Chironomidae Macquart, 1838
Eudactylocladius productus Freeman, 1953
Eudactylocladius vagans Thienemann, 1950
Orthocladius abiskoensis Thienemann, 1937
Orthocladius aethiops Goetghebuer, 1939
Orthocladius albiclava (Kieffer, 1923)
Orthocladius albidohalteralis (Malloch, 1915)
Orthocladius albilobus Kieffer, 1924
Orthocladius albitarsis (Edwards, 1931)
Orthocladius albocinctus (Kieffer, 1911)
Orthocladius albrechti (Kieffer, 1924)
Orthocladius algerinus (Marcuzzi, 1950)
Orthocladius almskari Spies & Saether, 2004
Orthocladius alpinus (Kieffer, 1913)
Orthocladius amniculorum (Goetghebuer, 1935)
Orthocladius amplullaceus (Kieffer & Thienemann, 1908)
Orthocladius androgynus Bhattacharyay, 1991
Orthocladius annectens Saether, 1969
Orthocladius annellae Saether, 2005
Orthocladius annuliventris Skuse, 1889
Orthocladius anteilis (Roback, 1957)
Orthocladius antennalis (Goetghebuer, 1944)
Orthocladius appersoni Soponis, 1977
Orthocladius aprilinus (Kieffer, 1934)
Orthocladius arcticus Kieffer & Thienemann, 1919
Orthocladius arenarius Goetghebuer, 1932
Orthocladius articulatus (Santos Abreu, 1918)
Orthocladius asamadentalis Sasa & Hirabayashi, 1993
Orthocladius ashei Soponis, 1990
Orthocladius astis
Orthocladius ater (Goetghebuern, 1955)
Orthocladius atriforceps (Kieffer, 1924)
Orthocladius atrimanus (Kieffer, 1911)
Orthocladius atripluma (Kieffer, 1923)
Orthocladius attenuatus (Kieffer, 1921)
Orthocladius austriacus (Goetghebuer, 1938)
Orthocladius barbatiforceps (Kieffer, 1911)
Orthocladius barbatus (Kieffer, 1900)
Orthocladius barbicornis (Linnaeus, 1767)
Orthocladius barilochensis (Edwards, 1931)
Orthocladius bergensis Freeman, 1953
Orthocladius bicuspis (Kieffer, 1924)
Orthocladius bifasciatus (Malloch, 1918)
Orthocladius bifidus (Kieffer, 1923)
Orthocladius bilobatus (Kieffer, 1915)
Orthocladius bilyji Saether, 2003
Orthocladius binotatus (Lundstrom, 1915)
Orthocladius biverticillatus (Goetghebuer, 1938)
Orthocladius biwainfirmus Sasa & Nishino, 1995
Orthocladius biwaniger Sasa & Nishino, 1995
Orthocladius bomolai (Goetghebuer, 1931)
Orthocladius borealis (Kieffer, 1913)
Orthocladius brachydicrana Edwards, 1927
Orthocladius brachypus (Edwards, 1931)
Orthocladius brevicornis (Kieffer, 1906)
Orthocladius brevipennis Chaudhuri & Ghosh, 1982
Orthocladius breviseta Kieffer, 1923
Orthocladius bryophila (Singh, 1958)
Orthocladius bulgarensis (Goetghebuer, 1938)
Orthocladius calomera (Edwards, 1931)
Orthocladius calosandolum (Kieffer, 1921)
Orthocladius calvus Pinder, 1985
Orthocladius campestris (Hardy, 1960)
Orthocladius carlatus (Roback, 1957)
Orthocladius cavistylus (Kieffer, 1926)
Orthocladius charensis Soponis, 1977
Orthocladius chilensis Kieffer, 1906
Orthocladius chuzeseptimus Sasa, 1984
Orthocladius chuzesextus Sasa, 1984
Orthocladius cinereipennis Lundstrom, 1910
Orthocladius cingulatus Hutton, 1902
Orthocladius claripennis
Orthocladius clarkei Soponis, 1977
Orthocladius clepsydrius
Orthocladius clepsydrus (Coquillett, 1902)
Orthocladius coffmani Soponis, 1990
Orthocladius cognatus Makarchenko, 2006
Orthocladius collarti Goetghebuer, 1941
Orthocladius commutata Stora, 1936
Orthocladius confusus Marcuzzi, 1949
Orthocladius conicus Freeman, 1953
Orthocladius consmilis (Goetghebuer & Lenz, 1950)
Orthocladius consobrinus (Holmgren, 1869)
Orthocladius cooki Soponis, 1977
