted as Viscosia copiosa (Fadeeva, 1991)
    7. Species Steineria ericia Gerlach, 1956
    8. Species Steineria gerlachi Wieser, 1959
    9. Species Steineria longicaudata Vitiello, 1971
    10. Species Steineria marcorum Gerlach, 1956
    11. Species Steineria megalaima Ditlevsen, 1928 accepted as Viscosia megalaima (Ditlevsen, 1928)
    12. Species Steineria mirabilis Schuurmans Stekhoven & De Coninck, 1933 accepted as Trichotheristus mirabilis (Schuurmans Stekhoven & De Coninck, 1933)
    13. Species Steineria paramirabilis Gerlach, 1955 accepted as Pseudosteineria paramirabilis (Gerlach, 1955)
    14. Species Steineria parapolychaeta Gerlach, 1953
    15. Species Steineria pavo Gerlach, 1957
    16. Species Steineria pectinata Wieser, 1956
    17. Species Steineria phimifera Wieser, 1959
    18. Species Steineria pilosa Cobb, 1914
    19. Species Steineria polychaeta Steiner, 1915
    20. Species Steineria polychaetoides Gerlach, 1951
    21. Species Steineria pontica Groza-Rojancovski, 1972
    22. Species Steineria pulchra Mawson, 1957
    23. Species Steineria punctata Gerlach, 1955
    24. Species Steineria scopae Gerlach, 1956 accepted as Pseudosteineria scopae
    25. Species Steineria setosissima (Cobb)
    26. Species Steineria setossissima accepted as Steineria setosissima (Cobb)
    27. Species Steineria simplex Timm, 1963
    28. Species Steineria sterrei Ott, 1977
    29. Species Steineria sterreri Ott, 1977
    30. Species Steineria tripartita Gerlach, 1957
  58. Genus Stylotheristus Lorenzen, 1977
    1. Species Stylotheristus mutila Lorenzen, 1973
    2. Species Stylotheristus mutilus (Lorenzen, 1973) accepted as Stylotheristus mutila Lorenzen, 1973
  59. Genus Theristus Bastian, 1865
    1. Species Theristus acanthospiculum Allgén, 1959 accepted as Daptonema acanthospiculum Allgén, 1959
    2. Species Theristus acer Bastian, 1865
    3. Species Theristus acidus Vitiello, 1971 accepted as Daptonema acidus Vitiello, 1970
    4. Species Theristus acribus Gerlach, 1956
    5. Species Theristus acriformis (de Man, 1922)
    6. Species Theristus acrilabiatus Kreis, 1928
    7. Species Theristus acrilabiatus De Coninck & Stekhoven, 1933 accepted as Daptonema acrilabiatus De Coninck & Schuurmans Stekhoven, 1933
