Formicidae Latreille, 1802
Leptothorax acervorum (Fabricius, 1793)
Leptothorax aeolius Forel, 1911
Leptothorax affinis Mayr, 1855
Leptothorax aguayoi (Wheeler, 1931)
Leptothorax alayoi Baroni Urbani, 1978
Leptothorax albipennis (Curtis, 1854)
Leptothorax albispinus (Wheeler, 1908)
Leptothorax algiricus Forel, 1895
Leptothorax alinae Radchenko, 1993
Leptothorax allardycei (Mann, 1920)
Leptothorax alpinus Ruzsky, 1902
Leptothorax ambiguus Emery, 1895
Leptothorax anacanthus Santschi, 1912
Leptothorax andrei Emery, 1895
Leptothorax androsanus (Wheeler, 1905)
Leptothorax anduzei Weber, 1943
Leptothorax anemicus Baroni Urbani, 1978
Leptothorax angulatus Mayr, 1862
Leptothorax angustulus (Nylander, 1856)
Leptothorax annexus Baroni Urbani, 1978
Leptothorax annibalis Santschi, 1909
Leptothorax anodonta Arnol'di, 1977
Leptothorax anodontoides Dlussky & Zabelin, 1985
Leptothorax antigoni Forel, 1911
Leptothorax arcanus Kutter, 1973
Leptothorax archangelskiji Kuznetsov-Ugamsky, 1926
Leptothorax arenarius Santschi, 1908
Leptothorax argentinus Santschi, 1922
Leptothorax argentipes Wheeler, 1928
Leptothorax arimensis Azuma, 1977
Leptothorax arpini Tarbinsky, 1976
Leptothorax asper Mayr, 1887
Leptothorax atlantis Santschi, 1911
Leptothorax augusti Baroni Urbani, 1978
Leptothorax auresianus Santschi, 1929
Leptothorax aveli Bondroit, 1918
Leptothorax aztecus (Wheeler, 1931)
Leptothorax baeticus Emery, 1924
Leptothorax balchashensis Arnol'di, 1971
Leptothorax balli Santschi, 1939
Leptothorax barbouri (Aguayo, 1931)
Leptothorax barroi (Aguayo, 1931)
Leptothorax barryi Cagniant, 1967
Leptothorax berlandi Bondroit, 1918
Leptothorax bermudezi (Wheeler, 1931)
Leptothorax blascoi Espasaler, 1997
Leptothorax bradleyi Wheeler, 1913
Leptothorax brasiliensis Kempf, 1958
Leptothorax brauneri Ruzsky, 1905
Leptothorax braunsi (Forel, 1912)
Leptothorax brevicornis Bernard, 1977
Leptothorax brimodus Bolton, 1995
Leptothorax bruneri (Mann, 1924)
Leptothorax bucheti Santschi, 1909
Leptothorax bugnioni Forel, 1894
Leptothorax bulgaricus Forel, 1892
Leptothorax buschingeri Kutter, 1967
Leptothorax cabrerae Forel, 1893
Leptothorax caesari Espadaler, 1997
Leptothorax cagnianti Tinaut, 1983
Leptothorax canescens Santschi, 1908
Leptothorax caparica Henin, 2004
Leptothorax carinatus Cole, 1957
Leptothorax cataulacoides Snelling, 1992
Leptothorax caucasicus Arnol'di, 1977
Leptothorax cenatus Bolton, 1982
Leptothorax cervantesi Santschi, 1919
Leptothorax ciferrii (Menozzi & Russo, 1930)
Leptothorax clavipilis (Wheeler, 1910)
Leptothorax clypeatus (Mayr, 1853)
Leptothorax confucii (Forel, 1912)
Leptothorax congruus Smith, 1874
Leptothorax convexus Forel, 1894
Leptothorax cornibrevis Collingwood, 1961
Leptothorax corticalis (Schenck, 1852)
Leptothorax costatus Emery, 1896
Leptothorax crassipilis Wheeler, 1917
Leptothorax crassispinus Karavaiev, 1926
Leptothorax creightoni (Mann, 1929)
Leptothorax creolus Baroni Urbani, 1978
Leptothorax crepuscularis Tinaut, 1994
Leptothorax cristinae Espadaler, 1997
Leptothorax curtulus Santschi, 1929
Leptothorax curvispinosus Mayr, 1866
Leptothorax darlingtoni (Wheeler, 1937)
