History of
  Turbellarian Research
      compiled by Steve Schilling
  Acelis (part) "species" Yeri & Kaburaki, 1918
  Choeradoplana abaiba Carbayo, Silva, Riutort, & Alvarez-Presas, 2017
  Plagiostomum abboti Karling, 1962
  Dendrocoelides abditum (Kenk, 1940)
  Dendrocoelum abditum (Kenk, 1940)
  Paradendrocoelum abditum Kenk, 1940
  Amblyplana aberana Mell, 1904
  Microplana aberana (Mell, 1904)
  Dugesia aberana Neppi, 1904
  Rhynchodemus aberanus (Mell, 1904)
  Ilyplana aberrans Bock, 1925
  Stylochoplana aberrans Kato, 1944
  Itaipusa aberrans Diez, Aguirre, Reygel, & Artois, 2021
  Ilyplana aberrans Bock, 1925
  Stylochoplana aberrans Kato, 1944
  Crucimusculata Aberrantospermata Jondelius, Wallberg, Hooge, & Raikova, 2011
Protocotylus flavus abissorum Timoshkin & Porfireva, 1989
  Dugesia aborensis (Whitehouse, 1913)
  Planaria aborensis Whitehouse, 1913
  Crenobia abscissa (Ijima, 1887)
  Euplanaria absoloni (Komarek, 1919)
  Dugesia absoloni (Komarek, 1919)
  Geopaludicola absoloni Komarek, 1919
  Luteostriata abundans (Graff, 1899)
  Notogynaphallia abundans (Graff, 1899)
  Geoplana abundans (Graff, 1899)
  marginata abundans var. Graff, 1899
  Microdalyellia abursalis (Ruebush, 1937)
  Dalyellia abursalis Ruebush, 1937
  Bhambathorhynchus abursalis Willems & Artois, 2017
  Archotoplana abutaensis Tajika, 1983
Geocentrophora wagini abyssalis Timoshkin, 2004
  Opisthocystis abyssalis Timoshkin, 1986
  Fecampia abyssicola Christensen, 1981
  Protomonotresinae Acanthiella Rieger & Sterrer, 1975
  Karlingiinae Acanthomacrostomum Papi & Swedmark, 1959
  Typhloplanidae Acanthopharynx Reisinger, 1924
  Cannoninae Acanthopseudomonocelis Curini-Galletti & Cannon, 1995
  Pseudocerotidae Acanthozoon Collingwood, 1876
  Pseudocerotidae Acanthozoon Collingwood, 1876
  Pseudoceros (Acanthozoon) Heath & McGregor, 1912
  Gieysztoria acariaia Marcus, 1946
  (Gieysztoria) acariaia Marcus, 1946
Phaenocora unipunctata acaudata (Wese, 1942)
  quinquelineata accentuata Steel, 1897
Fletchamia quinquelineata accentuata (Steel, 1897)
  Plagiostomidae Acelis (part) Diesing, 1862
  Plehniidae Acelis (part) Plehn, 1896
  Euneoophora Acentrosomata Egger, Lapraz, Tomiczek, et al., 2015
  Bulbotoplana acephala Ax, 1956
  Euryleptidae Aceros Lang, 1884
  Euryleptinae Aceros Lang, 1884
  Itaipusa acerosa (Brunet, 1972)
  Utelga acerosa Brunet, 1972
  Euryleptinae Acerotisa Strand, 1928
  Euryleptidae Acerotisa Strand, 1928
  Cestoplanidae Acestoplana Faubel, 1983
  Phaenocora achaeorum Nasonov, 1919
  Temnocephalinae Achenella Cannon, 1993
  Convolutidae Achoerus Beklemischev, 1914
  Anaperidae Achoerus Beklemischev, 1914
  Acholadidae Acholades Hickman & Olsen, 1955
  Endoaxonemata Acholadidae Hickman & Olsen, 1955
  Neodalyellida Acholadidae Hickman & Olsen, 1955
  Plagiostomum achromaticum Mahan, 1946
  Microstomum achroophthalmum Diesing, 1862
  Temnosewellia acicularis Sewell, Cannon & Blair, 2006
  Temnosewellia acirra Cannon & Sewell, 2001
  Cicerinidae Acirrostylus Van Steenkiste, Volonterio, Schockaert & Artois, 2008
  Plagiostomidae Acmostomum Schmarda, 1859
  Acoelomorpha Acoela Uljanin, 1870
  Xenacoelomorpha Acoelomorpha Ehlers, 1985
  Actinoposthiidae Acoelopelophila Ceccolini & Cianferoni, 2022
  Plagiostomum acoluthum Marcus, 1948
  Polycladida (II) Acotylea Lang, 1884
  Polycladida Acotylea Lang, 1884
  Polycladida (II) Acotylina Pearse, 1936
  Protoplanellinae Acrochordonoposthia Reisinger, 1924
  Dendrocoelidae Acromyadenium de Beauchamp, 1931
  Prosthiostomum acroporae Rawlinson, Gillis, Billings & Borneman, 2011
  Prosthiostomum acroporae Li, 2019
  Amakusaplana acroporae Rawlinson, Gillis, Billings & Borneman, 2011
  Polycystidinae Acrorhynchides Strand, 1928
  Polycystididae Acrorhynchidinae Evdonin, 1977
  Polycystididae Acrorhynchina Graff, 1882
  Polycystidinae Acrorhynchus Graff, 1882
  Alexlutheria acrosiphoniae Karling, 1956
  Acrumeninae Acrumena Brunet, 1965
  Cicerinidae Acrumeninae Karling, 1980
  Notoplana acticola (Boone, 1929)
  Leptoplana acticola Boone, 1929
  Notocomplana acticola (Boone, 1929)
  Leptoplana acticola Boone, 1929
  Notoplana acticola (Boone, 1929)
  Actinodactylellidae Actinodactyla Haswell, 1893
  Actinodactylellinae Actinodactylella Haswell, 1893
  Temnocephaloidea Actinodactylellidae Benham, 1901
  Temnocephalidae Actinodactylellinae Benham, 1901
  Childiidae Actinoposthia An der Lan, 1936
  Actinoposthiidae Actinoposthia An der Lan, 1936
  Acoela Actinoposthiidae Hooge, 2001
  Conaperta actuosa (Kozloff, 1965)
  Convoluta actuosa (Kozloff, 1965)
  Aphanostoma actuosus (Kozloff, 1965)
  Raphidophallus actuosus Kozloff, 1965
  Itaipusa aculeata (Ax, 1959)
  Cirrifera aculeata (Ax, 1951)
  Axiutelga aculeata (Ax, 1959)