    8. Species Theristus acrolabiatus De Coninck & Schuurmans Stekhoven
    9. Species Theristus aculeatus Schulz, 1935
    10. Species Theristus aegypticus Gerlach, 1964 accepted as Daptonema aegypticus Gerlach, 1964
    11. Species Theristus agilis de Man, 1881
    12. Species Theristus altenbachi Hoste E.
    13. Species Theristus alternus Wieser, 1956 accepted as Cylindrotheristus alternus (Wieser, 1956)
    14. Species Theristus ambronensis Schulz, 1937
    15. Species Theristus angulatus Stekhoven, 1950 accepted as Daptonema angulatus Schuurmans Stekhoven, 1950
    16. Species Theristus anisocirculus Blome, 1982
    17. Species Theristus anisotrichus Lorenzen, 1972
    18. Species Theristus anoxybioticus Jensen, 1995 accepted as Penzancia anoxybioticus (Jensen, 1995)
    19. Species Theristus anteferens Wieser, 1956 accepted as Pseudosteineria anteferens Wieser, 1956
    20. Species Theristus anticipans Wieser, 1956 accepted as Pseudosteineria anticipans Wieser, 1956
    21. Species Theristus arcospiculum Allgén, 1947 accepted as Daptonema arcospiculum
    22. Species Theristus arcticus
    23. Species Theristus asymetricus
    24. Species Theristus athesinus Andrássy, 1962
    25. Species Theristus australis
    26. Species Theristus balticus Lorenzen, 1973
    27. Species Theristus bastiani Gerlach & Riemann, 1973
    28. Species Theristus bathylaimoides Allgén, 1959 (uncertain > taxon inquirendum)
    29. Species Theristus bathylaimus Allgén, 1959
    30. Species Theristus biarcospiculoides Blome, 1982 accepted as Penzancia biarcospiculoides (Blome, 1982)
    31. Species Theristus biarcospiculum Timm, 1954
    32. Species Theristus bidontolaimus Allgén, 1959 (uncertain > taxon inquirendum)
    33. Species Theristus biggi Gerlach, 1965 accepted as Daptonema biggi (Gerlach, 1965)
    34. Species Theristus bipunctatus (Schneider, 1906)
    35. Species Theristus blandicor Rachor, 1971
    36. Species Theristus borosi Andrássy, 1958
    37. Species Theristus brachysetosus Allgén, 1959
    38. Species Theristus brevicollis Cobb, 1894 (uncertain > taxon inquirendum)
    39. Species Theristus brevisetosus Alekseev in Alexeev, 1992
    40. Species Theristus buetschlii Bresslau & Schuurmans Stekhoven in Schuurmans Stekhoven, 1935
    41. Species Theristus buetschlioides Chitwood, 1951
    42. Species Theristus calcaneus Stekhoven, 1950 accepted as Daptonema calcaneum Stekhoven, 1950
    43. Species Theristus calceolatus De Coninck & Stekhoven, 1933 accepted as Daptonema calceolatus De Coninck & Schuurmans Stekhoven, 1933
    44. Species Theristus calx Wieser & Hopper, 1967
    45. Species Theristus camelopardalis
    46. Species Theristus caudasaliens Adams & Tyler, 1980
    47. Species Theristus chitinolaimus (Allgén, 1932)
    48. Species Theristus circulus Vitiello, 1971 accepted as Daptonema circulus (Vitiello, 1971)
    49. Species Theristus circumscriptus Wieser, 1959 accepted as Mesotheristus circumscriptus (Wieser, 1959)
    50. Species Theristus clavicaudatus Gerlach, 1953 accepted as Spirotheristus clavicaudatus (Gerlach, 1953)
    51. Species Theristus complexus Jayasree & Warwick, 1977
    52. Species Theristus conicaudatus Allgén, 1959
    53. Species Theristus copulatus Jensen, 1986
    54. Species Theristus coronatus Gerlach, 1955 accepted as Pseudosteineria coronata (Gerlach, 1955)
    55. Species Theristus curvatus Gerlach, 1956 accepted as Daptonema curvatus Gerlach, 1956