Leptothorax delaparti Forel, 1890
Leptothorax denticulatus Mayr, 1901
Leptothorax desertorum (Dlussky & Soyunov, 1988)
Leptothorax desioi Menozzi, 1939
Leptothorax dessyi Menozzi, 1936
Leptothorax discoloratus Arnol'di, 1977
Leptothorax dissimilis (Aguayo, 1932)
Leptothorax duloticus Wesson, 1937
Leptothorax eburneipes Wheeler, 1927
Leptothorax echinatinodis Forel, 1886
Leptothorax emeryi Santschi, 1923
Leptothorax evelynae Forel, 1916
Leptothorax exilis Emery, 1869
Leptothorax faberi Buschinger, 1983
Leptothorax finzii Menozzi, 1925
Leptothorax flavicornis Emery, 1870
Leptothorax flavidulus (Wheeler & Mann, 1914)
Leptothorax flavispinus André, 1883
Leptothorax foreli Santschi, 1907
Leptothorax formosus Santschi, 1909
Leptothorax fuentei Santschi, 1919
Leptothorax fultonii Forel, 1902
Leptothorax fumosus Ruzsky, 1923
Leptothorax furunculus Wheeler, 1909
Leptothorax fuscatus (Mann, 1920)
Leptothorax gaetulus Santschi, 1923
Leptothorax galeatus Wheeler, 1927
Leptothorax gallae Smith, 1949
Leptothorax gazella Santschi, 1923
Leptothorax gibbifer Baroni Urbani, 1978
Leptothorax glaesarius Wheeler, 1915
Leptothorax goniops Baroni Urbani, 1978
Leptothorax gracilicornis Emery, 1882
Leptothorax gracilis Mayr, 1868
Leptothorax graecus Forel, 1911
Leptothorax gredleri Mayr, 1855
Leptothorax gredosi Espadaler & Collingwood, 1982
Leptothorax grisoni Forel, 1916
Leptothorax grouvellei Bondroit, 1918
Leptothorax gundlachi (Wheeler, 1913)
Leptothorax hadrumetensis Santschi, 1918
Leptothorax hesperius Santschi, 1909
Leptothorax hispaniolae Baroni Urbani, 1978
Leptothorax hispidus Cole, 1957
Leptothorax huehuetenangoi Baroni Urbani, 1978
Leptothorax humerosus Emery, 1896
Leptothorax hystriculus Wheeler, 1915
Leptothorax ibericus Menozzi, 1922
Leptothorax inermis Forel, 1902
Leptothorax innocens (Forel, 1913)
Leptothorax interruptus (Schenck, 1852)
Leptothorax iranicus Radchenko, 1993
Leptothorax iris (Roger, 1863)
Leptothorax isabellae (Wheeler, 1908)
Leptothorax italicus Consani, 1952
Leptothorax itinerans Kempf, 1959
Leptothorax ixili Baroni Urbani, 1978
Leptothorax jacobsoni (Forel, 1915)
Leptothorax jailensis Arnol'di, 1977
Leptothorax jajlensis Arnoldi, 1977
Leptothorax janushevi Radchenko, 1993
Leptothorax kaszabi Pisarski, 1969
Leptothorax kemali Santschi, 1934
Leptothorax kirghizicus Tarbinsky, 1976
Leptothorax knipovitschi Karavaiev, 1916
Leptothorax knipovitshi Karavaiev, 1916
Leptothorax korbi Emery, 1922
Leptothorax koreanus Teranishi, 1940
Leptothorax kraussei Emery, 1916
Leptothorax kurilensis Radchenko, 1993
Leptothorax laciniatus Stitz, 1917
Leptothorax laestrygon Santschi, 1931
Leptothorax laetus (Wheeler, 1937)
Leptothorax lagrecai Baroni Urbani, 1964
Leptothorax laurae Emery, 1884
Leptothorax leoni Arnol'di, 1971
Leptothorax lereddei Bernard, 1953
Leptothorax leucacanthus Baroni Urbani, 1978
Leptothorax leviceps Emery, 1898
Leptothorax lichtensteini Bondroit, 1918
Leptothorax lindbergi Santschi, 1931
Leptothorax longaevus Wheeler, 1915
Leptothorax longipilosus Santschi, 1912
Leptothorax longispinosus Roger, 1863
Leptothorax luteus Forel, 1874