  Utelga aculeata Ax, 1959
  Coelogynopora aculeata Ax, 1951
  Sorocelis aculeata Korotneff, 1912
  Schizorhynchoides aculeatus L'Hardy, 1963
  Odontorhynchus aculeatus Karling, 1956
  Eukalyptorhynchia Aculeorhynchidae Schilke, 1969
  Aculeorhynchidae Aculeorhynchus Schilke, 1969
  Childia aculifera Nilsson, Wallberg, & Jondelius, 2011
  Obrimoposthia acuminata Sluys & Ball, 1989
  Typhlocolax acuminata Stimpson, 1857
  Typhlolepta acuminata (Stimpson, 1857)
  Haplodiscus acuminatus Bohmig, 1895
  Xenotoplana acus Ax, Weidemann & Ehlers, 1978
  Macrostomum acus Wang, 2005
  Leptoplana acuta Stimpson, 1855
  Serrula acuta Schockaert, Curini-Galletti, De Ridder, Volonterio, & Artois, 2009
  Tajikacelis acuta Curini-Galletti & Schockaert, 2021
  Leptoplana acuta Stimpson, 1855
  (Castrada) acuta Braun, 1885
  Typhlolepta acuta Girard, 1854
  Typhlocolax acuta (Girard, 1854)
  Serrulina acuta (Schockaert, Curini-Galletti, De Ridder, Volonterio, & Artois, 2009)
  Rogneda acuta Brunet, 1979
  Macrostomum acutum Ax, 2008
  Brachyrhynchoides acutus (Artois & Schockaert, 2013)
  Brachyrhynchus acutus Artois & Schockaert, 2013
  Elasmodes acutus (Stimpson, 1855)
  Lenkunya adae (Dendy, 1891)
  Australopacifica adae (Dendy, 1891)
  Geoplana adae Dendy, 1891
  Convoluta adaica Beklemisch, 1964
Geoplana fletcheri adelaidensis Dendy, 1892
  Artioposthia adelaidensis (Dendy, 1892)
  Childiidae Adeloposthia An der Lan, 1936
  Proporidae Adenocauda Dörjes, 1968
  Haploposthiidae Adenocauda Dörjes, 1968
  Protoplanellinae Adenocerca Reisinger, 1924
  Cryptocelididae Adenodactyloplana Bulnes, Faubel, & Ponce de Leon, 2003
  Dendrocoelum adenodactylosum (Stankovic & Komarek, 1927)
  Neodendrocoelum adenodactylosum (Stankovic & Komarek, 1927)
  Philactinoposthia adenogonaria Dörjes, 1968
  Convolutidae Adenopea Antonius, 1968
  Solenopharynginae Adenopharynx Ehlers, 1972
  Discocelidae Adenoplana Stummer-Traunfels, 1933
  Discocelididae Adenoplana Stummer-Traunfels, 1933
  Typhloplaninae Adenoplea Reisinger, 1924
  Thalassotyphloplanida Adenorhynchidae Ax & Heller, 1970
  Promesostomidae Adenorhynchinae Ax & Heller, 1970
  Adenorhynchidae Adenorhynchus Meixner, 1938
  Bipalium adensameri Graff, 1899
  Phaenocora adenticulata Gilbert, 1938
  Euprosthiostomum adhaerens Bock, 1925
  Euprosthiostomum adhaerens Bock, 1925
  Acentrosomata Adiaphanida Noren & Jondelius, 2002
  Adinoplanini Adinoplana Almeida & Carbayo, 2022
  Geoplaninae Adinoplanini Almeida & Carbayo, 2022
  Bipalium admarginatum de Beauchamp, 1933
  Djeziraia adriani Diez, Sanjuan, Monnens, & Artois, 2023
  Vejdovskya adriatica (Dörler, 1900)
  Pogaina adriatica (Dörler, 1900)
  Vortex adriatica Dörler, 1900
  Schultzia adriatica (Dörler, 1900)
  Annulorhynchus adriaticus Karling, 1956
  Dugesia adunca Chen & Sluys, 2022
  Bipalium adventitium Hyman, 1943
  Marionfyfea adventor Jones & Sluys, 2016
  Hallangiidae Aechmalotus Beklemischev, 1915
  Pseudodiscocelis aegeanensis Bulnes, 2010
  Thalassotyphloplanida Aegira Willems, Artois, Vermin, Backeljau, & Schockaert, 2005
  Philosyrtis aegusae Lanfranchi, Melai & Meini, 2011
  Convoluta aegyptica Antonius, 1968
  Trigonoporus aegypticus (Melouk, 1940)
  Cryptophallus aegypticus Melouk, 1940
  Cryptophallus aegypticus Melouk, 1940
  Macrostomum aegyptium Beltagi, 1972
  Dugesia aenigma De Vries, 1984
  Myozona aerumnosa Sopott-Ehlers & Schmidt, 1974
  Aulopharynx aestuarius Ehlers, 1972
  Invenusta aestus Sopott-Ehlers, 1976
  Dugesia aethiopica Stocchino, Corso, Manconi, & Pala, 2002
  Syndesmis aethopharynx Westervelt & Kozloff, 1990
  Pseudogeoplana aevipandemiae Lago-Barcia & Carbayo, 2021
  Kawanabella afanasyevae Timoshkin, 2004
  Prosthiostomum affine Stimpson, 1857
  Polycladodes affine (Codreanu & Balcesco, 1970)
  Dendrocoelum affine Codreanu & Balcesco, 1970
  Prosthiostomum affine Stimpson, 1857
  Provortex affinis (Jensen, 1878)
  Fovia affinis (Ørsted, 1843)
  Leptoplana affinis (Stimpson, 1857)
  Planaria affinis Ørsted, 1843
  Eurylepta affinis Collingwood, 1876
  Eurylepta affinis Collingwood, 1876
  Pseudoceros affinis (Kelaart, 1858)
  Pseudoceros affinis (Collingwood, 1876)
  Polyposthides affinis Palombi, 1923
  Armatoplana affinis (Palombi, 1940)
  Leptoplana affinis Stimpson, 1857
  Proxenetes affinis (Jensen, 1878)
  (Castrada) affinis Hofsten N, 1907
  Foviella affinis (Ørsted, 1843)
  Vortex affinis Jensen, 1878
  Stylochoplana affinis Palombi, 1940
  Stylochoplana affinis Palombi, 1940
  Polyposthides affinis Palombi, 1923
  Othelosoma africanum (Graff, 1899)
  Mesostoma africanum Kolasa, 1976
  Artiocotylus africanus (Graff, 1899)
  Platydemus africanus Graff, 1899
  Catenulidae Africatenula Young, 1976
  Dugesia afromontana Stocchino & Sluys, 2012
