# List of Trechus species

This is a list of species in Trechus, a genus of beetles in the family Carabidae.
The genus Trechus contains the following species:
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## A

* Trechus abakumovi Belousov & Kabak, 1996
* Trechus abalkhasimi J.Schmidt & Faille, 2018
* Trechus abdurakhmanovi Belousov, 1990
* Trechus abeillei Pandellé, 1872
* Trechus academiae Deuve, 1992
* Trechus achillecasalei Deuve, 1998
* Trechus acuticollis Sciaky & Pavesi, 1994
* Trechus adaba J.Schmidt & Faille, 2018
* Trechus additus J.Schmidt, 2016
* Trechus aduncus Barr, 1962
* Trechus adustus Jeannel, 1962
* Trechus aedeagalis J.Schmidt, 2009
* Trechus aethiopicus Alluaud, 1918
* Trechus aghiazicus Belousov & Kabak, 2019
* Trechus agni Deuve & Queinnec, 1985
* Trechus agouzicus Deuve & Queinnec, 1992
* Trechus akibensis Belousov, 1990
* Trechus akkusianus Donabauer, 2006
* Trechus aksuensis Belousov & Kabak, 1996
* Trechus alajensis Belousov & Kabak, 1994
* Trechus alanicus Belousov, 1990
* Trechus albanicus Apfelbeck, 1905
* Trechus algiricus Jeannel, 1922
* Trechus alicantinus Español, 1971
* Trechus alinae Dajoz, 1990
* Trechus almonius Reitter, 1903
* Trechus alpicola Sturm, 1825
* Trechus alpigradus Reitter, 1888
* Trechus alticola Wollaston, 1854
* Trechus altitudinum Deuve, 2004
* Trechus amasraensis Donabauer, 2004
* Trechus ambarasensis Jeannel, 1954
* Trechus amblus Jeannel, 1935
* Trechus amblygonellus Jeannel, 1964
* Trechus amblygonus Jeannel, 1935
* Trechus ambrolauricus Belousov, 1989
* Trechus amharicus Ortuño & Novoa, 2011
* Trechus amicorum P.Moravec & Wrase, 1998
* Trechus amplicollis Fairmaire, 1859
* Trechus anae Morvan, 1982
* Trechus andreinii Jeannel, 1921
* Trechus angavoensis J.Schmidt & Faille, 2018
* Trechus angelae Magrini, 1984
* Trechus angelicae Reitter, 1892
* Trechus angulifer Belousov & Kabak, 1992
* Trechus angusticeps Apfelbeck, 1904
* Trechus angusticollis Kiesenwetter, 1850
* Trechus anichtchenkoi Toribio, 2012
* Trechus animosus Jeannel, 1962
* Trechus anjuensis Deuve, 1998
* Trechus antonii Jeannel, 1936
* Trechus antonini Deuve, 1998
* Trechus apache Dajoz, 1990
* Trechus apicalis Motschulsky, 1845
* Trechus apoduvalipenis Salgado & Ortuño, 1998
* Trechus apusenicus P.Moravec, 1986
* Trechus aquilus Jeannel, 1962
* Trechus arambourgi Jeannel, 1935
* Trechus arizonae Casey, 1918
* Trechus armenus Iablokoff-Khnzorian, 1963
* Trechus arnoldii Belousov, 1987
* Trechus arrecheai Ortuño; Gilgado & Cuesta, 2014
* Trechus arribasi Jeanne, 1988
* Trechus arshanicus Belousov & Kabak, 2001
* Trechus artemisiae Putzeys, 1872
* Trechus arthuri P.Moravec & Lompe in Löbl & Smetana, 2003
* Trechus asiaticus Jeannel, 1927
* Trechus assingi Lompe, 1999
* Trechus astrophilus J.Schmidt, 2009
* Trechus atomus P.Moravec & Wrase, 1998
* Trechus aubei Pandellé, 1867
* Trechus aubryi Coiffait, 1953
* Trechus aurouxi (Mateu & Comas, 2006)
* Trechus austriacus Dejean, 1831
* Trechus avgolensis Belousov & Kabak, 1998
* Trechus aztec Jeannel, 1920
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## B

* Trechus babaensis Lompe, 2015
* Trechus babaulti Jeannel, 1935
* Trechus babinjensis Jeannel, 1927
* Trechus badius Jeannel, 1960
* Trechus badzhalicus Plutenko, 2004
* Trechus bajankoli Belousov & Kabak, 1992
* Trechus bakeri Jeannel, 1923
* Trechus bakurovi Shilenkov, 1984
* Trechus baleensis (Basilewsky, 1974)
* Trechus balesilvestris J.Schmidt & Faille, 2018
* Trechus balfourbrownei Ueno, 1965
* Trechus balkaricus Belousov, 1990
* Trechus balsamensis Barr, 1962
* Trechus bannaticus Dejean, 1831
* Trechus barahbisensis Deuve, 1988
* Trechus barbaritae Donabauer, 2004
* Trechus barberi (Jeannel, 1931)
* Trechus barii Focarile, 1949
* Trechus barnevillei Pandellé, 1867
* Trechus barratxinai Español, 1971
* Trechus basarukini P.Moravec & Wrase, 1997
* Trechus basilewskianus Geginat, 2008
* Trechus basilewskyi Jeannel, 1960
* Trechus baskonicus Belousov & Kabak, 1996
* Trechus bastianinii Magrini & Sciaky, 2006
* Trechus bastropi J.Schmidt, 2009
* Trechus batuensis Magrini & Sciaky, 2006
* Trechus batyr Belousov & Kabak, 1992
* Trechus bayanbulak Deuve, 1993
* Trechus baztanensis Dupré, 1991
* Trechus beatus Reitter, 1903
* Trechus bedeli Jeannel, 1922
* Trechus beesoni Jeannel, 1930
* Trechus beghinorum Belousov & Kabak, 1992
* Trechus beieri Winkler, 1936
* Trechus belovi Belousov & Kabak, 1996
* Trechus beltrani Toribio, 1990
* Trechus benahoaritus Machado, 1989
* Trechus benesi Deuve, 1993
* Trechus bensai Jeannel, 1927
* Trechus besucheti Pawlowski, 1977
* Trechus besuchetianus Deuve, 1987
* Trechus beusti (L.Schaufuss, 1863)
* Trechus bhadarwahensis Deuve, 1982
* Trechus bhutanicus Ueno, 1977
* Trechus bianericus Belousov & Kabak, 2020
* Trechus bibulus Lompe, 1999
* Trechus biharicus Meixner, 1912
* Trechus binotatus Putzeys, 1870
* Trechus bipartitus Raffray, 1886
* Trechus bodemeyeri Reitter, 1913
* Trechus bogatshevi Belousov, 1987
* Trechus bogdani Belousov & Kabak, 2000
* Trechus bogdoensis Belousov & Kabak, 2001
* Trechus boghinorum Belousov & Kabak, 1992
* Trechus bohaci P.Moravec, 1987
* Trechus bohemorum Pawlowski, 1973
* Trechus boleslavi Belousov & Kabak, 2000
* Trechus boludagensis Donabauer, 2006
* Trechus bombi J.Schmidt & Faille, 2018
* Trechus bonvouloiri Pandellé, 1867
* Trechus bordei Peyerimhoff, 1909
* Trechus bosnicus Ganglbauer, 1891
* Trechus boudikae Morvan, 1982
* Trechus bouilloni Faille; Bourdeau & Fresneda, 2012
* Trechus boulbeni Deuve, 1998
* Trechus bourdeaui Fresneda; Valenzuela & Faille, 2015
* Trechus bowlingi Barr, 1962
* Trechus bradycelliformis Csiki, 1906
* Trechus brancuccii Deuve, 2006
* Trechus brendelli Deuve, 2005
* Trechus breuili Jeannel, 1913
* Trechus breuningi Morvan, 1972
* Trechus brevicaudis Belousov & Kabak, 1993
* Trechus brevicorpus Belousov & Kabak, 1993
* Trechus brezinai Deuve & Queinnec, 1992
* Trechus bruckii Fairmaire, 1862
* Trechus bruckoides Faille; Bourdeau & Fresneda, 2012
* Trechus buahitensis Jeannel, 1954
* Trechus budhaensis J.Schmidt, 2009
* Trechus byzantinus Apfelbeck, 1901
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## C