Leptothorax madecassus Forel, 1892
Leptothorax manni Wheeler, 1914
Leptothorax mariposa Wheeler, 1917
Leptothorax marocana Santschi, 1909
Leptothorax massiliensis Bondroit, 1918
Leptothorax mauritanicus Santschi, 1909
Leptothorax maurus Santschi, 1921
Leptothorax megalops Hamann & Klemm, 1967
Leptothorax melanocephalus Emery, 1870
Leptothorax melas Espadaler, Plateaux & Casevitz-Weulersse, 1984
Leptothorax melleus Forel, 1904
Leptothorax melnikovi Ruzsky, 1905
Leptothorax minozzii Santschi, 1922
Leptothorax minutissimus Smith, 1942
Leptothorax mirassolis Diniz, 1975
Leptothorax miserabilis Santschi, 1918
Leptothorax mongolicus Pisarski, 1969
Leptothorax monjauzei Cagniant, 1968
Leptothorax mortoni (Aguayo, 1937)
Leptothorax muscorum (Nylander, 1846)
Leptothorax myersi (Wheeler, 1931)
Leptothorax nadigi Kutter, 1925
Leptothorax naeviventris Santschi, 1910
Leptothorax nassanowi Ruzsky, 1895
Leptothorax nassonovi Ruzsky, 1895
Leptothorax nevadensis Wheeler, 1903
Leptothorax niger Forel, 1894
Leptothorax nigricans Baroni Urbani, 1978
Leptothorax nigriceps Mayr, 1855
Leptothorax nigritus Emery, 1878
Leptothorax nitens Emery, 1895
Leptothorax normandi Santschi, 1912
Leptothorax nylanderi (Foerster, 1850)
Leptothorax obliquicanthus Cole, 1953
Leptothorax obturator Wheeler, 1903
Leptothorax ocarinae Baroni Urbani, 1978
Leptothorax oceanicus (Kuznetsov-Ugamsky, 1928)
Leptothorax opalinus (Wheeler, 1937)
Leptothorax oraniensis Forel, 1894
Leptothorax oxianus Ruzsky, 1905
Leptothorax pallidipes Santschi, 1910
Leptothorax pallidus Collingwood, 1961
Leptothorax pamiricus Ruzsky, 1902
Leptothorax pan Santschi, 1936
Leptothorax paraxenus Heinze & Alloway, 1992
Leptothorax pardoi Tinaut, 1987
Leptothorax parvulus (Schenck, 1852)
Leptothorax pastinifer (Emery, 1894)
Leptothorax pastoris Baroni Urbani, 1978
Leptothorax pelagosanus Mueller, 1923
Leptothorax peninsularis Wheeler, 1934
Leptothorax pergandei Emery, 1895
Leptothorax personatus Cagniant, 1987
Leptothorax peyerimhoffi Santschi, 1929
Leptothorax pittieri Forel, 1899
Leptothorax placivus Wheeler, 1915
Leptothorax platycephalus Espadaler, 1997
Leptothorax platycnemis (Wheeler, 1937)
Leptothorax pleuriticus Kempf, 1959
Leptothorax poeyi (Wheeler, 1913)
Leptothorax polita (Smith, 1939)
Leptothorax porphyritis (Roger, 1863)
Leptothorax praecreolus De Andrade, 1992
Leptothorax pulchellus (Emery, 1894)
Leptothorax pulcher Emery, 1917
Leptothorax punicans (Roger, 1863)
Leptothorax purpuratus (Roger, 1863)
Leptothorax pyrenaeus Bondroit, 1918
Leptothorax rabaudi Bondroit, 1918
Leptothorax racovitzai Bondroit, 1918
Leptothorax recedens (Nylander, 1856)
Leptothorax reduncus (Wang & Wu, 1988)
Leptothorax retractus Francoeur, 1986
Leptothorax retusispinosus Forel, 1892
Leptothorax risii Forel, 1892
Leptothorax rogeri (Emery, 1869)
Leptothorax rothneyi Forel, 1902
Leptothorax rottenbergi (Emery, 1870)
Leptothorax rottenbergii (Emery, 1870)
Leptothorax rougeti Bondroit, 1918
Leptothorax rugatulus Emery, 1895
Leptothorax rugiceps (Aguayo, 1932)
Leptothorax rutilans Kempf, 1958
Leptothorax sallei (Guerin-Meneville, 1852)