  Proporidae Afronta Hyman, 1944
  Haploposthiidae Afronta Hyman, 1944
  Microstomum afzelii Atherton & Jondelius, 2019
  Phaenocora agassizi Graff, 1911
  Pseudoceros agattiensis Dixit, 2019
  Spathula agelaea Hay & Ball, 1979
  Dendrocoelum agile de Beauchamp, 1932
  Promesostoma agile (Levinsen, 1879)
  Stenostomum agile Silliman, 1885
  Bolbodendrocoelum agile de Beauchamp, 1932
  Mecynostomum agile Jensen, 1878
  Baltalimania agile (Jensen, 1878)
  Mesostomum agile Levinsen, 1879
  Archaphanostoma agile (Jensen, 1878)
  Rogneda agilis Uljanin, 1870
  Stylochoplana agilis Lang, 1884
  Monotus agilis Graff L, 1882
  Dugesia agilis (Stringer, 1909)
  Stylochoplana agilis Lang, 1884
  Kambanella agilis Steinböck, 1931
  Comoplana agilis (Lang, 1884)
  (Castrella) agilis Fuhrmann, 1900
  Pseudomonocelis agilis (Schultze, 1851)
  Jensenia agilis (Fuhrmann, 1900)
  Euplanaria agilis (Stringer, 1909)
  Haplodiscus agilis Beklemischev, 1927
  Planaria agilis Stringer, 1909
  Convoluta agilis An der Lan, 1936
  (Castrada) agilis Dorner, 1902
  Maehrenthalia agilis (Levinsen, 1879)
  Monocelis agilis Schultze, 1851
  Pocillorhynchus agilis Brunet, 1973
  Monops agilis (1) (Schultze, 1851)
  Monops agilis (2) Diesing, 1862
  Phaenocora aglobulata Houben & Artois, 2015
  Newzealandia agricola (Dendy, 1894)
  Geoplana agricola Dendy, 1894
  Choeradoplana agua Carbayo, Silva, Riutort & Alvarez-Presas, 2017
  Pseudostylochus aino Kato, 1937
  Pseudostylochus aino Kato, 1937
  Microplana aixandrei Vila-Farre, Mateos, Sluys, & Romero, 2008
  Mesostoma ajpetri Nasonov, 1924
  Plagiostomidae Akamptostoma Riedl, 1959
  Polycelis akkeshi Ichikawa & Kawakatsu, 1963
  Seidlia akkeshi (Ichikawa & Kawakatsu, 1963)
  Microstylochus akkeshiensis Kato, 1937
  Mirostylochus akkeshiensis Kato, 1937
  Mirostylochus akkeshiensis Kato, 1937
  Ommatoplana akkeshiensis (Kato, 1937)
  Sphalloplana alabamensis Hyman, 1945
  Pseudodalyellia alabamensis Van Steenkiste, Gobert & Artois, 2011
  Paraproboscifer alacerregis De Clerck, 1994
  Bothrioplana alacris Sekera, 1889
  Thysanozoon alagoensis Bahia, Padula, Correia, & Sovierzoski, 2015
  Dendrocoelidae Alaoplana Kenk, 1974
  Pogaina alaskana Ax & Armonies, 1990
  Ptychopera alaskana Ax & Armonies, 1990
  Promesostoma alaskanum Ax & Armonies, 1990
  Otoplaninae Alaskaplana Ax & Armonies, 1990
  Dendrocoelopsis alaskensis Kenk, 1953
  Coelogynopora alata Tajika, 1981
  Microstomidae Alauretta Mereschkowsky, 1878
  Microstomidae Alaurina Busch, 1851
  Penula alba Kelaart, 1858
  Cryptocelis alba (Schmidtlein, 1880)
  Geoplana alba Dendy, 1891
  Cryptocelis alba Lang, 1884
  Dendrocoelum alba (Linné, 1746)
Crenobia alpina alba (Oye, 1935)
  Leptoplana alba Kelaart, 1858
Caenoplana sanguinea alba Dendy 1891
  Eurylepta alba (Freeman, 1933)
  Monocelis alba Levinsen, 1879
  Dalyellia alba Higley, 1918
  (Castrella) alba Luther, 1955
  Coleophora alba (Levinsen, 1879)
  Leptoplana alba Schmidtlein, 1880
  Spathula alba Allison, 1997
  Ascidiophilla alba Newman, 2002
  Polycladodes alba Steinmann, 1910
Australopacifica sanguinea alba Dendy, 1891
  Temnosewellia alba Sewell, Cannon & Blair, 2006
Geoplana sanguinea alba Dendy, 1892
  Leptoplana alba Lang, 1880
  Marcusia alba Cuadrado, Rodriguez, Moro, Grande, & Noreña, 2021
  Caenoplana alba (Dendy, 1891)
Planaria alpina alba Oye, 1935
  Sorocelis alba Sabussow, 1903
  Leptoplana alba (Kelaart, 1858)
  Alaurina alba Attems, 1897
Australoplana sanguinea alba (Dendy, 1891)
  Acerotisa alba (Freeman, 1933)
  Pericelis alba (Cuadrado, Rodriguez, Moro, Grande, & Noreña, 2021)
  Friedmaniella alba Timoshkin, 1985
  Minona alba Levinsen, 1879
  Australoplana alba (Dendy, 1891)
  Penecurva albata Ichikawa & Kawakatsu, 1962
  Phagocata albata (Ichikawa & Kawakatsu, 1962)
  Temnosewellia albata Sewell, Cannon & Blair, 2006
  Crassiplana albatrossi Hyman, 1955
  Crassiplana albatrossi Hyman, 1955
  Polycystidinae Albertorhynchus Schockaert, 1976
  Baicalellia albicauda Nasonov, 1930
  Pasipha albicaudata Amaral & Leal-Zanchet, 2018
  Convoluta albicincta Schultze, 1851
  Prostheceraeus albicinctus Lang, 1884
  Monotus albicinctus (Schultze, 1849)
  Platydemus albicinctus Graff, 1899
  Anisorhynchodemus albicinctus (Graff, 1899)
  Microplana albicollis (Graff, 1899)
  Rhynchodemus albicollis Graff, 1899
  Orthodemus albicollis (Graff, 1899)
  Pseudoceros albicornis (Stimpson, 1857)
  Prostheceraeus albicornis (Stimpson, 1857)
  Prostheceraeus albicornus (Stimpson, 1857)
  Proceros albicornus Stimpson, 1857
  Pseudoceros albicornus (Stimpson, 1857)
  Pseudoceros albicuneatus Prudhoe, 1989
  Syndesmis albida Kozloff & Westervelt, 1990
  Dendrocoelum albidum Kenk, 1978