* Trechus cabrerai (Jeannel, 1936)
* Trechus calashensis Deuve, 1982
* Trechus caliginis Barr, 1985
* Trechus cameroni Jeannel, 1923
* Trechus cantalicus Fauvel, 1888
* Trechus cappadocicus Pawlowski, 1976
* Trechus caprai Jeannel, 1927
* Trechus cardioderus Putzeys, 1870
* Trechus carilloi Toribio & Rodriguez, 1997
* Trechus carnioliae G.Müller, 1921
* Trechus carolinae Schaeffer, 1901
* Trechus carpaticus Rybinski, 1902
* Trechus caspiricus Deuve, 1982
* Trechus catensis Donabauer, 2013
* Trechus cathaicus Sciaky & Pavesi, 1995
* Trechus caucasicus Chaudoir, 1846
* Trechus cautus Wollaston, 1854
* Trechus cavernicola J.Frivaldszky, 1881
* Trechus ceballosi Mateu, 1953
* Trechus centralis Nonveiller; Pavicevic & Popovic, 1994
* Trechus cephalonicus Winkler, 1914
* Trechus cephalotellus Belousov in Kryzhanovskij et al., 1995
* Trechus ceresai Binaghi, 1938
* Trechus chalybeus Dejean, 1831
* Trechus championi Jeannel, 1920
* Trechus changbaicola Deuve, 2017
* Trechus chappuisi Jeannel, 1935
* Trechus cheoahensis Donabauer, 2005
* Trechus chiguguanensis Belousov & Kabak, 2020
* Trechus chillalicus Jeannel, 1936
* Trechus chodjaii Morvan, 1974
* Trechus chokensis Pawlowski, 2002
* Trechus cholaensis Deuve, 1996
* Trechus chormaensis Deuve, 1993
* Trechus christinae J.Schmidt, 2016
* Trechus cifrianae Ortuño & Jimenez-Valverde, 2011
* Trechus clarkeianus (Basilewsky, 1974)
* Trechus claudiae Deuve, 1996
* Trechus clingmanensis Donabauer, 2005
* Trechus coelestis Sciaky & Pavesi, 1994
* Trechus colobus J.Schmidt & Faille, 2018
* Trechus coloradensis Schaeffer, 1915
* Trechus comasi Hernando, 2002
* Trechus compactulus Belousov & Kabak, 1996
* Trechus compsus Jeannel, 1935
* Trechus concinnus Tschitscherine, 1904
* Trechus concoloratus Lorenz, 1998
* Trechus conformis Jeannel, 1927
* Trechus confusatorius Deuve & Kaiser, 2009
* Trechus consobrinus K. & J.Daniel, 1898
* Trechus constrictus Schaum, 1860
* Trechus controversus Binaghi, 1959
* Trechus coweensis Barr, 1979
* Trechus crassiscapus Lindroth, 1955
* Trechus cratocephalus Belousov & Kabak, 2019
* Trechus croaticus Dejean, 1831
* Trechus croceus Fresneda; Valenzuela; Bourdeau & Faille, 2019
* Trechus crucifer Piochard de la Brûlerie, 1876
* Trechus cryobius Jeannel, 1935
* Trechus cryptophilus Belousov & Kabak, 1992
* Trechus culminicola Jeannel, 1936
* Trechus cumberlandus Barr, 1962
* Trechus cuniculorum Mequignon, 1921
* Trechus curticollis Fairmaire, 1866
* Trechus curvatilis Belousov & Kabak, 1998
* Trechus cuspis Belousov & Kabak, 2020
* Trechus custos Wollaston, 1854
* Trechus cyclomus Jeannel, 1954
* Trechus cyprinus Franz, 1987
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## D

* Trechus dabanensis Sciaky & Pavesi, 1994
* Trechus dabanshanicola Deuve, 2011
* Trechus dacatraianus Deuve, 1996
* Trechus dakushitaicus Deuve, 2004
* Trechus damchungensis Deuve, 1998
* Trechus danieli Holdhaus, 1902
* Trechus daoensis Belousov & Kabak, 2001
* Trechus davanensis Sciaky & Pavesi, 1994
* Trechus davidiani Belousov, 1990
* Trechus davidwrasei Donabauer, 2007
* Trechus dayanae Assmann & Wrase, 2012
* Trechus debilis Wollaston, 1871
* Trechus decolor Jeannel, 1938
* Trechus degienensis Jeannel, 1954
* Trechus delarouzeei Pandellé, 1867
* Trechus delhermi Saulcy, 1880
* Trechus deliae Morvan, 1971
* Trechus demircapicus P.Moravec, 1986
* Trechus demissus Jeannel, 1962
* Trechus densicornis (Fischhuber, 1977)
* Trechus depressipenis Sciaky & Pavesi, 1995
* Trechus depressipennis J.Schmidt & Faille, 2018
* Trechus deqenensis Deuve, 2017
* Trechus detersus Wollaston, 1864
* Trechus dichrous Reitter, 1911
* Trechus diecki Putzeys, 1870
* Trechus dilizhanicus Belousov, 1989
* Trechus dilutus Wollaston, 1854
* Trechus dimorphicus Pawlowski, 2002
* Trechus diogenes Pawlowski, 1979
* Trechus dioscuricus Belousov, 1990
* Trechus distigma Kiesenwetter, 1851
* Trechus distinctus Fairmaire & Laboulbène, 1854
* Trechus djebalicus (Comas & Mateu, 2008)
* Trechus djebelgloubensis Quéinnec & Ollivier, 2013
* Trechus doderoi Jeannel, 1927
* Trechus dodola J.Schmidt & Faille, 2018
* Trechus dolomitanus Jeannel, 1931
* Trechus donabaueri Lebenbauer, 2004
* Trechus dongola J.Schmidt, 2016
* Trechus dongulaensis J.Schmidt, 2009
* Trechus dostali Donabauer, 2007
* Trechus dromai J.Schmidt, 2016
* Trechus dubitans Reitter, 1903
* Trechus dudkorum Belousov & Kabak, 1996
* Trechus dulat Belousov & Kabak, 1992
* Trechus dumitrescui Decou, 1959
* Trechus duvalioides Deuve, 2004
* Trechus dzermukensis Iablokoff-Khnzorian, 1963
* Trechus dzhalair Belousov & Kabak, 1994
* Trechus dzhungaricus Belousov & Kabak, 1992
* Trechus dzykhvensis Belousov, 1990
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## E