Orthocladius coracellus (Kieffer, 1915)
Orthocladius corax (Kieffer, 1924)
Orthocladius corporaali Goetghebuer, 1935
Orthocladius crassus (Kieffer, 1924)
Orthocladius curtipalpis (Kieffer, 1913)
Orthocladius curtiseta Saether, 1973
Orthocladius davisi (Hardy, 1960)
Orthocladius debilis Williston, 1896
Orthocladius decoratus (Holmgren, 1869)
Orthocladius defensus Makarchenko, 2006
Orthocladius deflectus Bhattacharyay, 1991
Orthocladius dentatus (Kieffer, 1923)
Orthocladius dentifer Brundin, 1947
Orthocladius difficilis (Lundbeck, 1898)
Orthocladius dispar (Goetghebuer, 1942)
Orthocladius dissimilis Kieffer, 1923
Orthocladius distalis (Goetghebuer, 1949)
Orthocladius distylus (Kieffer, 1924)
Orthocladius diversus (Wulp, 1874)
Orthocladius divisus (Kieffer, 1921)
Orthocladius doloplastoides (Lundstrom & Frey, 1916)
Orthocladius dorenus (Roback, 1957)
Orthocladius dubitatus Johannsen, 1942
Orthocladius eurycnemoides (Edwards, 1931)
Orthocladius excavatus Brundin, 1947
Orthocladius fallax (Kieffer, 1911)
Orthocladius ferringtoni Soponis, 1983
Orthocladius filamentosus (Tokunaga, 1939)
Orthocladius filipes (Santos Abreu, 1918)
Orthocladius fissicornis Kieffer, 1906
Orthocladius flaveolus (Goetghebuer, Humphries & Fitzgerald, 1949)
Orthocladius flavopilosellus Goetghebuer, 1932
Orthocladius fluviatilis (Kieffer, 1923)
Orthocladius fossarum (Kieffer, 1909)
Orthocladius franzi (Goetghebuer, 1949)
Orthocladius frigidus (Zetterstedt, 1838)
Orthocladius fuscicauda (Kieffer, 1924)
Orthocladius fusciceps (Kieffer, 1924)
Orthocladius fusciforceps (Kieffer, 1915)
Orthocladius fuscimanus (Kieffer & Thienemann, 1908)
Orthocladius fusiformis (Goetghebuer, 1939)
Orthocladius (Eudactylocladius) gelidorum (Kieffer, 1923)
Orthocladius gelidus Kieffer, 1922
Orthocladius glabripennis (Goetghebuer, 1921)
Orthocladius glacialis (Kieffer, 1922)
Orthocladius glacicalis (Kieffer, 1922)
Orthocladius graminicola
Orthocladius grimshawi (Hardy, 1960)
Orthocladius griseicollis (Santos Abreu, 1918)
Orthocladius groenlandensis Goetghebuer, 1933
Orthocladius haesitans (Kieffer & Thienemann, 1908)
Orthocladius halvorseni Saether, 2003
Orthocladius harnischi (Kieffer, 1924)
Orthocladius harrisoni Freeman, 1961
Orthocladius hazenensis Soponis, 1977
Orthocladius hellenthali Soponis, 1977
Orthocladius heptatomus Kieffer, 1915
Orthocladius hockaiensis (Goetghebuer, 1932)
Orthocladius holsatus Goetghebuer, 1937
Orthocladius imperfectus Goetghebuer, 1944
Orthocladius inaequalis (Kieffer, 1926)
Orthocladius insigniforceps (Kieffer, 1929)
Orthocladius insolida Skuse, 1889
Orthocladius insolitus Makarchenko, 2006
Orthocladius insulanus (Kieffer, 1924)
Orthocladius italicus Marcuzzi, 1949
Orthocladius janetscheki (Goetghebuer, 1941)
Orthocladius kamihiroi Sasa & Hirabayashi, 1993
Orthocladius kamisemai Sasa & Hirabayashi, 1993
Orthocladius kanii (Tokunaga, 1939)
Orthocladius kauaiensis (Hardy, 1960)
Orthocladius kervillei (Kieffer, 1900)
Orthocladius kiefferulus (Goetghebuer & Lenz, 1943)
Orthocladius kinangopi (Kieffer, 1913)
Orthocladius knabeni Goetghebuer, 1933
Orthocladius knuthi Soponis, 1977
Orthocladius lacteipennis (Lundstrom, 1910)
Orthocladius lactescens (Goetghebuer, 1932)
Orthocladius lacustris (Kieffer, 1913)
Orthocladius lamellatus Saether, 2005
Orthocladius lapponicus Goetghebuer, 1940