  Arthurdendyus albidus Jones & Gerard, 1999
  Olisthanella albiensis Sekera, 1912
  Sorocelis albifrons Korotneff, 1910
  Pseudoceros albimaculatus Prudhoe, 1989
  Planariidae Albioplanaria Kawakatsu, 1966
  Planariidae Albiplanaria Komarek, 1926
  Pseudoceros albireticulatus Prudhoe, 1989
  Albiplanaria albissima Vejdovsky, 1883
  Phagocata albissima (Vejdovsky, 1883)
  Fonticola albissima (Vejdovsky, 1883)
  Planaria albissima Vejdovsky, 1883
  Kuma albiventer (Marcus, 1954)
  Haploposthia albiventer Marcus, 1954
  Bipalium albo-coeruleus (Bleeker, 1844)
  Sphyrocephalus albo-coeruleus Bleeker, 1844
  Minona albocincta Curini-Galletti, 1997
  Prostheceraeus albocinctus Lang, 1884
  Cycloporus albofasciatus Newman & Cannon, 2002
  Monocelis alboguttata Curini-Galletti, 1991
  Geoplana albolineata Steel, 1897
  Australopacifica albolineata (Steel, 1897)
Dugesia festae albolineata Borelli, 1898
Dugesia montana albolineata Nurse, 1950
  festae albolineata Borelli, 1898
  Caenoplana albolineata (Steel, 1897)
Girardia festai albolineata (Borelli, 1898)
  Darwinia albomaculata Pereyaslawzewa, 1892
  Armatoplana albomaculata Oya, Tsuyuki, & Kajihara, 2022
  Convoluta albomaculata (Pereyaslawzewa, 1892)
  Pseudoceros albomarginatus Hyman, 1959
  Pseudoceros albomarginitus Hyman, 1959
  Geoplana albonigra (Riester, 1938)
  Choeradoplana albonigra (Riester, 1938)
  Notogynaphallia albonigra (Riester, 1938)
  Acanthozoon albopapillosum Hyman, 1959
  Acanthozoon albopapillosus Hyman, 1959
  Pseudogeoplana albopunctata (Graff, 1899)
  Geoplana albopunctata Graff, 1899
  Acanthozoon albopunctatum Prudhoe, 1978
  Acanthozoon albopunctatus Prudhoe, 1978
  Microstomum album (Attems, 1897)
  Aphanostoma album Dörjes, 1968
  Plagiostomum album Hyman, 1938
  Neodendrocoelum album Komarek, 1953
Trigonostomum setigerum album Graff, 1905
  Cylindrostoma album Levinsen, 1879
  Allostoma album (Levinsen, 1879)
  Dendrocoelum album (Steinmann, 1910)
  Macrostomum album Higley, 1918
  Stylochus albus Hallez, 1905
  Oligocladus albus Freeman, 1933
  Oligocladus albus Freeman, 1933
  Gyrator albus Silliman, 1885
  Monotus albus (Levinsen, 1879)
  Stylochus albus Hallez, 1905
  Stylochoides albus (Hallez, 1905)
  Stylochoides albus Hallez, 1905
  Syndesmis alcalai Komschlies & Vande-Vusse, 1980
  Notoplanides alcha Marcus & Marcus, 1968
  Notoplanides alcha Marcus & Marcus, 1968
  Polycystidinae Alcha Marcus, 1949
  Stylochoplana alcha (Marcus & Marcus, 1968)
  Polycystididae Alchoides Willems, Schockaert, Artois 2006
  Alchoides alchoides Willems, Schockaert, Artois 2006
  Leptoplana alcinoi Schmidt, 1861
  Notoplana alcinoi (Schmidt, 1861)
  Notoplana alcinoi (Schmidt, 1862)
  Leptoplana alcinoi Schmidt, 1862
  Thysanozoon alderi Collingwood, 1876
  Thysanozoon alderi Collingwood, 1876
  Acanthozoon alderi (Collingwood, 1876)
  Opisthocystis aleksandri Timoshkin, Zaytseva & Gutsol, 2009
  Adinoplana alerna Almeida & Carbayo, 2022
  Dendrocoelum alexandrinae Codreanu & Balcesco, 1970
  Paradendrocoelum alexandrinae (Codreanu & Balcesco, 1970)
  Stylochus alexandrinus Steinböck, 1937
  Stylochus alexandrinus Steinbock, 1937
  Jenseniidae Alexlutheria Karling, 1956
  Geoplana alfordensis Dendy, 1896
  Australopacifica alfordensis (Dendy, 1896)
  Artioposthia alfordensis (Dendy, 1896)
  Proschizorhynchus algarvensis Gobert, Monnens, Eerdekens, Schockaert, Reygel, & Artois, 2020
  Vaillantiella algerica Luther, 1955
  Monocelis algicola Curini-Galletti & Casu, 2016
  Polycystis ali Schockaert, 1982
  Eurylepta alicula Pitale & Apte, 2021
  Catenula alitha Marcus, 1945
  Obama allandra Marques, Rossi, Valiati & Leal-Zanchet, 2018
  Latocestidae I Alleena Marcus, 1947
  Latocestinae Alleena Marcus, 1947
  Lehardyia alleithoros Whitson, Smith & Litvaitis, 2011
  Thysanozoon allmani Collingwood, 1876
  Thysanozoon allmani Collingwood, 1876
  Acanthozoon allmani (Collingwood, 1876)
  Neoophora Alloeocoela Graff, 1882
  Plagiostomidae Alloeopharynx Steinböck, 1932
  Unguiphora Alloeostyliphora Curini-Galletti, Oggiano, & Casu 2001
  Uteriporinae Allogenus Sluys, 1989
  Neoophora Alloiocoela Graff, 1882
  Stylochoplaninae Alloioplana Plehn, 1896
  Stylochoplanidae Alloioplana Plehn, 1896
  Plagiostomidae Allopharynx Steinböck, 1932
  Pseudostomidae Allostoma Beneden, 1861
  Cylindrostomidae Allostoma Beneden, 1861
  Prolecithophora Allostomidae Graff, 1882
  Cylindrostomidae Allostominae Graff, 1882
  Cylindrostomidae Allostomum Beneden, 1861 in Mack-Fira (1974)
  Convolutidae Alluna Faubel & Regier, 1983
  Isodiametridae Alluna Faubel & Regier, 1983
  Actinoposthiidae Alluna Faubel & Regier, 1983
  Polycelis alma-atina Zabusova, 1947
  Seidlia almaatina Zabusova, 1947
Seidlia sabussowi almaatina Porfirieva, 1960
