Nearctic Region Species List

The following species and subspecies are known from the Nearctic Region. The countries listed are only those within this region. Species noted as 'introduced' are considered to be introduced into at least one country within the region (but may be native in other countries). Endemic species (those known only from this region) are noted except where the genus is endemic, in which case all of the listed species are endemic.

Acanthostichus

 * Acanthostichus arizonensis Mackay, W.P., 1996
 * Acanthostichus davisi (Smith, M.R., 1942)
 * Acanthostichus punctiscapus Mackay, W.P., 1996
 * Acanthostichus texanus Forel, 1904

Acromyrmex

 * Acromyrmex versicolor (Pergande, 1893)

Acropyga

 * Acropyga epedana Snelling, R.R., 1973 Endemic to this region

Anochetus

 * Anochetus mayri Emery, 1884

Aphaenogaster

 * Aphaenogaster ashmeadi (Emery, 1895) Endemic to this region
 * Aphaenogaster boulderensis Smith, M.R., 1941
 * Aphaenogaster carolinensis Wheeler, W.M., 1915 Endemic to this region
 * Aphaenogaster flemingi Smith, M.R., 1928 Endemic to this region
 * Aphaenogaster floridana Smith, M.R., 1941 Endemic to this region
 * Aphaenogaster fulva Roger, 1863 Endemic to this region
 * Aphaenogaster huachucana Creighton, 1934
 * Aphaenogaster lamellidens Mayr, 1886 Endemic to this region
 * Aphaenogaster mariae Forel, 1886 Endemic to this region
 * Aphaenogaster megommata Smith, M.R., 1963
 * Aphaenogaster miamiana Wheeler, W.M., 1932
 * Aphaenogaster occidentalis (Emery, 1895) Endemic to this region
 * Aphaenogaster patruelis Forel, 1886
 * Aphaenogaster picea (Wheeler, W.M., 1908) Endemic to this region
 * Aphaenogaster punctaticeps Mackay, W.P., 1989
 * Aphaenogaster rudis Enzmann, J., 1947 Endemic to this region
 * Aphaenogaster smithi Gregg, 1949 Endemic to this region
 * Aphaenogaster tennesseensis (Mayr, 1862) Endemic to this region
 * Aphaenogaster texana Wheeler, W.M., 1915
 * Aphaenogaster treatae Forel, 1886 Endemic to this region
 * Aphaenogaster uinta Wheeler, W.M., 1917 Endemic to this region
 * Aphaenogaster umphreyi Deyrup & Davis, 1998 Endemic to this region

Atta

 * Atta mexicana (Smith, F., 1858)
 * Atta texana (Buckley, 1860)

Brachymyrmex

 * Brachymyrmex aphidicola Forel, 1909
 * Brachymyrmex bruchi Forel, 1912
 * Brachymyrmex cordemoyi Forel, 1895
 * Brachymyrmex depilis Emery, 1893
 * Brachymyrmex obscurior Forel, 1893
 * Brachymyrmex patagonicus Mayr, 1868
 * Brachymyrmex termitophilus Forel, 1895

Brachyponera

 * Brachyponera chinensis (Emery, 1895)