    56. Species Theristus curvispiculum Gerlach, 1953 accepted as Daptonema curvispiculum (Gerlach, 1953)
    57. Species Theristus dentatus Wieser, 1956 accepted as Daptonema dentatum Wieser, 1956
    58. Species Theristus denticulatus Warwick, 1970
    59. Species Theristus discolensis Bussau, 1993
    60. Species Theristus diversispiculum Gerlach, 1953
    61. Species Theristus donsi Allgén, 1950 accepted as Daptonema donsi (Allgén, 1948)
    62. Species Theristus ecphygmaticus Wieser, 1959 accepted as Daptonema ecphygmaticus
    63. Species Theristus elaboratus Chitwood, 1951 accepted as Daptonema elaboratus Chitwood, 1951
    64. Species Theristus elegans Kries, 1929 accepted as Pseudotheristus elegans (Kries, 1929)
    65. Species Theristus ensifer Gerlach, 1951
    66. Species Theristus erectus Wieser & Hopper, 1967 accepted as Mesotheristus erectus (Wieser & Hopper, 1967)
    67. Species Theristus exutus Wieser, 1956 accepted as Daptonema exutum Wieser, 1956
    68. Species Theristus falklandiae Allgén, 1959 (uncertain > taxon inquirendum)
    69. Species Theristus fallax Lorenzen, 1972 accepted as Daptonema fallax (Lorenzen, 1972)
    70. Species Theristus filicaudatus Allgén, 1959
    71. Species Theristus filispiculum (Allgén, 1932)
    72. Species Theristus fimbriatoides Chitwood & Murphy, 1964 accepted as Wieserius fimbriatoides (Chitwood & Murphy, 1964)
    73. Species Theristus fistulatus Wieser & Hopper, 1967 accepted as Cylindrotheristus fistulatus Wieser & Hopper, 1967
    74. Species Theristus flevensis Schuurmans Stekhoven, 1935
    75. Species Theristus floridanus Wieser & Hopper, 1967 accepted as Trichotheristus floridanus Wieser & Hopper, 1967
    76. Species Theristus fluviatilis Paramonov, 1925 accepted as Daptonema fluviatilis (Paramonov, 1925)
    77. Species Theristus franzbergeri Schiemer, 1984
    78. Species Theristus galeatus Wieser & Hopper, 1967 accepted as Trichotheristus galeatus Wieser & Hopper, 1967
    79. Species Theristus gerlachi Wieser, 1956 accepted as Theristus bastiani Gerlach & Riemann, 1973
    80. Species Theristus gerlachi Meyl, 1955 accepted as Daptonema setosus Bütschli, 1874
    81. Species Theristus gracilis (de Man, 1876)
    82. Species Theristus gracillimecaudatus Allgén, 1946 accepted as Daptonema gracillimecaudatus (Allgén, 1946)
    83. Species Theristus grahami Allgén, 1959
    84. Species Theristus gronlandicus Ditlevsen, 1928
    85. Species Theristus gyrophorus Wieser, 1956 accepted as Daptonema gyrophorum Wieser, 1956
    86. Species Theristus hamatus Gerlach, 1956 accepted as Metadesmolaimus hamatus (Gerlach, 1956)
    87. Species Theristus helviticus Steiner, 1914
    88. Species Theristus heteroscanicus Wieser in Brink, 1956 accepted as Penzancia scanicus (Allgén, 1949)
    89. Species Theristus heterospiculoides Gerlach, 1953
    90. Species Theristus heterospiculum (Allgén, 1932)
    91. Species Theristus heterus Gerlach, 1957 accepted as Daptonema heterus (Gerlach, 1957)
    92. Species Theristus hirsutus Vitiello, 1967 accepted as Daptonema hirsutus Vitiello, 1967
    93. Species Theristus hirtus Gerlach, 1951 accepted as Daptonema setosus Bütschli, 1874
    94. Species Theristus horridus Steiner, 1916
    95. Species Theristus horridus Of Authors accepted as Pseudosteineria horrida (Steiner, 1916)
    96. Species Theristus inaequispiculata Platonova, 1971 accepted as Pseudosteineria inaequispiculata Platonova, 1971
    97. Species Theristus inermis Gerlach, 1953
    98. Species Theristus interstitialis Warwick, 1970