* Trechus echarouxi Ollivier & Queinnec, 2011
* Trechus egorovi Belousov & Kabak, 1996
* Trechus egregius Jeannel, 1927
* Trechus elburzensis Morvan, 1974
* Trechus elegans Putzeys, 1847
* Trechus elgonicus Jeannel, 1930
* Trechus elongatulus Putzeys, 1870
* Trechus enedaphos Fresneda; Valenzuela; Bourdeau & Faille, 2019
* Trechus enigmaticus Coiffait, 1971
* Trechus enoploides Jeannel, 1954
* Trechus enoplus Jeannel, 1935
* Trechus epirotes Colas, 1957
* Trechus eremita J.Schmidt, 2009
* Trechus ericalis Magrini; Queinnec & Vigna Taglianti, 2013
* Trechus erythrostomus Deuve, 1987
* Trechus escalerae Abeille de Perrin, 1903
* Trechus espanyoli (Mateu & Escola, 2006)
* Trechus eutrechoides Deuve, 1992
* Trechus exilipenis Belousov & Kabak, 1994
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## F

* Trechus fadriquei (Mateu & Escola, 2006)
* Trechus fairmairei Pandellé, 1867
* Trechus felix Wollaston, 1864
* Trechus ferghanicus Belousov & Kabak, 1992
* Trechus fischtensis Reitter, 1888
* Trechus fisehai J.Schmidt & Faille, 2018
* Trechus flavocinctus Jeannel, 1922
* Trechus flavocircumdatus Jeannel, 1922
* Trechus flavolimbatus Wollaston, 1863
* Trechus flavomarginatus Wollaston, 1854
* Trechus focarilei Monguzzi, 1998
* Trechus folwarcznyi Deuve, 1998
* Trechus fongondi Deuve & Queinnec, 1983
* Trechus fontinalis Rybinski, 1901
* Trechus fortimanus Reitter, 1903
* Trechus fortunatus Jeannel, 1927
* Trechus franzianus Mateu & Deuve, 1979
* Trechus franzschuberti Donabauer, 2006
* Trechus frater J.Schmidt, 2016
* Trechus frigophilus J.Schmidt, 2016
* Trechus fritzbeneschi Donabauer, 2006
* Trechus fubianensis Deuve, 2009
* Trechus fulvatilis Belousov & Kabak, 1998
* Trechus fulvus Dejean, 1831
* Trechus fusculus Motschulsky, 1850
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## G

* Trechus gagrensis Jeannel, 1927
* Trechus galianus Belousov, 1989
* Trechus galicicaensis B.V.Gueorguiev & Hristovski, 2010
* Trechus gallaecus Jeannel, 1921
* Trechus gallorites Jeannel, 1936
* Trechus gamae Reboleira & Serrano, 2009
* Trechus gansuensis Deuve & Queinnec, 1993
* Trechus gemaensis Belousov & Kabak, 2020
* Trechus genevanorum Pawlowski, 1977
* Trechus gigas Pawlowski, 2002
* Trechus gigoni (Casale, 1982)
* Trechus gitzeni Belousov & Kabak, 2001
* Trechus glabratus J.Schmidt, 2009
* Trechus glacialis Heer, 1837
* Trechus glebi Belousov & Kabak, 2019
* Trechus gloriensis Jeanne, 1971
* Trechus goebli Breit, 1914
* Trechus goelkoeyensis Donabauer, 2013
* Trechus goidanichi Focarile & Casale, 1978
* Trechus goliath Belousov & Kabak, 1992
* Trechus golovatchi Casale, 1983
* Trechus gomerensis Franz, 1986
* Trechus gongshanensis Deuve & Kavanaugh, 2016
* Trechus gorkhai J.Schmidt, 1998
* Trechus gracilitarsis K. & J.Daniel, 1898
* Trechus gradloni Morvan, 1982
* Trechus grandiceps Reitter, 1885
* Trechus grandipennis J.Schmidt & Faille, 2018
* Trechus grandis Ganglbauer, 1891
* Trechus gravidus Putzeys, 1870
* Trechus grenieri Pandellé, 1867
* Trechus groubei (Antoine, 1936)
* Trechus guangaishanus Belousov & Kabak, 2001
* Trechus gugheensis Jeannel, 1950
* Trechus gulickai Löbl, 1967
* Trechus gurungi J.Schmidt, 1998
* Trechus gusevi Belousov, 1990
* Trechus gushensis Belousov & Kabak, 1998
* Trechus gwiomarchi Morvan, 1982
* Trechus gyalmo J.Schmidt, 2016
* Trechus gyalpo J.Schmidt, 2016
* Trechus gyatsola J.Schmidt, 2016
* Trechus gypaeti Vigna Taglianti & Magrini, 2009
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## H

* Trechus habaicus Deuve, 2011
* Trechus habashanensis Deuve, 2017
* Trechus hagenia J.Schmidt & Faille, 2018
* Trechus haggei J.Schmidt & Faille, 2018
* Trechus hajeki Reitter, 1913
* Trechus hampei Ganglbauer, 1891
* Trechus hangaicus Shilenkov, 1982
* Trechus haoe Barr, 1979
* Trechus haoeleadensis Donabauer, 2005
* Trechus harenna J.Schmidt & Faille, 2018
* Trechus harryi J.Schmidt & Faille, 2018
* Trechus hauseri Jeannel, 1962
* Trechus heinzianus Pawlowski, 1979
* Trechus hemsinensis Donabauer, 2013
* Trechus hendrichsi Mateu, 1974
* Trechus heniochicus Ljovuschkin, 1970
* Trechus hiekei J.Schmidt, 2016
* Trechus himalensis Deuve & Queinnec, 1985
* Trechus hingstoni Jeannel, 1928
* Trechus hodeberti Deuve, 1998
* Trechus holzun Shilenkov & Sokolov, 1987
* Trechus hoppi Jeannel, 1927
* Trechus houzhenziensis Deuve, 2001
* Trechus howellae Barr, 1979
* Trechus humboldti Van Dyke, 1945
* Trechus hummleri Jeannel, 1927
* Trechus hurrita Pavesi & Sciaky, 1990
* Trechus huzhubeiensis Deuve, 2011
* Trechus hydropicus G.Horn, 1883
* Trechus hylonomellus Lorenz, 1998
* Trechus hyperythros Fresneda; Valenzuela; Bourdeau & Faille, 2019
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## I