Polycelis sabussowi almaatina (Zabusova, 1947)
  Fasciola alpina (Dana, 1766)
Crenobia alpina alpina (Dana, 1766)
  Dugesia alpina (Dana, 1766)
  Crenobia alpina (Dana, 1766)
  Planaria alpina (Dana, 1766)
  Temnohaswellia alpina Sewell, Cannon & Blair, 2006
  Prorhynchus alpinus Steinböck, 1924
Polycelis tenuis altaica Livanov & Zabusova, 1940
Ijimia tenuis altaica Livanov & Zabusova, 1940
  Fonticola altaica Livanov & Zabusova, 1940
  Phagocata altaica (Livanov & Zabusova, 1940)
  Geoplana alterfusca Hyman, 1962
  Novibipalium alterifuscatum Kawakatsu, Ogren & Froehlich, 1998
Bipalium penzigi alternans de Beauchamp, 1930
Bipaliinae Bipalium alternans de Beauchamp, 1930
  Phaenocora alticola Ruebush, 1939
  Eumecynostomum altitudi Faubel & Regier, 1983
  Plagiostomidae Alvaera Bock, 1923
  Geoplanini Amaga Ogren & Kawakatsu, 1990
  Geoplana amagensis Fuhrmann, 1914
  Amaga amagensis (Fuhrmann, 1914)
  Albertorhynchus amai Schockaert, 1976
  Rogneda amai (Schockaert, 1976)
  Cryptocelis amakusaensis Kato, 1936
  Cryptocelis amakusaensis Kato, 1936
  Prosthiostomidae Amakusaplana Kato, 1938
  Prosthiostomidae Amakusaplana Kato, 1938
  Macrostomum amaniense Young, 1976
  Limnostylochus amara (Kaburaki, 1918)
  Limnoplana amara (Kaburaki, 1918)
  Shelfordia amara Kaburaki, 1918
  Shelfordia amara Kaburaki, 1918
  Planaria amara Fox, 1927
  Limnostylochus amara (Kaburaki, 1918)
  Haplogonaria amarilla Hooge & Eppinger, 2005
  Temnocephala amatoi Seixas & Amato, 2020
  Planaria ambigua Böhmig, 1902
  Curtisia ambigua (Bohmig, 1902)
  Dugesia ambigua Bohmig, 1902
  Pseudocerotidae Amblyceraeus Plehn, 1897
  Pseudocerotidae Amblyceraeus Plehn, 1898
  Microplaninae Amblyplana Graff, 1896
  Anisorhynchodemus amboinensis (Graff, 1899)
  Rhynchodemus amboinensis Graff, 1899
  Thylacorhynchus ambronensis Schilke, 1970
  Carcharodorhynchus ambronensis Schilke, 1970
  Parotoplana ambrosolii Curini-Galletti & Delogu, 2014
  Cryptocelidinae Amemiyaia Kato, 1944
  Cryptocelidinae Amemiyaia Kato, 1944
  Digynopora americana Hyman, 1940
  Digynopora americana Hyman, 1940
Vannuccia tripapillosa americana Ax & Sopott-Ehlers, 1979
  Maehrenthalia americana Ax & Armonies, 1990
  Myozonaria americana Rieger, 1971
  Dendrocoelopsis americana (Hyman, 1939)
  Sorocelis americana Hyman, 1939
  Otoplaninae Americanaplana Ax & Ax, 1967
  Rhynchodemus americanus Hyman, 1943
  Polycystididae Ametochus Willems, Schockaert, Artois 2006
  Stylochoplana amica Kato, 1937
  Stylochoplana amica Kato, 1937
  Minona amnica Ball & Hay, 1977
  Duplominona amnica (Ball & Hay1977)
  Diatomovora amoena Kozloff, 1965
  Allostoma amoenum Karling, 1962
Vorticeros cyrtum amoma Marcus, 1947
  Amphibioplanidae Amphibioplana Stocchino & Sluys, 2021
  Cavernicola Amphibioplanidae Stocchino & Sluys, 2021
  Planocera amphibola (Schmarda, 1859)
  Protoplanellinae Amphibolella Findenegg, 1924
  Planocera amphibolus (Schmarda, 1859)
  Stylochus amphibolus Schmarda, 1859
  Stylochus amphibolus Schmarda, 1859
  Convolutidae Amphichoerus Graff, 1891
  Kronborgia amphipodicola Christensen & Kanneworff, 1964
  Schizorhynchidae Amphirhynchus Schilke, 1970
  Convolutidae Amphiscolops Graff, 1904
  Convolutidae Amphiscolopus Kato, 1957
  Stenostomum amphotum Marcus, 1945
  Trepaxonemata Amplimatricata Egger, Lapraz, Tomiczek, et al., 2015
  Dendrocoelum amplum Harrath & Sluys, 2012
  Asilomaria ampullata Karling, 1966
  Proxenetes ampullatus Ax, 1971
  (Paraxenetes) ampullatus Ax, 1971
  Prosthiostomum amri Rodriguez, Hutchings & Williamson, 2021
  Macrostomum amurense Beklemischev, 1950
  Dendrocoelidae Amyadenium de Beauchamp, 1931
  Chromoplanidae Amyella Bock, 1922
  Amyellidae Amyella Bock, 1922
  Boninioidea Amyellidae Faubel, 1984
  Chromoplanoidea Amyellidae Faubel, 1984
  Pseudocerotoidea Amyellidae Faubel, 1984
  Faubelidae Amyris Marcus & Marcus, 1968
  Gnesiocerotidae Amyris Marcus & Marcus, 1968
  Rhynchodemus anamallensis de Beauchamp, 1930
  Incapora anamallensis (de Beauchamp, 1930)
  Reinhardorhynchus anamariae Diez, Aguirre, Reygel, & Artois, 2021
  Cratera anamariae Carbayo, 2015
  Ilyplanidae Anandroplana Hyman, 1955
  Taenioplaninae Anandroplana Hyman, 1955
  Taenioplaninae Anandroplana Hyman, 1955
  Acoela Anaperidae Dörjes, 1968
  Convolutidae Anaperus Graff, 1911
  Anaperidae Anaperus Graff, 1911
  Stenostomum anatirostrum Marcus, 1945
  Anokkostenostomum anatirostrum (Marcus, 1945)
  Debeauchampia anatolica Benazzi, 1981
  Procerodes anatolicus (Benazzi, 1981)
  Girardia anceps (Kenk, 1930)
  Euplanaria anceps Kenk, 1930
  Dugesia anceps (Kenk, 1930)
  Baicalellia anchoragensis Ax & Armonies, 1990
  Euryleptidae Anciliplana Heath & McGregor, 1912
  Euryleptinae Anciliplana Heath & McGregor, 1912