    99. Species Theristus izhoricus Filipjev, 1929 accepted as Daptonema setosus Bütschli, 1874
    100. Species Theristus kaszabi Andrássy, 1977 accepted as Penzancia kaszabi (Andrássy, 1977)
    101. Species Theristus latissimus Filipjev, 1922
    102. Species Theristus laxus Wieser, 1956 accepted as Daptonema laxum Wieser, 1956
    103. Species Theristus leptosoma Allgén, 1950
    104. Species Theristus leviculus Lorenzen, 1973 accepted as Paramonohystera levicula (Lorenzen, 1973)
    105. Species Theristus leviculus Lorenzen accepted as Daptonema leviculus
    106. Species Theristus levis Rieger & Ott, 1971 accepted as Daptonema levis Rieger & Ott, 1971
    107. Species Theristus lineatus Gerlach, 1965
    108. Species Theristus lingi Andrássy, 1960
    109. Species Theristus littoralis Filipjev, 1922
    110. Species Theristus longicaudatus Filipjev
    111. Species Theristus longicaudatusviviparus Allgén, 1952
    112. Species Theristus longicollis Blome, 1982
    113. Species Theristus longisetifer Kito & Aryuthaka, 1998 accepted as Penzancia longisetifer (Kito & Aryuthaka, 1998)
    114. Species Theristus longisetosus (De Coninck & Schuurmans Stekhoven, 1933)
    115. Species Theristus longispicula
    116. Species Theristus longissimecauda Lorenzen, 1973
    117. Species Theristus longissimecaudatus Kreis, 1935
    118. Species Theristus longus Platt, 1973
    119. Species Theristus lorenzeni Pastor de Ward, 1985 accepted as Penzancia lorenzeni (Pastor-de Ward, 1985)
    120. Species Theristus macer Lorenzen, 1973
    121. Species Theristus macquariensis (Allgén, 1929)
    122. Species Theristus macrocirculus Allgén, 1959
    123. Species Theristus macroflevensis Gerlach, 1954
    124. Species Theristus macropapillatus Allgén, 1959 (uncertain > taxon inquirendum)
    125. Species Theristus maeoticus Filipjev, 1922
    126. Species Theristus maior Gerlach, 1956
    127. Species Theristus manicatus Wieser, 1956
    128. Species Theristus marinae Chesunov, 1981 accepted as Penzancia marinae (Chesunov, 1981)
    129. Species Theristus marylandicus Timm, 1952 accepted as Cylindrotheristus marylandicus (Timm, 1952)
    130. Species Theristus maspapillatus Cobb, 1890 (uncertain > taxon inquirendum)
    131. Species Theristus megalaimoides Wieser, 1956
    132. Species Theristus megalaimus (uncertain > taxon inquirendum)
    133. Species Theristus melnikovi Tchesunov, 1986
    134. Species Theristus meridianus Cobb, 1914 (uncertain > taxon inquirendum)
    135. Species Theristus metacoronatus Wieser, 1959 accepted as Pseudosteineria coronata (Gerlach, 1955)
    136. Species Theristus metaflavensis Gerlach, 1955
    137. Species Theristus metaflevensis Gerlach, 1955
    138. Species Theristus metanorvegicus Wieser, 1956 accepted as Daptonema norvegicus (Allgén, 1946)
    139. Species Theristus meyli Riemann, 1966
    140. Species Theristus microspiculum Gerlach, 1953 accepted as Daptonema microspiculum (Gerlach, 1953)
    141. Species Theristus mirabilis De Coninck & Stekhoven, 1933 accepted as Trichotheristus mirabilis (Schuurmans Stekhoven & De Coninck, 1933)
    142. Species Theristus modicus Wieser, 1956
    143. Species Theristus monstrosus Gerlach, 1954
    144. Species Theristus nanus Lorenzen, 1972 accepted as Daptonema nanum (Lorenzen, 1972)
    145. Species Theristus neglectus (uncertain > taxon inquirendum)
    146. Species Theristus nidrosiensis (uncertain > taxon inquirendum)