* Trechus iblanensis (Mateu & Escola, 2006)
* Trechus idriss Peyerimhoff, 1924
* Trechus ilgazensis Donabauer, 2004
* Trechus ilgazicus Pawlowski, 1976
* Trechus illyricus Jeannel, 1921
* Trechus imaicus Jeannel, 1923
* Trechus imereticus Belousov, 1990
* Trechus impunctus Casale, 1979
* Trechus imurai Ueno, 1999
* Trechus incisipenis Belousov & Kabak, 1999
* Trechus incola Peyerimhoff, 1909
* Trechus indicus Putzeys, 1870
* Trechus indicusoides Deuve, 2005
* Trechus inexpectatus Barr, 1985
* Trechus inexspectatus Belousov & Kabak, 2001
* Trechus infuscatus Chaudoir, 1850
* Trechus insolitus K.Daniel in K. & J.Daniel, 1906
* Trechus insubricus K. & J.Daniel, 1898
* Trechus iranicus Morvan & Pawlowski, 1977
* Trechus irenis Csiki, 1912
* Trechus iricolor Sciaky & Pavesi, 1995
* Trechus iridescens J.Schmidt & Faille, 2018
* Trechus irkeshtamicus Belousov & Kabak, 1998
* Trechus irritus Jeannel, 1960
* Trechus isabelae Borges & Serrano, 2007 (Cave ground-beetle)
* Trechus isfanensis Belousov & Kabak, 1998
* Trechus ispulensis Belousov & Kabak, 1992
* Trechus italicus K. & J.Daniel, 1898
* Trechus ithae Reitter, 1888
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## J

* Trechus jadodraconis Deuve, 1995
* Trechus jaechi Donabauer, 2006
* Trechus janaki P.Moravec, 1993
* Trechus janatai Belousov & Kabak, 2000
* Trechus jarrigei Morvan, 1972
* Trechus jeannei Sciaky, 1998
* Trechus jezerensis Apfelbeck, 1908
* Trechus jiuhensis Deuve & Liang, 2015
* Trechus jiuzhaiensis Deuve, 1998
* Trechus jorgensis Oromi & Borges, 1991 (Cave ground-beetle)
* Trechus jugivagus Lutshnik, 1930
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## K

* Trechus kabakovi Pawlowski, 1978
* Trechus kabylicus Casale, 1983
* Trechus kackardagi Pawlowski, 1978
* Trechus kaikanicus Belousov & Kabak, 1994
* Trechus kalabi Deuve & Queinnec, 1993
* Trechus kalabianus Deuve, 1993
* Trechus kangchenjunga J.Schmidt, 2016
* Trechus kantegiricus Belousov & Kabak, 1994
* Trechus karadenizus Pawlowski, 1976
* Trechus karasibensis Belousov & Kabak, 1994
* Trechus karlykensis Belousov & Kabak, 2001
* Trechus kashensis Belousov & Kabak, 2001
* Trechus kashgarensis Deuve, 1992
* Trechus kataevi Belousov, 1987
* Trechus katranicus Belousov & Kabak, 1996
* Trechus kaznakovi Jeannel, 1935
* Trechus keithi Ollivier; Pavicevic & Queinnec, 2008
* Trechus ketmenicus Belousov & Kabak, 1993
* Trechus kezadonicus Belousov, 1989
* Trechus khalabicus Belousov, 1990
* Trechus khaledicus Belousov, 1990
* Trechus khnzoriani Pawlowski, 1976
* Trechus khorgosicus Belousov & Kabak, 1994
* Trechus kiapazicus Belousov, 1990
* Trechus kimak Belousov & Kabak, 1996
* Trechus kobingeri Apfelbeck, 1902
* Trechus kocheri Paulian & Villiers, 1939
* Trechus kodoricus Belousov, 1989
* Trechus kokzhotensis Belousov & Kabak, 1996
* Trechus komarovi Belousov, 1990
* Trechus korae J.Schmidt, 2009
* Trechus korbi Reitter, 1903
* Trechus korotyaevi Shilenkov, 1982
* Trechus korrigani Morvan, 1982
* Trechus korzhun Belousov & Kabak, 1994
* Trechus kovali Belousov, 1989
* Trechus kozlovi Jeannel, 1935
* Trechus krasnovi Belousov & Kabak, 1992
* Trechus krejcii Deuve & Queinnec, 1985
* Trechus kricheldorffi Wagner, 1913
* Trechus kucerai Deuve, 2011
* Trechus kukunoricus Belousov & Kabak, 2000
* Trechus kulpensis Belousov & Kabak, 1998
* Trechus kuraicus Shilenkov, 1995
* Trechus kurbatovi Belousov & Kabak, 2000
* Trechus kurentzovi Lafer, 1989
* Trechus kurnakovi Jeannel, 1960
* Trechus kushtaicus Belousov & Kabak, 2001
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## L

* Trechus labrangensis Belousov & Kabak, 2000
* Trechus labruleriei Jeannel, 1921
* Trechus laevipes Jeannel, 1927
* Trechus lailensis Belousov, 1989
* Trechus lallemantii Fairmaire, 1859
* Trechus lama J.Schmidt, 2009
* Trechus lamjunensis J.Schmidt, 1994
* Trechus lampros Jeannel, 1935
* Trechus laranoensis Lompe, 1999
* Trechus larisae Belousov & Kabak, 1996
* Trechus lassallei Deuve, 1981
* Trechus latebricola Kiesenwetter, 1850
* Trechus latibuli Jeannel, 1948
* Trechus latior Darlington, 1959
* Trechus latiplatus Belousov & Kabak, 1998
* Trechus latus Putzeys, 1847
* Trechus laureticola Jeannel, 1936
* Trechus lazicus Pawlowski, 1976
* Trechus lebenbaueri Donabauer, 2004
* Trechus lebretae Jeannel, 1960
* Trechus lederi Putzeys, 1878
* Trechus ledouxianus Mateu & Deuve, 1979
* Trechus legorskyi Donabauer, 2013
* Trechus leleupi Jeannel, 1954
* Trechus lencinai (Mateu & Ortuño, 2006)
* Trechus lepineyi Paulian & Villiers, 1939
* Trechus lepontinus Ganglbauer, 1891
* Trechus letshkhumicus Belousov, 1989
* Trechus levillaini Morvan, 1982
* Trechus lgockii Pawlowski, 1978
* Trechus lhasaensis J.Schmidt, 2016
* Trechus libanensis Piochard de la Brûlerie, 1876
* Trechus liguricus Jeannel, 1921
* Trechus lijiangensis Belousov & Kabak, 2001
* Trechus limacodes Dejean, 1831
* Trechus lindbergi Coiffait, 1962
* Trechus linxiaicus Deuve, 2005
* Trechus liochrous Jeannel, 1935
* Trechus liopleurus Chaudoir, 1850
* Trechus litangensis Deuve, 1995
* Trechus loebli Pawlowski, 1977
* Trechus loeblianus Deuve, 1988
* Trechus loeffleri Magrini & Sciaky, 2006
* Trechus lomakini Belousov & Kabak, 1994
* Trechus longicollis Meixner, 1912
* Trechus longulus K. & J.Daniel, 1898
* Trechus lucidus Jeannel, 1960
* Trechus luculentus Barr, 1962
* Trechus lunai Reboleira & Serrano, 2009
* Trechus lundbladi Jeannel, 1938
* Trechus luquensis Belousov & Kabak, 2000
* Trechus lusitanicus Jeannel, 1921
* Trechus luteolus Jeannel, 1960
* Trechus lutshniki Belousov, 1987
* Trechus luzhangensis Deuve & Liang, 2016
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## M