Orthocladius lateralis (Walker, 1837)
Orthocladius latiforceps (Edwards, 1931)
Orthocladius lenzi (Kieffer, 1925)
Orthocladius lenzianus (Goetghebuer, 1938)
Orthocladius leucolabis (Kieffer, 1915)
Orthocladius leucura (Kieffer, 1924)
Orthocladius lignicola Kieffer, 1915
Orthocladius lineolatus (Santos Abreu, 1918)
Orthocladius littoris (Kieffer, 1925)
Orthocladius lobatipennis (Kieffer, 1918)
Orthocladius lobulifera (Goetghebuer, 1939)
Orthocladius longiradius (Kieffer, 1911)
Orthocladius lunzensis Dettinger-Klemm, 2001
Orthocladius luteibasis (Edwards, 1931)
Orthocladius luteiforceps Goetghebuer, 1935
Orthocladius luteipes Goetghebuer, 1938
Orthocladius luteus Goetghebuer, 1934
Orthocladius macrobranchia Edwards, 1928
Orthocladius macrorhynchus Kieffer, 1906
Orthocladius maius Goetghebuer, 1942
Orthocladius makabensis Sasa, 1979
Orthocladius mallochi Kieffer, 1919
Orthocladius manitobensis Saether, 1969
Orthocladius marchettii Rossaro, 1991
Orthocladius marginatus (Lundstrom, 1915)
Orthocladius mariellae Rossaro, 1991
Orthocladius masseinii Rossaro & Pietrangelo, 1992
Orthocladius mauiensis (Hardy, 1960)
Orthocladius maurus (Kieffer, 1918)
Orthocladius megalochirus (Kieffer, 1911)
Orthocladius melanosoma (Goetghebuer, 1934)
Orthocladius membranisensoria (Hardy, 1960)
Orthocladius membranisesoria Hardy, 1960
Orthocladius merdionalis (Goetghebuer, 1939)
Orthocladius microtomus (Kieffer, 1923)
Orthocladius minutus (Goetghebuer, 1934)
Orthocladius mitisi Goetghebuer, 1938
Orthocladius monticola (Kieffer, 1919)
Orthocladius multidentatus Zelentsov, 1991
Orthocladius murvanidzei (Chernovskij, 1949)
Orthocladius musester Saether, 2004
Orthocladius nagaokensis Tokunaga, 1964
Orthocladius nanseni Kieffer, 1926
Orthocladius nigripectus (Bigot, 1888)
Orthocladius nigripes (Kieffer, 1911)
Orthocladius nigritellus Goetghebuer, 1949
Orthocladius nigritus Malloch, 1915
Orthocladius nigroplotus Chaudhuri & Ghosh, 1982
Orthocladius nilicola (Kieffer, 1923)
Orthocladius nimidens Saether, 2005
Orthocladius nitidiscutellatus (Lundstrom, 1915)
Orthocladius (Orthocladius) nitidoscutellatus Lundstroem, 1915
Orthocladius niveiforceps Kieffer, 1924
Orthocladius nivicola (Kieffer, 1924)
Orthocladius nivium (Kieffer, 1924)
Orthocladius nivosus (Kieffer, 1924)
Orthocladius novaesemliae Kieffer, 1922
Orthocladius novostylus Chaudhuri & Ghosh, 1982
Orthocladius nudipennis (Goetghebuer, 1949)
Orthocladius nudisquama (Chernovskij, 1949)
Orthocladius nudus Chaudhuri & Ghosh, 1982
Orthocladius numerosus Skuse, 1889
Orthocladius nympha (Kieffer, 1911)
Orthocladius oahuensis (Hardy, 1960)
Orthocladius oblidens (Walker, 1856)
Orthocladius obumbratus Johannsen, 1905
Orthocladius olivaceus (Kieffer, 1911)
Orthocladius oliveri Soponis, 1977
Orthocladius oriplanus (Kieffer, 1911)
Orthocladius ottilianus (Kieffer, 1925)
Orthocladius overmeirensis Goetghebuer, 1932
Orthocladius oxyrhynchus Linevich, 1963
Orthocladius palestinae Goetghebuer, 1934
Orthocladius pallidicornis (Lundstrom, 1915)
Orthocladius paluster (Kieffer, 1924)
Orthocladius paraconjucta Hardy, 1960
Orthocladius patagonicus (Edwards, 1931)
Orthocladius pedestris Kieffer, 1909
Orthocladius perpusillus Enderlein, 1912
Orthocladius pictipennis Freeman, 1959
Orthocladius pinderi Rossaro, 1991
Orthocladius ploenensis (Kieffer, 1921)