    147. Species Theristus normandicus (De Man, 1890) accepted as Daptonema normandicum (de Man, 1890)
    148. Species Theristus norvegicus Allgén, 1946 accepted as Daptonema norvegicus (Allgén, 1946)
    149. Species Theristus norwegicus (Allgén, 1933)
    150. Species Theristus notoistospiculoides Allgén, 1959
    151. Species Theristus notosetosus Allgén, 1959
    152. Species Theristus obtusicephalus Schuurmans Stekhoven, 1950
    153. Species Theristus oistospiculoides Allgén, 1959 accepted as Daptonema buetschlii Schuurmans Stekhoven, 1935
    154. Species Theristus oistospiculum (Allgen, 1932)
    155. Species Theristus orientalis Gagarin & Thanh, 2005
    156. Species Theristus ostentator Wieser & Hopper, 1967
    157. Species Theristus otoplanobius Gerlach, 1951
    158. Species Theristus oxycerca de Man accepted as Daptonema oxycerca (de Man, 1888)
    159. Species Theristus oxycercus (De Man, 1888) accepted as Cylindrotheristus oxycercus Wieser
    160. Species Theristus oxyuroides (Stekhoven, 1931) accepted as Cylindrotheristus oxyuroides (Stekhoven, 1931)
    161. Species Theristus pacificus (uncertain > taxon inquirendum)
    162. Species Theristus pannonicus Andrássy, 1985
    163. Species Theristus papillatus Murphy, 1965 accepted as Daptonema papillatus
    164. Species Theristus parabutschlii Timm, 1961 accepted as Paramonohystera parabutschlii (Timm, 1961)
    165. Species Theristus paraelaboratus Timm, 1952
    166. Species Theristus parambronensis Timm, 1954
    167. Species Theristus paranormandicus Timm, 1952 accepted as Paramonohystera paranormandica (Micoletzky, 1922)
    168. Species Theristus parasetosus (Allgén, 1928)
    169. Species Theristus parasiticus Penso, 1938
    170. Species Theristus paratortus Vitiello, 1971 accepted as Daptonema paratortus (Vitiello, 1971)
    171. Species Theristus paravelox Allgén, 1934
    172. Species Theristus paroistospiculoides Allgén, 1959
    173. Species Theristus parvulus Timm, 1954
    174. Species Theristus pellucidus Allgén, 1939
    175. Species Theristus pertenuis Schuurmans Stekhoven, 1935
    176. Species Theristus pictus Gerlach, 1951
    177. Species Theristus platonovae Galtsova, 1976 accepted as Daptonema platonovae Galtsova, 1976
    178. Species Theristus polychaetophilus Hopper, 1966
    179. Species Theristus pratti Murphy, 1964
    180. Species Theristus problematicus (Allgén, 1928)
    181. Species Theristus procerus Gerlach, 1951
    182. Species Theristus profundus Blome, 1982
    183. Species Theristus proprius Lorenzen, 1972
    184. Species Theristus psammoides Warwick, 1970 accepted as Daptonema psammoides (Warwick, 1970)
    185. Species Theristus pseudosetosus Filipjev, 1918 accepted as Daptonema setosus Bütschli, 1874
    186. Species Theristus pseudotortus Vitiello, 1971 accepted as Daptonema pseudotortus (Vitiello, 1971)
    187. Species Theristus pyronasi Gerlach, 1965
    188. Species Theristus quadripapillatus Decraemer & Coomans, 1978
    189. Species Theristus resimus Wieser, 1959 accepted as Cylindrotheristus resimus (Wieser, 1959)
    190. Species Theristus rezaki Jensen, 1986
    191. Species Theristus rhynchonemoides Hopper, 1961
    192. Species Theristus roscoffiensis Vitiello, 1967
    193. Species Theristus ruffoi Andrássy, 1959
    194. Species Theristus rusticus Kreis, 1929 accepted as Daptonema rusticus Kreis, 1929
    195. Species Theristus sabulicola (Filipjev, 1918)
    196. Species Theristus sanctimarteni Timm, 1957
    197. Species Theristus scanicus Allgén, 1949