  Gnathorhynchidae Ancistrorhynchus L'Hardy, 1963
  Paulodora ancora Artois & Tessens, 2008
  Dugesia ancoraria Zhu & Wang, 2024
  Idioplaninae Ancoratheca Prudhoe, 1982
  Callioplanidae Ancoratheca Prudhoe, 1982
  Neostylochus ancorus Rodriguez, Hutchings & Williamson, 2021
  Convolutidae Ancyclocirrus Kozloff, 2000
  Isodiametridae Ancylocirrus Kozloff, 2000
  Dugesia andamanensis (Kaburaki, 1925)
  Euplanaria andamanensis (Kaburaki, 1925)
  Dugesia anderlani Kawakatsu & Hauser 1983
  Girardia anderlani (Kawakatsu & Hauser, 1983)
  Collastoma anderseni Roehl, 2017
  Kontikia andersoni Jones, 1981
  Siphoniella anderssoni Westblad, 1952
  Synsiphonium anderssoni (Westblad, 1952)
  Strongylostoma andicola Schmarda, 1859
  Geoplana andicola Schmarda, 1859
  Mesostoma andicola (Schmarda, 1859)
  Polycladus andicola Schmarda, 1859
  Pseudogeoplana andicola (Schmarda, 1859)
  Turbella andicola (1) (Schmarda, 1859)
  Turbella andicola (2) (Schmarda, 1859)
  Geoplana andina Hyman, 1962
  Dugesia andina (Borelli, 1895)
  Planaria andina Borelli, 1895
  Notogynaphallia andina (Hyman, 1962)
  Girardia andina (Borelli, 1895)
  Euplanaria andina (Borelli, 1895)
Castradella granea andreja (Nasonov, 1919)
  (Castrada) andreja Nasonov, 1919
  Mesostoma andrewsi Hyman, 1957
  Diversibipalium andrewsi (Whitehouse, 1919)
  Bipalium andrewsi Whitehouse, 1919
  Dendrocoelum angarense (Gerstfeldt, 1858)
  Sorocelis angarensis Korotneff, 1912
  Opisthocystis angarensis (Sibiriakowa, 1929)
  Planaria angarensis Gerstfeldt, 1858
Bdellocephala angarensis angarensis (Gerstfeldt, 1858)
  Polycystis angarensis Sibiriakova, 1929
  Bdellocephala angarensis (Gerstfeldt, 1858)
  Paraplanocera angeli Soutullo, Cuadrado & Norena, 2021
  Cohenella angelinae Timoshkin & Krivorotkin, 2023
  Rogneda anglica Karling, 1953
Amblyplana notabilis angolense de Beauchamp, 1951
  Othelosoma angolense (de Beauchamp, 1951)
Artiocotylus notabilis angolensis de Beauchamp, 1951
  Celidotus anguilla (Schmidt, 1857)
  Monocelis anguilla Schmidt, 1857
  Mesostoma angulare Higley, 1918
  Jensenia angulata (Jensen, 1879)
  Fasciola angulata Müller, 1773
  Vortex angulatus Jensen, 1878
  Westbladiella angulifera Riedl, 1954
Geoplana graffii angusta Dendy, 1901
  Comoplana angusta (Verrill, 1893)
  Zygantroplana angusta (Verrill, 1893)
  Phagocata angusta Kenk, 1977
  Stylochoplana angusta (Verrill, 1893)
  Zygantroplana angusta (Verrill, 1893)
Newzealandia graffii angusta (Dendy, 1901)
  Leptoplana angusta Verrill, 1893
  Stylochoplana angusta (Verrill, 1893)
  Leptoplana angusta (1) Pearse, 1938
  Leptoplana angusta (2) Pearse & Littler, 1938
  Leptoplana angusta (3) Pearse & Littler, 1938
  Leptoplana angusta (4) Verrill, 1893
Castrada stagnorum angustibursa Steinböck & Lanser, 1932
  Derostoma angusticeps Duges, 1830
  Proschizorhynchus angusticirrus Armonies, 2023
  Beklemischeviella angustior Luther, 1943
  Synsiphonium angustum Sluys & Ball, 1989
  Prosthiostomum angustum Bock, 1913
  Euprosthiostomum angustum (Bock, 1913)
  Prosthiostomum angustum Bock, 1913
  Proxenetes angustus Ax, 1951
  Rhynchodemus angustus (Hyman, 1941)
  Desmorhynchus angustus Hyman, 1941
  Rhynchodemini Anisorhynchodemus Kawakatsu, Froehlich, Jones, Ogren, and Sasaki, 2003
  Aegira annabellae Willems, Artois, Vermin, Backeljau, & Schockaert, 2005
  Shelfordia annadalei Kaburaki, 1918
  Phonorhynchoidinae Annalisella Karling, 1978
  Dugesia annandalei (Kaburaki, 1918)
  Limnostylochus annandalei (Kaburaki, 1918)
  Bdellocephala annandalei Ijima & Kaburaki, 1916
  Planaria annandalei Kaburaki, 1918
  Shelfordia annandalei Kaburaki, 1918
  Limnoplana annardalei (Kaburaki, 1918)
  Limnostylochus annardalei (Kaburaki, 1918)
  Shelfordia annardalei Kaburaki, 1918
  (Castrada) annebergensis Luther, 1946
  Galapagetula annikae Reygel, Willems & Artois, 2011
  Notoplana annula Marcus & Marcus, 1968
  Notoplana annula Marcus & Marcus, 1968
  Pogaina annulata Ax, 1970
  Scanorhynchinae Annulorhynchus Karling, 1956
  Provorticinae Annulovortex Beklemischev, 1953
  Macrostomum anocele Riedel, 1932
  Plagiostomum anocelis Brandtner, 1934
  Gonostomula anocelis Westblad, 1955
  Dendrocoelidae Anocelis (1) Stimpson, 1857
  Dendrocoelidae Anocelis (2) Grube, 1872
  Ilyplanoidea Anocellidae Quiroga, Bolanos & Litvaitis, 2006
  Anocellidae Anocellidus Quiroga, Bolanos & Litvaitis, 2006
  Stenostomidae Anokkostenostomum Norena, Damborenea & Brusa, 2005
  Bergendalia anomala Laidlaw, 1903
  Trigonoporus anomala (Laidlaw, 1903)
  Bergendalia anomala Laidlaw, 1903
  Phaenocora anomalocoela (Haswell, 1905)
  incertae sedis Anomalocoelus Haswell, 1905
  Prostheceraeus anomalus Haswell, 1907
  Prostheceraeus anomalus Haswell, 1907