* Trechus maceki Deuve, 1992
* Trechus machadoensis Franz, 1984
* Trechus machadoi Jeannel, 1941
* Trechus machardi Jeanne, 1976
* Trechus maculicornis Chaudoir, 1846
* Trechus maderensis Csiki, 1928
* Trechus magistrettii Focarile, 1949
* Trechus magniceps Reitter, 1898
* Trechus maisaicus Belousov & Kabak, 1994
* Trechus majusculus K.Daniel, 1902
* Trechus mallaszianus P.Moravec & Lompe in Löbl & Smetana, 2003
* Trechus mandarinus Sciaky & Pavesi, 1995
* Trechus manensis Belousov & Kabak, 1994
* Trechus manzhangicus Deuve, 2004
* Trechus maomao Deuve, 2005
* Trechus maoniu Belousov & Kabak, 2020
* Trechus maowenensis Deuve, 1995
* Trechus maqenicus Deuve, 2004
* Trechus maquensis Deuve, 2004
* Trechus marcilhaci Pham, 1987
* Trechus marcilhacianus Deuve, 2004
* Trechus margelanicus Belousov & Kabak, 1998
* Trechus marginalis Schaum in Kraatz, 1862
* Trechus maritimus Sainte-Claire Deville, 1907
* Trechus markakolensis Belousov & Kabak, 1999
* Trechus martelluccii Magrini & Sciaky, 2006
* Trechus martensi Deuve & Hodebert, 1991
* Trechus martinae J.Schmidt, 2009
* Trechus martinezi Jeannel, 1927
* Trechus matejkai Vsetecka, 1938
* Trechus mateui Deuve & Queinnec, 1985
* Trechus matrismeae Pawlowski, 1972
* Trechus mattisi J.Schmidt & Faille, 2018
* Trechus mauritanicus Jeannel, 1909
* Trechus meissonnieri Belousov & Kabak, 2000
* Trechus meixnerianus P.Moravec & Lompe in Löbl & Smetana, 2003
* Trechus mekbibi J.Schmidt & Faille, 2018
* Trechus melanocephalus Kolenati, 1845
* Trechus mengensis Belousov & Kabak, 2020
* Trechus menpa J.Schmidt, 2016
* Trechus merditanus Apfelbeck, 1906
* Trechus meregallii Casale, 1983
* Trechus merenicus Belousov & Kabak, 1994
* Trechus merkli Pawlowski, 1973
* Trechus meschniggi Jeannel, 1930
* Trechus messoulii Casale, 2011
* Trechus metrius Jeannel, 1935
* Trechus meurguesianus Deuve, 1980
* Trechus michaeli Pawlowski, 1978
* Trechus micrangulus Reitter, 1913
* Trechus midas Jeannel, 1927
* Trechus mieheorum J.Schmidt, 2009
* Trechus mila J.Schmidt, 2016
* Trechus minaicus Belousov & Kabak, 1994
* Trechus mingguangensis Deuve & Liang, 2016
* Trechus minioculatus Machado, 1987
* Trechus minitrechus J.Schmidt & Faille, 2018
* Trechus minshanicola Deuve, 2004
* Trechus minyops Wollaston, 1862
* Trechus mirzayani Morvan, 1974
* Trechus mitchellensis Barr, 1962
* Trechus mitjaevi Belousov & Kabak, 1996
* Trechus moctezuma Mateu, 1974
* Trechus modestus Putzeys, 1874
* Trechus mogul Belousov & Kabak, 2001
* Trechus mongolicus P.Moravec, 1992
* Trechus mongolorum Belousov & Kabak, 1994
* Trechus montanellus Gemminger & Harold, 1868
* Trechus montanheirorum Oromi & Borges, 1991 (Cave ground-beetle)
* Trechus montanus Motschulsky, 1844
* Trechus montisarerae Focarile, 1950
* Trechus montismaiellettae Ghidini, 1932
* Trechus montisrosae Jeannel, 1921
* Trechus montreuili Deuve, 2004
* Trechus morandinii Lebenbauer, 2002
* Trechus mordkovitschi Shilenkov, 1982
* Trechus morvanellus Deuve, 1996
* Trechus morvanianus Deuve & Queinnec, 1985
* Trechus mourzinellus Deuve, 1998
* Trechus mouzaiensis Jeannel, 1922
* Trechus muguensis J.Schmidt, 2009
* Trechus murzorum Belousov & Kabak, 1994
* Trechus muscorum P.Moravec & Wrase, 1998
* Trechus myanmarensis Deuve, 2004
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## N

* Trechus nairicus Pavesi & Sciaky, 1992
* Trechus nakaguroi Ueno, 1960
* Trechus naldii Ghidini, 1932
* Trechus nami J.Schmidt, 2016
* Trechus namtsoensis J.Schmidt, 2009
* Trechus nannus Jeannel, 1935
* Trechus nantahalae Barr, 1979
* Trechus nanulus J.Schmidt & Faille, 2018
* Trechus naratensis Deuve, 1993
* Trechus narynensis Belousov & Kabak, 1992
* Trechus natmataungensis Donabauer, 2010
* Trechus navaricus (Vuillefroy, 1869)
* Trechus nebulosus Barr, 1962
* Trechus newar Deuve, 1988
* Trechus neyamensis J.Schmidt, 2016
* Trechus nezlobinskyi Hristovskyi, 2014
* Trechus nicoleae Moncoutier, 1986
* Trechus nigrans J.Schmidt, 2016
* Trechus nigrifemoralis J.Schmidt & Faille, 2018
* Trechus nigrinus Putzeys, 1847
* Trechus nigrocruciatus Wollaston, 1854
* Trechus nikolajevi Belousov & Kabak, 1992
* Trechus nivicola Chaudoir, 1846
* Trechus nomurai Ueno, 1998
* Trechus nonveilleri G.Müller, 1930
* Trechus noricus Meixner, 1911
* Trechus nothus Jeannel, 1960
* Trechus novaculosus Barr, 1962
* Trechus nugax Lompe, 1997
* Trechus numatai Ueno, 1967
* Trechus nyalamensis J.Schmidt, 2016
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## O