Orthocladius pretorianus (Kieffer, 1918)
Orthocladius priomixtus Saether, 2004
Orthocladius publicus (Hutton, 1902)
Orthocladius pulchellus (Kieffer, 1924)
Orthocladius pulchralis (Santos Abreu, 1918)
Orthocladius pullulus Skuse, 1889
Orthocladius rachelae Rossaro, 1991
Orthocladius rarus Linevich, 2002
Orthocladius reductus Freeman, 1954
Orthocladius reofilus Linevich, 1963
Orthocladius rivalris (Strol, 1945)
Orthocladius rivicola Kieffer, 1921
Orthocladius rivinus Kieffer, 1915
Orthocladius rivulorum Kieffer, 1909
Orthocladius robacki Soponis, 1977
Orthocladius roussellae Soponis, 1990
Orthocladius rubicundus (Meigen, 1818)
Orthocladius ruffoi Rossaro, 1991
Orthocladius saetheri Jacobsen, 2007
Orthocladius sahorensis (Kieffer, 1926)
Orthocladius sakhalinensis Makarchenko, 2006
Orthocladius sanctibenedicti (Kieffer, 1913)
Orthocladius saxicola Kieffer, 1911
Orthocladius saxosus (Tokunaga, 1939)
Orthocladius scaturiginis (Goetghebuer, 1940)
Orthocladius (Symposiocladius) schnelli Saether, 2004
Orthocladius seiryugeheus Sasa, Suzuki & Sakai, 1998
Orthocladius septris (Roback, 1957)
Orthocladius setilobus Marcuzzi, 1949
Orthocladius setosinervis (Kieffer, 1911)
Orthocladius setosus Makarchenko, 2006
Orthocladius severini (Goetghebuer, 1939)
Orthocladius silesiacus Kieffer, 1921
Orthocladius smolandicus Brundin, 1947
Orthocladius sordens (Johannsen, 1905)
Orthocladius sphagnorum (Kieffer, 1924)
Orthocladius spitzbergensis Kieffer & Thienemann, 1919
Orthocladius stadleri (Kieffer, 1925)
Orthocladius stagnicola Goetghebuer, 1948
Orthocladius strandi (Lundstrom, 1913)
Orthocladius stuckenbergi Freeman, 1961
Orthocladius subglaber (Kieffer, 1921)
Orthocladius subletteorum Cranston, 1999
Orthocladius subletti Soponis, 1977
Orthocladius succineus (Goetghebuer, 1942)
Orthocladius suspensus (Tokunaga, 1939)
Orthocladius tamanitidus Sasa, 1981
Orthocladius tamaputridus Sasa, 1981
Orthocladius tamarutilus Sasa, 1981
Orthocladius teletskensis (Lipina, 1949)
Orthocladius (Euorthocladius) telochaetus Langton, 1985
Orthocladius tenuiventris (Kieffer, 1924)
Orthocladius terricola (Kieffer, 1919)
Orthocladius tetrachaetus (Kieffer, 1915)
Orthocladius thienemanni Kieffer & Thienemann, 1906
Orthocladius ticinoi Rossaro, 1991
Orthocladius timoni (Goetghebuer, 1939)
Orthocladius tolleti (Goetghebuer, 1944)
Orthocladius tornetraskensis Edwards, 1941
Orthocladius traenis
Orthocladius tridentiger Kieffer, 1925
Orthocladius trifidus (Kieffer, 1921)
Orthocladius trifurcatus (Goetghebuer & Lenz, 1943)
Orthocladius trigonolabis Edwards, 1924
Orthocladius tunisiae (Kieffer, 1918)
Orthocladius turficola Kieffer, 1924
Orthocladius tusimoopeus Sasa & Suzuki, 1999
Orthocladius tusimopequeus Sasa & Suzuki, 1999
Orthocladius ulaanbaatus Sasa & Suzuki, 1997
Orthocladius umbraticus (Santos Abreu, 1918)
Orthocladius uniradialis Bhattacharyay, 1991
Orthocladius vaillanti Langton & Cranston, 1991
Orthocladius vanoyei (Goetghebuer, 1944)
Orthocladius viator (Kieffer & Kieffer, 1916)
Orthocladius vicinus (Santos Abreu, 1918)
Orthocladius virendri Singh, 1958
Orthocladius wetterensis Brundin, 1956
Orthocladius wiensi Saether, 1969
Orthocladius williamsi (Hardy, 1960)
Orthocladius wirthi (Hardy, 1960)
Orthocladius xethis
Orthocladius yosii (Tokunaga, 1964)
Orthocladius yugashimaensis Sasa, 1979