  Anonymoidea Anonymidae Lang, 1884
  Pseudocerotoidea Anonymidae Lang, 1884
  Cotylea Anonymidae Lang, 1884
  Cotylea Anonymoidea Dittman, Cuadrado, Aguado, Noreña, & Egger, 2019
  Anonymidae Anonymus Lang, 1884
  Anonymidae Anonymus Lang, 1884
  Ethmorhynchus anophtalmus Meixner, 1938
  Crenobia anophthalma (Mrazek, 1907)
  Planaria anophthalma Mrazek, 1907
  Derostoma anophthalma Vejdovsky, 1895
Crenobia alpina anophthalma (Mrazek, 1907)
  Phaenocora anophthalma (Vejdovsky, 1895)
  Geoplaninae Anophthalmoplana Negrete, Francavilla, Damborenea, & Brusa, 2022
  Stenostomum anophthalmum An der Lan, 1955
  Proschizorhynchus anophthalmus L'Hardy, 1965
  Prognathorhynchus anophthalmus Meixner
  Ethmorhynchus anophthalmus Meixner, 1938
  Solenopharynx anophthalmus Meixner, 1929
  Proceropharynx anophthalmus (Meixner, 1929)
  (Castrada) anopla Sibiriakova, 1929
  Anoplodium (Anoplodiella) Bock, 1925
  Umagillinae Anoplodiera Westblad, 1930
  Umagillinae Anoplodiopsis Westblad, 1953
  Umagillinae Anoplodium Schneider, 1858
  Koinocystididae Anoplorhynchus Meixner, 1925
  Stenostomum anops Nuttycombe & Waters, 1938
  Anokkostenostomum anops (Nuttycombe & Waters, 1938)
  Catenulidae Anortha Leidy, 1852
  Convoluta anotica Schmarda, 1859
  incertae sedis Anotocelis Diesing, 1862
  Monocelis anta Marcus, 1954
  Parotoplanina antaliformis Curini-Galletti, 2014
  Australopacifica antarctica (Dendy, 1909)
  Geoplana antarctica Dendy, 1909
  Gnosonesima antarctica Reisinger, 1926
  Mesostoma antarcticum Dreyer, 1918
  Stylostomum antarcticum Hallez, 1905
  Stylostomum antarcticum Hallez, 1905
  Desmote antarcticus Shinn, 1987
  Octopoxenus antarcticus Gordeev, Biserova, Zhukov & Ekimova, 2022
  Austrorhynchus antarcticus Artois, Vermin & Schockaert, 2000
  Solenopharyngidae Anthopharynginae Ehlers, 1972
  Anthopharynginae Anthopharynx Karling, 1940
  Notoplanidae Anthoplana Bo & Betti, 2019
  Plagiostomum anthracinum Kulinitch, 1978
  Obama anthropophila Amaral, Carbayo, & Leal-Zanchet, 2015
  Polycystidinae Antiboreorhynchus Karling, 1952
  Antigonariidae Antigonaria Dörjes, 1968
  Acoela Antigonariidae Dörjes, 1968
  Girardia antillana Kenk, 1941
  Dugesia antillana Kenk, 1941
  Adenoplana antillarum Hyman, 1955
  Adenoplana antillarum Hyman, 1955
  Boninia antillarum (Hyman, 1955)
  Syndisyrinx antillarum (Powers, 1936)
  Syndesmis antillarum Powers, 1936
  Boninia antillarum (Hyman, 1955)
  Otoplana antipa An der Lan, 1964
  Anthoplana antipathellae Bo & Betti, 2019
  Conaperta antonii Achatz, Hooge & Tyler, 2007
  Faerlea antora Marcus, 1952
  Macrostomidae Antromacrostomum Faubel, 1974
  Antroposthiidae Antroposthia Faubel, 1974
  Acoela Antroposthiidae Faubel, 1976
  Convolutidae Antrosagittifera Hooge & Tyler, 2001
  Sagittiferinae Antrosagittifera Hooge & Tyler, 2001
  Anzoplanini Anzoplana Winsor, 2006
  Rhynchodeminae Anzoplanini Winsor 2006
  Stylochus aomori Kato, 1937
  Imogine aomori (Kato, 1937)
  Stylochus aomori Kato, 1937
  Syndesmis aonikenki Brusa, Montes, Marcotegui, et al., 2017
  Callioplanidae Aotearoa Holleman, 2007
  Obrimoposthia aparala Sluys & De Vries, 1988
  Flagellophora apelti Faubel & Dorjes, 1978
  Geoplana apeva Froehlich, 1959
  Obama apeva (Froehlich, 1959)
  Pasipha aphalla (Hyman, 1941)
  Geoplana aphalla Hyman, 1941
  Convolutidae Aphanostoma Ørsted, 1845
  Isodiametridae Aphanostoma Ørsted, 1845
  Acoela Aphanostomidae Bohmig, 1895
  Temnosewellia aphyodes Sewell, Cannon & Blair, 2006
  Temnosewellia apiculus Sewell, Cannon & Blair, 2006
  Apidioplanidae Apidioplana Bock, 1926
  Apidioplanidae Apidioplana Bock, 1926
  Leptoplanoidea Apidioplanidae Bock, 1926
  Planoceroidea Apidioplanidae Bock, 1926
  Obama apiguara Oliveira, Almeida & Carbayo, 2020
  Apidioplana apluda Cannon, 1990
  Dendrocoelum apodendrocoeloideum Dyganova, 1976
  Dendrocoelidae Apodendrocoelum de Beauchamp, 1931
  Acrochordonoposthia apopera Reisinger, 1924
  Proxenetes (Apoxinetes) Ax, 1971
  Planaria appendiculata Fabricius, 1826
  Turbella appendiculata Diesing, 1850
  Krumbachia appendiculata Schwank, 1980
  Macrostomum appendiculatum Fabricius, 1826
  Macrostomum appendiculatum (1) Beklemischev, 1951
  Macrostomum appendiculatum (2) Beklemischev, 1915
  Macrostomum appendiculatum (3) Beklemischev, 1922
  Macrostomum appendiculatum (4) Beklemischev, 1915
  Mesostoma appia Kolasa, 1984
  Mesostoma appinum Kolasa & Schwartz, 1988
  Geocentrophora applanata (Kennel, 1888)
  Obama applanata (Graff, 1899)
  Geoplana applanata Graff, 1899
  Prorhynchus applanatus Kennel, 1888
  Pseudobiceros apricus Newman & Cannon, 1994
  Gnathorhynchus aprosmeno An der Lan, 1967
  Yorknia aprostatica Schockaert, Curini-Galletti, De Ridder, Volonterio, & Artois, 2009