Camponotus

 * Camponotus absquatulator Snelling, R.R., 2006
 * Camponotus acutirostris Wheeler, W.M., 1910
 * Camponotus americanus Mayr, 1862 Endemic to this region
 * Camponotus anthrax Wheeler, W.M., 1911
 * Camponotus atriceps (Smith, F., 1858)
 * Camponotus bakeri Wheeler, W.M., 1904 Endemic to this region
 * Camponotus caryae (Fitch, 1855)
 * Camponotus castaneus (Latreille, 1802) Endemic to this region
 * Camponotus chromaiodes Bolton, 1995 Endemic to this region
 * Camponotus clarithorax Creighton, 1950
 * Camponotus cuauhtemoc Snelling, R.R., 1988
 * Camponotus decipiens Emery, 1893
 * Camponotus discolor (Buckley, 1866) Endemic to this region
 * Camponotus dumetorum Wheeler, W.M., 1910
 * Camponotus essigi Smith, M.R., 1923
 * Camponotus festinatus (Buckley, 1866)
 * Camponotus floridanus (Buckley, 1866) Endemic to this region
 * Camponotus fragilis Pergande, 1893
 * Camponotus herculeanus (Linnaeus, 1758)
 * Camponotus hyatti Emery, 1893
 * Camponotus inaequalis Roger, 1863
 * Camponotus incensus Wheeler, W.M., 1932 Endemic to this region
 * Camponotus laevigatus (Smith, F., 1858)
 * Camponotus laevissimus Mackay, 2019
 * Camponotus maccooki Forel, 1879
 * Camponotus maritimus Ward, 2005 Endemic to this region
 * Camponotus microps Snelling, R.R., 2006
 * Camponotus mina Forel, 1879
 * Camponotus modoc Wheeler, W.M., 1910
 * Camponotus nearcticus Emery, 1893 Endemic to this region
 * Camponotus novaeboracensis (Fitch, 1855) Endemic to this region
 * Camponotus novogranadensis Mayr, 1870
 * Camponotus ocreatus Emery, 1893
 * Camponotus pennsylvanicus (De Geer, 1773)
 * Camponotus planatus Roger, 1863
 * Camponotus pudorosus Emery, 1925
 * Camponotus sansabeanus (Buckley, 1866)
 * Camponotus sayi Emery, 1893
 * Camponotus schaefferi Wheeler, W.M., 1909 Endemic to this region
 * Camponotus semitestaceus Snelling, R.R., 1970
 * Camponotus sexguttatus (Fabricius, 1793)
 * Camponotus snellingi Bolton, 1995 Endemic to this region
 * Camponotus socius Roger, 1863
 * Camponotus subbarbatus Emery, 1893 Endemic to this region
 * Camponotus texanus Wheeler, W.M., 1903 Endemic to this region
 * Camponotus trepidulus Creighton, 1965
 * Camponotus ulcerosus Wheeler, W.M., 1910
 * Camponotus vafer Wheeler, W.M., 1910
 * Camponotus vicinus Mayr, 1870
 * Camponotus yogi Wheeler, W.M., 1915

Cardiocondyla

 * Cardiocondyla emeryi Forel, 1881
 * Cardiocondyla mauritanica Forel, 1890
 * Cardiocondyla minutior Forel, 1899
 * Cardiocondyla obscurior Wheeler, W.M., 1929
 * Cardiocondyla venustula Wheeler, W.M., 1908
 * Cardiocondyla wroughtonii (Forel, 1890)

Carebara

 * Carebara longii (Wheeler, W.M., 1903) Endemic to this region

Cephalotes

 * Cephalotes rohweri (Wheeler, W.M., 1916)
 * Cephalotes texanus (Santschi, 1915)
 * Cephalotes varians (Smith, F., 1876)

Colobopsis

 * Colobopsis acuta Mackay, 2018 Endemic to this region
 * Colobopsis etiolata (Wheeler, W.M., 1904)
 * Colobopsis impressa Roger, 1863
 * Colobopsis mississippiensis (Smith, M.R., 1923) Endemic to this region
 * Colobopsis obliqua (Smith, M.R., 1930) Endemic to this region
 * Colobopsis papago (Creighton, 1953)
 * Colobopsis riehlii Roger, 1863

Crematogaster

 * Crematogaster ashmeadi Mayr, 1886
 * Crematogaster browni Buren, 1968
 * Crematogaster californica Wheeler, W.M., 1919
 * Crematogaster cerasi (Fitch, 1855)
 * Crematogaster coarctata Mayr, 1870
 * Crematogaster colei Buren, 1968 Endemic to this region
 * Crematogaster corvina Mayr, 1870
 * Crematogaster crinosa Mayr, 1862
 * Crematogaster dentinodis Forel, 1901
 * Crematogaster depilis Wheeler, W.M., 1919
 * Crematogaster detecta Ward & Blaimer, 2022 Endemic to this region
 * Crematogaster distans Mayr, 1870
 * Crematogaster emeryana Creighton, 1950
 * Crematogaster hespera Buren, 1968
 * Crematogaster isolata Buren, 1968
 * Crematogaster laeviuscula Mayr, 1870
 * Crematogaster larreae Buren, 1968
 * Crematogaster lineolata (Say, 1836)
 * Crematogaster marioni Buren, 1968
 * Crematogaster minutissima Mayr, 1870
 * Crematogaster missouriensis Emery, 1895 Endemic to this region
 * Crematogaster mutans Buren, 1968 Endemic to this region
 * Crematogaster navajoa Buren, 1968 Endemic to this region
 * Crematogaster nocturna Buren, 1968 Endemic to this region
 * Crematogaster obscurata Emery, 1895
 * Crematogaster opaca Mayr, 1870
 * Crematogaster opuntiae Buren, 1968
 * Crematogaster parapilosa Ward & Blaimer, 2022 Endemic to this region
 * Crematogaster pilosa Emery, 1895 Endemic to this region
 * Crematogaster pinicola Deyrup & Cover, 2007 Endemic to this region
 * Crematogaster punctulata Emery, 1895
 * Crematogaster rifelna Buren, 1968
 * Crematogaster torosa Mayr, 1870
 * Crematogaster vermiculata Emery, 1895
 * Crematogaster vetusta Ward & Blaimer, 2022