* Trechus obliquebasalis Breit, 1914
* Trechus obtusiusculus Ganglbauer, 1889
* Trechus obtusus Erichson, 1837
* Trechus ochreatus Dejean, 1831
* Trechus odontopeos Fresneda; Valenzuela; Bourdeau & Faille, 2019
* Trechus ofensis Donabauer, 2013
* Trechus ogouzicus Deuve & Queinnec, 1992
* Trechus oligophthalmus Jeannel, 1935
* Trechus oligops Bedel, 1896
* Trechus olympicus Piochard de la Brûlerie, 1876
* Trechus ongudaicus Belousov & Kabak, 1996
* Trechus onicus Belousov & Kabak, 1994
* Trechus oodes Jeannel, 1935
* Trechus opgenoorthi J.Schmidt, 2016
* Trechus oppositus J.Schmidt & Faille, 2018
* Trechus ordinarior Deuve & Queinnec, 1993
* Trechus orduensis Donabauer, 2007
* Trechus oregonensis Hatch, 1951
* Trechus ormayi Ganglbauer, 1891
* Trechus oromiensis Magrini; Queinnec & Vigna Taglianti, 2012
* Trechus oromii Borges; Serrano & Amorim, 2004 (Cave ground-beetle)
* Trechus orousseti (Perrault, 1982)
* Trechus orphaeus Pawlowski, 1973
* Trechus orthapicalis Belousov & Kabak, 1998
* Trechus ortizi Español, 1970
* Trechus osellai F.Battoni & Vigna Taglianti, 1994
* Trechus osmanilis K. & J.Daniel, 1902
* Trechus ossae B.V.Gueorguiev, 2010
* Trechus ovatus Putzeys, 1845
* Trechus ovipennis Motschulsky, 1845
* Trechus ovtshinnikovi Belousov & Kabak, 1992
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## P

* Trechus pachycerus Apfelbeck, 1918
* Trechus pallens Belousov & Kabak, 1994
* Trechus pallidulus Ganglbauer, 1891
* Trechus pamirensis Belousov & Kabak, 1996
* Trechus pamphylicus Jeanne, 1996
* Trechus paphlagonicus Maran, 1940
* Trechus parapandus Ortuño, 2015
* Trechus parvifrater J.Schmidt, 2016
* Trechus patrizii Jeannel, 1960
* Trechus pavlovskii Jeannel, 1962
* Trechus pecignai Toribio, 1992
* Trechus pennisii Magrini, 1984
* Trechus pereirai Borges; Serrano & Amorim, 2004 (Cave ground-beetle)
* Trechus perissus Andrewes, 1936
* Trechus perpusillus Mateu & Deuve, 1979
* Trechus perreaui Deuve & Queinnec, 1985
* Trechus pertyi Heer, 1837
* Trechus peynei Magrini & Sciaky, 2006
* Trechus phaeocerus Jeannel, 1935
* Trechus phagunensis J.Schmidt, 2016
* Trechus phami Deuve, 1981
* Trechus phanageriacus Belousov, 1990
* Trechus piazzolii Focarile, 1950
* Trechus picoensis Machado, 1988 (Cave ground-beetle)
* Trechus pieltaini Jeannel, 1920
* Trechus pilisensis Csiki, 1918
* Trechus pilonensis Toribio, 2014
* Trechus pilosicornis Deuve & Queinnec, 1993
* Trechus pilosipennis Jeannel, 1954
* Trechus pinkeri Ganglbauer, 1891
* Trechus pirinicus Pawlowski, 1972
* Trechus pisgahensis Barr, 1979
* Trechus pisuenensis Ortuño & Toribio, 2005
* Trechus placidus Jeannel, 1962
* Trechus planioculus Belousov & Kabak, 1993
* Trechus planipennis Rosenhauer, 1856
* Trechus planiusculus A.Costa, 1858
* Trechus platypterellus Belousov in Kryzhanovskij et al., 1995
* Trechus plicatulus L.Miller, 1868
* Trechus plottbalsamensis Donabauer, 2005
* Trechus pochoni Jeannel, 1939
* Trechus pohorjeensis Donabauer, 2006
* Trechus polonorum Pawlowski, 1979
* Trechus pomonae Fall, 1901
* Trechus pongensis Fresneda; Valenzuela; Bourdeau & Faille, 2019
* Trechus priapus K.Daniel, 1902
* Trechus processifer Belousov & Kabak, 1992
* Trechus promeces Jeannel, 1935
* Trechus przewalskyi Belousov & Kabak, 1993
* Trechus pseudoalmonius Deuve, 1993
* Trechus pseudoalyshensis Deuve & Queinnec, 1992
* Trechus pseudobarberi Donabauer, 2009
* Trechus pseudocholaensis Deuve, 1998
* Trechus pseudogansuensis Belousov & Kabak, 2000
* Trechus pseudokozlovi Deuve, 2011
* Trechus pseudolatus Lompe, 2011
* Trechus pseudomontanellus Rizun, 1994
* Trechus pseudonovaculosus Donabauer, 2005
* Trechus pseudopiceus K. & J.Daniel, 1898
* Trechus pseudoqiqiensis Deuve & Liang, 2016
* Trechus pseudosubtilis Donabauer, 2009
* Trechus puetzi P.Moravec & Wrase, 1998
* Trechus pulchellus Putzeys, 1845
* Trechus pulpani Reska, 1965
* Trechus pulvinipenis Belousov & Kabak, 1999
* Trechus pumilio Jeannel, 1923
* Trechus pumilus Jeannel, 1927
* Trechus pumoensis Deuve, 1998
* Trechus putchkovi Belousov & Kabak, 1996
* Trechus putzeysi Pandellé, 1867
* Trechus pyrenaeus Dejean, 1831
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## Q

* Trechus qagcaensis Deuve, 1996
* Trechus qinghaicus Deuve & Queinnec, 1993
* Trechus qingmaiensis Deuve, 2011
* Trechus qiqiensis Deuve & Kavanaugh, 2016
* Trechus quadrimaculatus Motschulsky, 1850
* Trechus quadristriatus (Schrank, 1781)
* Trechus quarelicus Belousov, 1987
* Trechus qunlaishanicus Belousov & Kabak, 2020
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## R

* Trechus raffrayanus Jeannel, 1954
* Trechus rambouseki Breit, 1909
* Trechus ramseyensis Donabauer, 2005
* Trechus rarus J.Schmidt, 2009
* Trechus ravasinianus Lorenz, 1998
* Trechus regularis Putzeys, 1870
* Trechus relictus Magrini; Queinnec & Vigna Taglianti, 2012
* Trechus religiosus J.Schmidt, 2009
* Trechus renei Belousov, 1990
* Trechus rhilensis Kaufmann, 1884
* Trechus rhodopeius Jeannel, 1921
* Trechus rhombus Belousov & Kabak, 2019
* Trechus riberai Fresneda; Valenzuela; Bourdeau & Faille, 2019
* Trechus rira J.Schmidt & Faille, 2018
* Trechus rivulis Dajoz, 2005
* Trechus roanicus Barr, 1962
* Trechus robustapicalis Belousov & Kabak, 1998
* Trechus rolwalingensis J.Schmidt, 2009
* Trechus ronchettii Reitter, 1911
* Trechus roparzhemoni Morvan, 1982
* Trechus rosenbergi Barr, 1962
* Trechus rotroui Antoine, 1934
* Trechus rotundatus Dejean, 1831
* Trechus rotundicollis (Basilewsky, 1974)
* Trechus rotundipennis (Duftschmid, 1812)
* Trechus rougemonti (Basilewsky, 1975)
* Trechus rougemontiellus Belousov, 2017
* Trechus rouxi Deuve, 1995
* Trechus rouxioides Deuve, 2005
* Trechus rubens (Fabricius, 1792)
* Trechus rudolphi Ganglbauer, 1891
* Trechus rufulus Dejean, 1831
* Trechus ruthi Jeannel, 1929
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## S