  Schockaertia aprostatica Diez, Reygel, & Artois, 2023
  Latocestinae Aprostatum Bock, 1913
  Euplanidae Aprostatum Bock, 1913
  Atrioplanaria aquaebellae Bromley, 1983
  Planoceridae Aquaplana Hyman, 1953
  Planoceridae Aquaplana Hyman, 1953
Stenostomum leucops aquariorum Luther, 1960
  Dugesia arabica Harrath & Sluys, 2013
  Hofstenia arabiensis Beltagi & Mandura, 1991
  Acanthozoon aranfaibo Cuadrado, Moro & Norena, 2017
  Cephaloflexa araucariana Carbayo & Leal-Zanchet, 2003
  Ozametra arbora (Ozaki, 1932)
  Xenometra arbora Ozaki, 1932
  Dugesia arcadia De Vries, 1988
  Acanthopharynx arcanus Reisinger, 1924
  Carcharodopharynx arcanus (Reisinger, 1924)
  Thylacorhynchus arcassonensis de Beauchamp, 1927
  Pogaina arcassonensis Ehlers & Sopott-Ehlers, 1989
  Promonotus arcassonensis Ax, 1959
  Myozonaria arcassonensis Rieger, 1971
  Bdellocephala arcellaris (Korotneff, 1912)
  Sorocelis arcellaris Korotneff, 1912
  Childiidae Archactinoposthia Dörjes, 1968
  Actinoposthiidae Archactinoposthia Dörjes, 1968
  Convolutidae Archaphanostoma Dörjes, 1968
  Isodiametridae Archaphanostoma Dörjes, 1968
  Dendrocoelidae Archicotylus Korotneff, 1912
  Archiloinae Archilina Ax, 1959
  Archiloinae Archiloa de Beauchamp, 1910
  Monocelididae Archiloinae Faubel & Rohde, 1998
  Archiloinae Archilopsis Meixner, 1938
  Macrostomidae Archimacrostomum Ferguson, 1954
  Lithophora Archimonocelididae Meixner, 1938
  Archimonocelididae Archimonocelidinae Meixner, 1938
  Archimonocelidinae Archimonocelis Meixner, 1938
  Protomonotresinae Archimonotresis Meixner, 1938
  Dendrocoelides archipannonicus Gelei, 1927
  Cheliplanidae Archipelagoplana Noldt & Hoxhold, 1984
  Proporidae Archiproporus An der Lan, 1936
  Provorticinae Archivortex Reisinger, 1924
  Proxenetes (Archixenetes) Ax, 1971
  Otocelididae Archocelis Dörjes, 1968
  Opistominae Archopistomum An der Lan, 1939
  Archotoplaninae Archotoplana Ax, 1956
  Otoplanidae Archotoplaninae Ax, 1956
  Leptoplana arcta (Quatrefage, 1845)
  Leptoplana arcta (Quatrefage, 1845)
  Acerotisa arctica Hyman, 1953
  Microdalyellia arctica (Nasonov, 1923)
  Acerotisa arctica Hyman, 1953
  Notocaryoplana arctica Steinböck, 1935
  Beauchampiola arctica Ehlers & Franke, 1994
  Plehnia arctica (Plehn, 1896)
  Dalyellia arctica Nasonov, 1923
  Typhloplanella arctica (Nasonov, 1923)
  Olisthanella arctica Nasonov, 1923
  Proxenetes arctica Ax & Armonies, 1990
  Acelis (part) arctica Plehn, 1896
  (Typhloplanella) arctica Nasonov, 1923
  Plehnia arctica (Plehn, 1896)
  Mesostoma arcticum Hyman, 1938
  Plagiostomum arcticum Brandtner, 1934
  Nesion arcticum Hyman, 1956
  Prosthiostomum arctum Quatrefage, 1845
  Prosthiostomum arctum Quatrefages, 1845
  Kataplana arcuata Sopott-Ehlers, 1976
  Baltalimania arcuatum Atherton & Jondelius, 2022
  Rimacephalus arecepta Porfirieva, 1969
  Messoplana aremorica Ehlers & Sopott-Ehlers, 1989
  Ceratopera aremorica (Ehlers & Sopott-Ehlers, 1989)
  Archilopsis arenaria Martens, Curini-Galletti & Pucinelli, 1989
  Antigonaria arenaria Dörjes, 1968
  Haplogonaria arenaria (Ax, 1959)
  Diascorhynchides arenaria Schilke, 1970
  Mecynostomum arenarium Ax, 1959
  Pseudostomum arenarium Meixner, 1938
  Schizorhynchus arenarius de Beauchamp, 1927
  Gyratrix arenarius Evdonin, 1971
  Proschizorhynchus arenarius (de Beauchamp, 1927)
  Proxenetes arenarius Meixner, 1938
  Paraschizorhynchus arenarius Meixner, 1938
  Pseudograffilla arenicola Meixner, 1938
  Girardia arenicola Hellmann & Leal-Zanchet, 2018
  Australopacifica arenicola (Steel, 1900)
  Cryptocelis arenicola Hallez, 1893
  Lenkunya arenicola (Steel, 1900)
  Cryptocelis arenicola Hallez, 1893
  Geoplana arenicola Steel, 1900
  Scoliopharyngia arenicola Ehlers, Reise, & Armonies, 1995
  Haplogonaria arenicolae Faubel & Warwick, 2005
  Dunwichia arenosa Faubel, Blome & Cannon, 1994
  Stylochus arenosus Willey, 1897
  Stylochus arenosus Willey, 1897
  Imogine arenosus (Willey, 1897)
  Phagocata arethusa (Dalyell, 1814)
  Stenostomum arevaloi Gieysztor, 1931
  Temnosewellia arga Sewell, Cannon & Blair, 2006
  Argaplanini Argaplana Winsor, 2011
  Rhynchodeminae Argaplanini Winsor, 2011
  Supramontana argentina Negrete, Leal-Zanchet & Brusa, 2014
  Temnosewellia argeta Sewell, Cannon & Blair, 2006
  Temnosewellia argilla Sewell, Cannon & Blair, 2006
  Einarella argillophila Luther, 1948
  Sorocelis argillosa Korotneff, 1912
  Obama argus (Graff, 1899)
  Proceros argus Quatrefage, 1845
  Latocestus argus Laidlaw, 1903
  Eurylepta argus (Quatrefage, 1845)
  Latocestus argus Laidlaw, 1903
  Eurylepta argus (Quatrefage, 1845)

900 names, including those in new combination. (Max listing set to 900)

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