Cryptopone

 * Cryptopone gilva (Roger, 1863) Endemic to this region

Cyphomyrmex

 * Cyphomyrmex flavidus Pergande, 1896
 * Cyphomyrmex minutus Mayr, 1862
 * Cyphomyrmex rimosus (Spinola, 1851)
 * Cyphomyrmex wheeleri Forel, 1900

Discothyrea

 * Discothyrea testacea Roger, 1863

Dolichoderus

 * Dolichoderus mariae Forel, 1885
 * Dolichoderus plagiatus (Mayr, 1870)
 * Dolichoderus pustulatus Mayr, 1886 Endemic to this region
 * Dolichoderus taschenbergi (Mayr, 1866) Endemic to this region

Dolopomyrmex
Genus endemic to this region
 * Dolopomyrmex pilatus Cover & Deyrup, 2007

Dorymyrmex

 * Dorymyrmex bicolor Wheeler, W.M., 1906
 * Dorymyrmex bossutus (Trager, 1988) Endemic to this region
 * Dorymyrmex bureni (Trager, 1988)
 * Dorymyrmex elegans (Trager, 1988)
 * Dorymyrmex flavopectus Smith, M.R., 1944
 * Dorymyrmex flavus McCook, 1879
 * Dorymyrmex grandulus (Forel, 1922) Endemic to this region
 * Dorymyrmex insanus (Buckley, 1866)
 * Dorymyrmex lipan Snelling, R.R., 1995
 * Dorymyrmex medeis (Trager, 1988) Endemic to this region
 * Dorymyrmex paiute Snelling, R.R., 1995 Endemic to this region
 * Dorymyrmex reginicula (Trager, 1988) Endemic to this region
 * Dorymyrmex smithi Cole, 1936
 * Dorymyrmex wheeleri (Kusnezov, 1952) Endemic to this region

Eurhopalothrix

 * Eurhopalothrix floridana Brown & Kempf, 1960

Forelius

 * Forelius damiani Guerrero & Fernández, 2008
 * Forelius mccooki (McCook, 1879)
 * Forelius pruinosus (Roger, 1863)