    198. Species Theristus setifer Gerlach, 1952 accepted as Daptonema setifer (Gerlach, 1952)
    199. Species Theristus setosa Of Authors accepted as Mesotheristus setosus (Bütschli, 1874)
    200. Species Theristus setosus Bütschli, 1874 accepted as Daptonema setosum (Bütschli, 1874)
    201. Species Theristus simplex Allgén, 1959
    202. Species Theristus sinuosus Wieser, 1959
    203. Species Theristus sonnae Bussau, 1993
    204. Species Theristus spirus Gerlach, 1959 accepted as Pseudotheristus spirus (Gerlach, 1959)
    205. Species Theristus steineri Filipjev, 1922 accepted as Theristus acer Bastian, 1865
    206. Species Theristus stichotricha Schuurmans Stekhoven, 1950
    207. Species Theristus strandi Allgén, 1934
    208. Species Theristus stranus Gerlach, 1957
    209. Species Theristus streltzovi Galtsova et al., 1980
    210. Species Theristus strelzovi Galtsova, Platonova, Streltsova & Petukhov, 1980
    211. Species Theristus subacer Pavljuk, 1984
    212. Species Theristus subcurvatus Lorenzen, 1977
    213. Species Theristus subsetosus Schneider, 1943 accepted as Daptonema setosus Bütschli, 1874
    214. Species Theristus svalbardensis Gerlach, 1965 accepted as Daptonema svalbardense (Gerlach, 1965)
    215. Species Theristus tenuicaudatus Allgén, 1951
    216. Species Theristus tenuispiculum (Ditlevsen, 1918) accepted as Daptonema tenuispiculum (Ditlevsen, 1918)
    217. Species Theristus tersus Gerlach, 1956 accepted as Metadesmolaimus tersus (Gerlach, 1956)
    218. Species Theristus tessae Heyns & Coomans, 1989 accepted as Penzancia tessae (Heyns & Coomans, 1989)
    219. Species Theristus tortus Wieser & Hopper, 1967 accepted as Cylindrotheristus tortus (Wieser & Hopper, 1967)
    220. Species Theristus trecuspidatus Wieser, 1959 accepted as Cylindrotheristus trecuspidatus (Wieser, 1959)
    221. Species Theristus trichinus Gerlach, 1956 accepted as Daptonema trichinus (Gerlach, 1956)
    222. Species Theristus trichospiculum (Allgén, 1933)
    223. Species Theristus uncinatus Wieser, 1959
    224. Species Theristus variasetosus Pavljuk, 1984 accepted as Daptonema variasetosus (Pavljuk, 1984)
    225. Species Theristus velox (Bastian, 1865)
    226. Species Theristus vesentiniae Andrássy, 1962
    227. Species Theristus wegelinae Andrássy, 1962
    228. Species Theristus wimmeri Wieser, 1959
    229. Species Theristus xyaliformis Wieser & Hopper, 1967 accepted as Cylindrotheristus xyaliformis (Wieser & Hopper, 1967)
  60. Genus Trichotheristus Wieser, 1956
    1. Species Trichotheristus articulatus Huang & Zhang, 2006
    2. Species Trichotheristus circumscriptus Wieser, 1959
    3. Species Trichotheristus erectus Wieser & Hopper, 1967
    4. Species Trichotheristus floridanus Wieser & Hopper, 1967
    5. Species Trichotheristus galeatus Wieser & Hopper, 1967
    6. Species Trichotheristus heterus Gerlach, 1957
    7. Species Trichotheristus hirtus Gerlach, 1951 accepted as Trichotheristus setosus Bütschli, 1874
    8. Species Trichotheristus laxus Wieser, 1956
    9. Species Trichotheristus longisetosus Schuurmans Stekhoven & De Coninck, 1933
    10. Species Trichotheristus mirabilis (Schuurmans Stekhoven & De Coninck, 1933)
    11. Species Trichotheristus paramirabilis Gerlach, 1955
    12. Species Trichotheristus psammoides (Warwick, 1970)
    13. Species Trichotheristus sanctimarteni Timm, 1957
    14. Species Trichotheristus setifer Gerlach, 1952
    15. Species Trichotheristus setosus Bütschli, 1874