* Trechus sachalinensis Lafer, 1989
* Trechus safranboluensis Donabauer, 2004
* Trechus sagax Jeannel, 1960
* Trechus saglensis Shilenkov, 1998
* Trechus sajanensis P.Moravec, 1993
* Trechus sajuncaicus Monguzzi, 2002
* Trechus salassus Jeannel, 1927
* Trechus saluki Belousov & Kabak, 2019
* Trechus sambylensis Belousov & Kabak, 1994
* Trechus sanettii J.Schmidt & Faille, 2018
* Trechus santaluciaensis Donabauer, 2014
* Trechus satanicus Barr, 1962
* Trechus saulcyanus Csiki, 1928
* Trechus sauricus Belousov & Kabak, 1992
* Trechus saxicola Putzeys, 1870
* Trechus sbordonii Vigna Taglianti, 1967
* Trechus scapulatus Belousov & Kabak, 1993
* Trechus schaufussi Putzeys, 1870
* Trechus schaumii Pandellé, 1867
* Trechus schillhammeri Donabauer, 2006
* Trechus schimperanus Jeannel, 1954
* Trechus schmalfussi Baehr, 1983
* Trechus schoenmanni Donabauer & Lebenbauer, 2005
* Trechus schuelkei P.Moravec & Wrase, 1998
* Trechus schuhi Donabauer, 2007
* Trechus schwarzi Jeannel, 1931
* Trechus schwienbacheri Donabauer & Lebenbauer, 2003
* Trechus schyberosiae Szallies & Schüle, 2011
* Trechus sciakyellus Deuve, 2001
* Trechus scitus Jeannel, 1960
* Trechus scotti Jeannel, 1936
* Trechus sculptipennis J.Schmidt, 2009
* Trechus selaensis Deuve, 2006
* Trechus semenovi Belousov & Kabak, 1992
* Trechus sendrai (Comas & Mateu, 2008)
* Trechus seserligensis Shilenkov, 1998
* Trechus sessitanus Monguzzi, 1985
* Trechus setitemporalis Deuve, 2005
* Trechus shaanxiensis P.Moravec & Wrase, 1998
* Trechus shaid Belousov & Kabak, 1998
* Trechus shakhensis Belousov, 1987
* Trechus shangensis Belousov & Kabak, 2020
* Trechus sharpi Jeannel, 1921
* Trechus shatrovskyi Belousov & Kabak, 1994
* Trechus shchurovi Belousov & Kabak, 1996
* Trechus shibalicus Deuve & Kavanaugh, 2016
* Trechus shilenkovi Belousov & Kabak, 1992
* Trechus shinganensis Shilenkov, 1998
* Trechus shivalensis Belousov & Kabak, 1998
* Trechus shiyueliang Deuve & Liang, 2016
* Trechus sichuanus Deuve, 1988
* Trechus signatus Wollaston, 1857
* Trechus sikhotealinus Ueno & Lafer, 1994
* Trechus silveiranus Lompe, 1997
* Trechus simienensis Jeannel, 1954
* Trechus simplicens Belousov & Kabak, 1993
* Trechus singularis J.Schmidt, 2009
* Trechus sinuatus Schaum, 1860
* Trechus sinus Belousov & Kabak, 2001
* Trechus sivellae Monguzzi, 2002
* Trechus sjostedti Alluaud, 1927
* Trechus skoupyi P.Moravec & Zieris, 1998
* Trechus smetanai Deuve, 2017
* Trechus snowbirdensis Donabauer, 2005
* Trechus sodalis Jeannel, 1960
* Trechus sogdianus Belousov & Kabak, 1998
* Trechus sokolovi Belousov, 1990
* Trechus solarii Jeannel, 1921
* Trechus solhoeyi J.Schmidt, 2009
* Trechus soma Mateu & Deuve, 1979
* Trechus songoricus Belousov & Kabak, 1992
* Trechus sotshiensis Belousov, 1987
* Trechus splendens Gemminger & Harold, 1868
* Trechus stanovskyi P.Moravec, 1993
* Trechus stefanschoedli Donabauer, 2005
* Trechus stenoderus Jeannel, 1935
* Trechus stictulus Belousov & Kabak, 1998
* Trechus stipraisi Belousov & Kabak, 1992
* Trechus straneoi Jeannel, 1931
* Trechus strasseri Ganglbauer, 1891
* Trechus stratiotes J.Schmidt, 2009
* Trechus striatulus Putzeys, 1847
* Trechus stricticollis Jeannel, 1927
* Trechus strigipennis Kiesenwetter, 1861
* Trechus strongylus Jeannel, 1935
* Trechus stupkai Barr, 1979
* Trechus suan Belousov & Kabak, 1994
* Trechus subacuminatus A.Fleischer, 1898
* Trechus subcordatus Chaudoir, 1846
* Trechus sublaevis Raffray, 1886
* Trechus subnotatus Dejean, 1831
* Trechus subtilis Barr, 1962
* Trechus subzoigeicola Deuve, 2009
* Trechus suensoni Jeannel, 1957
* Trechus suluk Belousov & Kabak, 1996
* Trechus sundukovi P.Moravec & Wrase, 1997
* Trechus suopoensis Belousov & Kabak, 2020
* Trechus surkiensis Deuve, 2004
* Trechus susamyrensis Belousov & Kabak, 1992
* Trechus suturalis Putzeys, 1870
* Trechus svanicus Belousov, 1989
* Trechus sylviae Lompe, 2000
* Trechus sylviahofmannae J.Schmidt, 2017
* Trechus sylvicola K. & J.Daniel, 1898
* Trechus szujeckii Pawlowski, 1972
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## T