Formica

 * Formica accreta Francoeur, 1973 Endemic to this region
 * Formica adamsi Wheeler, W.M., 1909 Endemic to this region
 * Formica adamsi alpina Wheeler, W.M., 1909 Endemic to this region
 * Formica adamsi whymperi Wheeler, W.M., 1917 Endemic to this region
 * Formica aerata Francoeur, 1973 Endemic to this region
 * Formica altipetens Wheeler, W.M., 1913
 * Formica archboldi Smith, M.R., 1944 Endemic to this region
 * Formica argentea Wheeler, W.M., 1912
 * Formica aserva Forel, 1901 Endemic to this region
 * Formica aterrima Cresson, 1865 Endemic to this region
 * Formica biophilica Trager, 2007 Endemic to this region
 * Formica bradleyi Wheeler, W.M., 1913 Endemic to this region
 * Formica californica (Creighton, 1950) Endemic to this region
 * Formica calviceps Cole, 1954
 * Formica canadensis Santschi, 1914 Endemic to this region
 * Formica ciliata Mayr, 1886 Endemic to this region
 * Formica coloradensis Creighton, 1940 Endemic to this region
 * Formica comata Wheeler, W.M., 1909 Endemic to this region
 * Formica creightoni Buren, 1968 Endemic to this region
 * Formica criniventris Wheeler, W.M., 1912 Endemic to this region
 * Formica curiosa Creighton, 1935 Endemic to this region
 * Formica dakotensis Emery, 1893 Endemic to this region
 * Formica densiventris Viereck, 1903
 * Formica difficilis Emery, 1893 Endemic to this region
 * Formica dirksi Wing, 1949 Endemic to this region
 * Formica dolosa Buren, 1944 Endemic to this region
 * Formica emeryi Wheeler, W.M., 1913 Endemic to this region
 * Formica exsectoides Forel, 1886
 * Formica ferocula Wheeler, W.M., 1913 Endemic to this region
 * Formica foreliana Wheeler, W.M., 1913
 * Formica fossaceps Buren, 1942 Endemic to this region
 * Formica francoeuri Bolton, 1995
 * Formica fusca Linnaeus, 1758
 * Formica glacialis Wheeler, W.M., 1908 Endemic to this region
 * Formica gnava Buckley, 1866
 * Formica gynocrates Snelling, R.R. & Buren, 1985 Endemic to this region
 * Formica hewitti Wheeler, W.M., 1917
 * Formica impexa Wheeler, W.M., 1905 Endemic to this region
 * Formica incerta Buren, 1944 Endemic to this region
 * Formica indianensis Cole, 1940 Endemic to this region
 * Formica integra Nylander, 1856 Endemic to this region
 * Formica integroides Wheeler, W.M., 1913
 * Formica knighti Buren, 1944 Endemic to this region
 * Formica laeviceps Creighton, 1940 Endemic to this region
 * Formica lasioides Emery, 1893
 * Formica lepida Wheeler, W.M., 1913 Endemic to this region
 * Formica limata Wheeler, W.M., 1913
 * Formica longipilosa Francoeur, 1973 Endemic to this region
 * Formica manni Wheeler, W.M., 1913 Endemic to this region
 * Formica microgyna Wheeler, W.M., 1903
 * Formica microphthalma Francoeur, 1973 Endemic to this region
 * Formica moki Wheeler, W.M., 1906
 * Formica montana Wheeler, W.M., 1910
 * Formica morsei Wheeler, W.M., 1906 Endemic to this region
 * Formica mucescens Wheeler, W.M., 1913 Endemic to this region
 * Formica neoclara Emery, 1893
 * Formica neogagates Viereck, 1903
 * Formica neorufibarbis Emery, 1893
 * Formica nepticula Wheeler, W.M., 1905 Endemic to this region
 * Formica nevadensis Wheeler, W.M., 1904 Endemic to this region
 * Formica obscuripes Forel, 1886 Endemic to this region
 * Formica obscuriventris Mayr, 1870 Endemic to this region
 * Formica obtusopilosa Emery, 1893
 * Formica occulta Francoeur, 1973
 * Formica opaciventris Emery, 1893 Endemic to this region
 * Formica oreas Wheeler, W.M., 1903 Endemic to this region
 * Formica oregonensis Cole, 1938 Endemic to this region
 * Formica pacifica Francoeur, 1973 Endemic to this region
 * Formica pallidefulva Latreille, 1802 Endemic to this region
 * Formica paralugubris Seifert, 1996
 * Formica pergandei Emery, 1893 Endemic to this region
 * Formica perpilosa Wheeler, W.M., 1913
 * Formica planipilis Creighton, 1940 Endemic to this region
 * Formica podzolica Francoeur, 1973
 * Formica postoculata Kennedy & Dennis, 1937 Endemic to this region
 * Formica prociliata Kennedy & Dennis, 1937 Endemic to this region
 * Formica propinqua Creighton, 1940 Endemic to this region
 * Formica puberula Emery, 1893 Endemic to this region
 * Formica querquetulana Kennedy & Dennis, 1937 Endemic to this region
 * Formica ravida Creighton, 1940 Endemic to this region
 * Formica reflexa Buren, 1942 Endemic to this region
 * Formica rubicunda Emery, 1893
 * Formica scitula Wheeler, W.M., 1913 Endemic to this region
 * Formica sibylla Wheeler, W.M., 1913 Endemic to this region
 * Formica spatulata Buren, 1944 Endemic to this region
 * Formica subaenescens Emery, 1893
 * Formica subelongata Francoeur, 1973 Endemic to this region
 * Formica subintegra Wheeler, W.M., 1908 Endemic to this region
 * Formica subnitens Creighton, 1940 Endemic to this region
 * Formica subpolita Mayr, 1886
 * Formica subsericea Say, 1836 Endemic to this region
 * Formica talbotae Wilson, 1977 Endemic to this region
 * Formica transmontanis Francoeur, 1973 Endemic to this region
 * Formica ulkei Emery, 1893 Endemic to this region
 * Formica vinculans Wheeler, W.M., 1913 Endemic to this region
 * Formica wheeleri Creighton, 1935
 * Formica xerophila Smith, M.R., 1939