  61. Genus Valvaelaimus Lorenzen, 1977
    1. Species Valvaelaimus euxinus (Filipjev, 1918)
    2. Species Valvaelaimus maior (Gerlach, 1956) accepted as Theristus maior Gerlach, 1956
  62. Genus Wieserius (uncertain, unassessed)
    1. Species Wieserius fimbriatoides (Chitwood & Murphy, 1964)
    2. Species Wieserius fimbriatoides Wieser, 1956
  63. Genus Xenolaimus Cobb, 1920
    1. Species Xenolaimus pauroamphus Nichols, 1979
    2. Species Xenolaimus striatus Cobb, 1920
  64. Genus Xyala Cobb, 1920
    1. Species Xyala aestuariensis Vincx & Furstenberg, 1988
    2. Species Xyala australis (Stewart & Nicholas, 1994)
    3. Species Xyala barbata Ward, 1972
    4. Species Xyala brevibucca Stewart & Nicholas, 1994
    5. Species Xyala cancellata (Schulz, 1938)
    6. Species Xyala clavulatum Gerlach, 1957
    7. Species Xyala coronalata (Stewart & Nicholas, 1994)
    8. Species Xyala exigua Wieser, 1956
    9. Species Xyala hanleyi
    10. Species Xyala imparis Boucher & Helléouët, 1977
    11. Species Xyala imparis Vincx, 1988
    12. Species Xyala litorium Cobb, 1920
    13. Species Xyala longicaudata Ward, 1972
    14. Species Xyala macramphis
    15. Species Xyala nana (Stewart & Nicholas, 1994)
    16. Species Xyala nidrosiense (Allgén, 1933)
    17. Species Xyala oxybiotica Jensen, 1986
    18. Species Xyala psammonalis Vincx & Furstenberg, 1988
    19. Species Xyala riemanni Boucher & Helléouët, 1977
    20. Species Xyala smo Warwick & Platt, 1973
    21. Species Xyala striata Cobb, 1920
    22. Species Xyala truncatum (Stekhoven, 1950)
  65. Genus Zygonemella Cobb, 1920
    1. Species Zygonemella striata Cobb, 1920
marine
recent only
Not documented
Taxonomic remark spelled Xyalinidae in Parker  
Taxonomic remark spelled Xyalinidae in Parker [details]
IRMNG (2021). Xyalidae Chitwood, 1951. Accessed at: https://www.irmng.org/aphia.php?p=taxdetails&id=115193 on 2024-11-01
Date
action
by
2006-09-19 22:00:00Z
created
Rees, Tony
2011-12-31 23:00:00Z
changed
Rees, Tony

basis of record Hallan, J. (2000-2017). Biology Catalog (2012 version), http://bug.tamu.edu/research/collection/hallan/ (as at 2012). [details] 

basis of record Brands, S. J. (compiler). (1989-2005). Systema Naturae 2000. Amsterdam, The Netherlands (2006 version). Originally available online at http://sn2000.taxonomy.nl/; for current information, refer http://taxonomicon.taxonomy.nl/ProjectDescription.aspx . [details] 

basis of record WoRMS (Mar 2013) [details] 

current name source Hodda, M. (2011). Phylum Nematoda Cobb 1932. In: Zhang, Z.-Q. (Ed.) Animal biodiversity: An outline of higher-level classification and survey of taxonomic richness. <em>Zootaxa.</em> 3148: 63-95. [details] 

extant flag source Systema Naturae 2000 (2006 version) [details] 

habitat flag source Hodda, M. (2011). Phylum Nematoda Cobb 1932. In: Zhang, Z.-Q. (Ed.) Animal biodiversity: An outline of higher-level classification and survey of taxonomic richness. <em>Zootaxa.</em> 3148: 63-95. [details] 
Unreviewed
Classification Eukaryota (Superkingdom) > Animalia (Kingdom) > Eumetazoa (Subkingdom) > Nematoda (Phylum) > Chromadorea (Class) > Chromadoria (Subclass) > Monhysterida (Order) > Xyalidae (Family) [details]

Descriptive info Mostly marine but with some freshwater aquatic species, microbivorous (Hodda) [details]

Habitat Marine and nonmarine [details]

Taxonomic remark spelled Xyalinidae in Parker [details]
To WoRMS 
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