Leptothorax salvini (Forel, 1899)
Leptothorax sardous Santschi, 1909
Leptothorax satunini Ruzsky, 1902
Leptothorax scabripes (Mann, 1920)
Leptothorax scamni Ruzsky, 1905
Leptothorax schaufussi (Forel, 1879)
Leptothorax schaufussii (Forel, 1879)
Leptothorax schaumii Roger, 1863
Leptothorax schmittii Wheeler, 1903
Leptothorax schurri Forel, 1902
Leptothorax schwarzi (Mann, 1920)
Leptothorax schwebeli Forel, 1913
Leptothorax sculptiventris Mayr, 1887
Leptothorax semenovi Ruzsky, 1903
Leptothorax semiruber Andre, 1881
Leptothorax senectutis Baroni Urbani, 1978
Leptothorax serviculus Ruzsky, 1902
Leptothorax sevanensis Arnol'di, 1977
Leptothorax shelkovnikovi Karavaiev, 1926
Leptothorax sikorai Emery, 1896
Leptothorax silvestrii (Santschi, 1911)
Leptothorax simoni (Emery, 1895)
Leptothorax singularis Radchenko, 1993
Leptothorax skwarrae (Wheeler, 1931)
Leptothorax smithi Baroni Urbani, 1978
Leptothorax solerii Menozzi, 1936
Leptothorax sordidulus Mueller, 1923
Leptothorax specularis Emery, 1916
Leptothorax spelndidiceps Baroni Urbani, 1968
Leptothorax sphagnicola Francoeur, 1986
Leptothorax spininodis Mayr, 1887
Leptothorax spinosior Forel, 1901
Leptothorax spinosus Forel, 1909
Leptothorax splendens (Wheeler, 1905)
Leptothorax squamifer (Roger, 1863)
Leptothorax steinbergi Arnol'di, 1971
Leptothorax stenotyle Cole, 1956
Leptothorax stipaceus Ruzsky, 1905
Leptothorax stollii Forel, 1885
Leptothorax stramineus (Arnold, 1948)
Leptothorax striatulus Stitz, 1937
Leptothorax subcingulatus Emery, 1924
Leptothorax subditivus (Wheeler, 1903)
Leptothorax submuticus Emery, 1915
Leptothorax susamyri Dlussky, 1965
Leptothorax svartshevskii Karavaiev, 1916
Leptothorax taivanensis Wheeler, 1929
Leptothorax tamarae Radchenko, 1993
Leptothorax tauricus Ruzsky, 1902
Leptothorax tebessae Forel, 1890
Leptothorax tenuisculptus Baroni Urbani, 1978
Leptothorax tenuispinus Santschi, 1911
Leptothorax terricola (Mann, 1920)
Leptothorax terrigena Wheeler, 1903
Leptothorax tesquorum Arnol'di, 1977
Leptothorax texanus Wheeler, 1903
Leptothorax theryi Santschi, 1921
Leptothorax tianschanicus Tarbinsky, 1976
Leptothorax tonsuratus Kempf, 1959
Leptothorax torrei (Aguayo, 1931)
Leptothorax totonicapani Baroni Urbani, 1978
Leptothorax tricarinatus Emery, 1895
Leptothorax tricolor Santschi, 1925
Leptothorax tristani Emery, 1896
Leptothorax tristis Bondroit, 1918
Leptothorax tuberum (Fabricius, 1775)
Leptothorax turcicus Santschi, 1934
Leptothorax tuscaloosae Wilson, 1951
Leptothorax tyndalei Forel, 1909
Leptothorax umbratipes (Wheeler, 1937)
Leptothorax unifasciatus (Latreille, 1798)
Leptothorax universitatis Espadaler, 1997
Leptothorax usunkul Ruzsky, 1924
Leptothorax vandeli (Bondroit, 1920)
Leptothorax versicolor (Roger, 1863)
Leptothorax vicinus Mayr, 1887
Leptothorax villarensis (Aguayo, 1931)
Leptothorax violaceus (Mann, 1924)
Leptothorax volgensis Ruzsky, 1905
Leptothorax volubilis Santschi, 1929
Leptothorax werneri Radchenko, 1993
Leptothorax wheeleri (Mann, 1920)
Leptothorax wilda Smith, 1943
Leptothorax wilsoni Heinze, 1989
Leptothorax wollastoni Donisthorpe, 1940
Leptothorax wroughtonii Forel, 1904