* Trechus taghizadehi Morvan, 1974
* Trechus talassicus Belousov & Kabak, 1992
* Trechus talequah Barr, 1962
* Trechus talgarensis Jeannel, 1927
* Trechus tamangi J.Schmidt, 1998
* Trechus tarbagataicus Belousov & Kabak, 1992
* Trechus tardokijanensis Lafer, 1989
* Trechus tatai Reboleira; Ortuño; Goncalves & Oromi, 2010
* Trechus tchibiloevi Anichtchenko, 2009
* Trechus teberdanus Jeannel, 1960
* Trechus teletskianus Belousov & Kabak, 1994
* Trechus tennesseensis Barr, 1962
* Trechus tenoensis Israelson & Palm, 1979
* Trechus tentek Belousov & Kabak, 1996
* Trechus tenuilimbatus K. & J.Daniel, 1898
* Trechus tenuiscapus Lindroth, 1961
* Trechus terceiranus Machado, 1988 (Cave ground-beetle)
* Trechus terrabravensis Borges; Serrano & Amorim, 2004 (Ground-beetle)
* Trechus terskeiensis Belousov & Kabak, 1992
* Trechus tesnensis Belousov & Kabak, 1999
* Trechus tetracoderus Gemminger & Harold, 1868
* Trechus teverganus Toribio, 2015
* Trechus tewoicus Deuve, 2009
* Trechus thai Deuve, 1995
* Trechus thaleri Franz, 1991
* Trechus thessalicus Meixner, 1928
* Trechus thessalonicus Jeannel, 1930
* Trechus thibetanus Jeannel, 1928
* Trechus thomasbarri Donabauer, 2005
* Trechus thorungiensis J.Schmidt, 1994
* Trechus thunderheadensis Donabauer, 2005
* Trechus tianchi Perreau, 1992
* Trechus tianshanivagus Deuve, 1993
* Trechus tilitshoensis J.Schmidt, 1994
* Trechus tingitanus Putzeys, 1870
* Trechus tishetshkini Belousov & Kabak, 1994
* Trechus tobiasi Donabauer, 2005
* Trechus toksanbaicus Belousov & Kabak, 1993
* Trechus tolucensis Bolivar y Pieltain, 1941
* Trechus tonitru Barr, 1962
* Trechus topaz Belousov & Kabak, 1998
* Trechus torgaut Belousov & Kabak, 2019
* Trechus toroticus Belousov & Kabak, 1996
* Trechus torrentialis Apfelbeck, 1908
* Trechus torressalai Ortuño & Arillo, 2005
* Trechus torretassoi Jeannel, 1937 (Ground-beetle)
* Trechus toxawayi Barr, 1979
* Trechus trachypachys Sciaky & Pavesi, 1995
* Trechus tragelaphus J.Schmidt & Faille, 2018
* Trechus transversicollis J.Schmidt & Faille, 2018
* Trechus triamicorum Ortuño & Jimenez-Valverde, 2011
* Trechus tristiculus K. & J.Daniel, 1898
* Trechus tsampa J.Schmidt, 2009
* Trechus tsanmensis Belousov & Kabak, 2019
* Trechus tseringi J.Schmidt, 2009
* Trechus tshildebaevi Belousov & Kabak, 1992
* Trechus tshitsherini Belousov, 1987
* Trechus tuckaleechee Barr, 1962
* Trechus tumidus Jeannel, 1921
* Trechus turgenicus Belousov & Kabak, 1994
* Trechus turkestanicus Belousov & Kabak, 1992
* Trechus turnai Deuve & Queinnec, 1993
* Trechus turnaianus Deuve, 1993
* Trechus turnaioides Deuve, 1998
* Trechus turukensis Belousov & Kabak, 1992
* Trechus tusquitee Barr, 1979
* Trechus tusquitensis Donabauer, 2005
* Trechus tuxeni Jeannel, 1957
* Trechus tychus Jeannel, 1960
* Trechus tyrrhenicus Jeannel, 1927
* Trechus tyshkanensis Deuve & Queinnec, 1992
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## U

* Trechus udiensis Ortuño, 2017
* Trechus uenyeensis Donabauer, 2006
* Trechus ulrichi Pawlowski, 1976
* Trechus umbricola Wollaston, 1854
* Trechus uncifer Barr, 1962
* Trechus unicoi Barr, 1979
* Trechus urartaeus Pavesi & Sciaky, 1994
* Trechus usgentensis Belousov & Kabak, 1998
* Trechus utschderensis Reitter, 1890
* Trechus utsi J.Schmidt, 2016
* Trechus uygur Deuve, 1993
* Trechus uygurorum Belousov & Kabak, 1994
* Trechus uyttenboogaarti Jeannel, 1936
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## V

* Trechus valbonensis Jeannel, 1927
* Trechus valentinei Barr, 1979
* Trechus valenzuelai Fresneda; Bourdeau & Faille, 2015
* Trechus validicollis Sciaky & Pavesi, 1995
* Trechus validipes K.Daniel, 1902
* Trechus valikhanovi Belousov & Kabak, 1993
* Trechus vallestris K. & J.Daniel, 1898
* Trechus vandykei (Jeannel, 1927)
* Trechus varendorffi Sainte-Claire Deville, 1903
* Trechus verus Barr, 1962
* Trechus vietnamicus Ueno, 1995
* Trechus vignai Casale, 1979
* Trechus viti Pawlowski, 1977
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## W

* Trechus wagneri Ganglbauer, 1906
* Trechus walteri Pawlowski, 1978
* Trechus wayahbaldensis Donabauer, 2005
* Trechus weiratheri Jeannel, 1929
* Trechus weiserti Donabauer, 2007
* Trechus weixiensis Belousov & Kabak, 2000
* Trechus wiersbowskyi J.Schmidt & Faille, 2018
* Trechus winkleri Jeannel, 1927
* Trechus witkowskii Pawlowski, 1978
* Trechus wittmeri Ueno, 1977
* Trechus wrzecionkoellus Deuve, 2011
* Trechus wrzecionkoi Deuve, 1996
* Trechus wrzecionkoianus Deuve, 2005
* Trechus wutaicola (Deuve, 1988)
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## X Y Z

* Trechus xiei Deuve, 1992
* Trechus xinjiangensis Deuve, 1992
* Trechus xiwuensis Deuve, 1996
* Trechus yak J.Schmidt, 2009
* Trechus yanoi Jeannel, 1937
* Trechus yaralensis Belousov & Kabak, 2000
* Trechus yasudai Ueno, 1973
* Trechus yengensis Morvan, 1982
* Trechus yeti J.Schmidt, 2009
* Trechus yvesbousqueti Donabauer, 2010
* Trechus zaerensis Antoine, 1928
* Trechus zamotajlovi Belousov, 1990
* Trechus zangherii Jeannel, 1927
* Trechus zarandicus P.Moravec, 1986
* Trechus zaslavskii Jeannel, 1962
* Trechus zetteli Donabauer, 2007
* Trechus zhabyk Belousov & Kabak, 1994
* Trechus zhangi Deuve, 1989
* Trechus zhaosuensis Deuve, 2004
* Trechus zhdankoi Belousov & Kabak, 1992
* Trechus zhugquicus Deuve, 2009
* Trechus ziganensis Jeanne, 1976
* Trechus zinovievi Belousov & Kabak, 1996
* Trechus zintshenkoi Belousov & Kabak, 1999
* Trechus zoigeicola Belousov & Kabak, 2000
* Trechus zoigensis Deuve, 1989
* Trechus zolotikhini Belousov, 1990
* Trechus zonguldakensis Donabauer, 2004
* Trechus zorgatii Quéinnec & Ollivier, 2013
* Trechus zvarici Belousov & Kabak, 2000
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## Extinct

* † Trechus balticus J.Schmidt & Faille, 2015
* † Trechus capito Forster, 1891
* † Trechus eoanophthalmus J.Schmidt; Hoffmann & Michalik, 2016
* † Trechus exhibitorius J.Schmidt; Belousov & Michalik, 2016
* † Trechus fractus Wickham, 1912