Formicoxenus

 * Formicoxenus chamberlini (Wheeler, W.M., 1904) Endemic to this region
 * Formicoxenus diversipilosus (Smith, M.R., 1939) Endemic to this region
 * Formicoxenus hirticornis (Emery, 1895) Endemic to this region
 * Formicoxenus provancheri (Emery, 1895) Endemic to this region
 * Formicoxenus quebecensis Francoeur, 1985 Endemic to this region

Fulakora

 * Fulakora orizabana (Brown, 1960)

Gnamptogenys

 * Gnamptogenys hartmani (Wheeler, W.M., 1915)

Harpagoxenus

 * Harpagoxenus canadensis Smith, M.R., 1939 Endemic to this region

Hypoponera

 * Hypoponera inexorata (Wheeler, W.M., 1903)
 * Hypoponera opaciceps (Mayr, 1887)
 * Hypoponera opacior (Forel, 1893)
 * Hypoponera punctatissima (Roger, 1859)
 * Hypoponera ragusai (Emery, 1894)

Labidus

 * Labidus coecus (Latreille, 1802)

Lasius

 * Lasius americanus Emery, 1893
 * Lasius aphidicola (Walsh, 1863)
 * Lasius arizonicus Wheeler, W.M., 1917
 * Lasius atopus Cole, 1958 Endemic to this region
 * Lasius brevicornis Emery, 1893 Endemic to this region
 * Lasius bureni (Wing, 1968) Endemic to this region
 * Lasius californicus Wheeler, W.M., 1917
 * Lasius claviger (Roger, 1862) Endemic to this region
 * Lasius colei (Wing, 1968) Endemic to this region
 * Lasius coloradensis Wheeler, W.M., 1917 Endemic to this region
 * Lasius creightoni (Wing, 1968) Endemic to this region
 * Lasius crypticus Wilson, 1955
 * Lasius fallax Wilson, 1955 Endemic to this region
 * Lasius humilis Wheeler, W.M., 1917 Endemic to this region
 * Lasius interjectus Mayr, 1866 Endemic to this region
 * Lasius latipes (Walsh, 1863)
 * Lasius minutus Emery, 1893 Endemic to this region
 * Lasius murphyi Forel, 1901 Endemic to this region
 * Lasius nearcticus Wheeler, W.M., 1906 Endemic to this region
 * Lasius neoniger Emery, 1893
 * Lasius nevadensis Cole, 1956 Endemic to this region
 * Lasius niger (Linnaeus, 1758)
 * Lasius occidentalis Wheeler, W.M., 1909
 * Lasius pallitarsis (Provancher, 1881)
 * Lasius plumopilosus Buren, 1941 Endemic to this region
 * Lasius pogonogynus Buren, 1950 Endemic to this region
 * Lasius ponderosae Schär, Talavera, Rana, Espadaler, Cover, Shattuck & Vila, 2022
 * Lasius pubescens Buren, 1942 Endemic to this region
 * Lasius sitiens Wilson, 1955
 * Lasius speculiventris Emery, 1893 Endemic to this region
 * Lasius subglaber Emery, 1893 Endemic to this region
 * Lasius subumbratus Viereck, 1903
 * Lasius vestitus Wheeler, W.M., 1910 Endemic to this region
 * Lasius xerophilus Mackay, W.P. & Mackay, E.E., 1994 Endemic to this region

Leptanilloides

 * Leptanilloides chihuahuaensis MacGown, Schiefer & Branstetter, 2015 Endemic to this region

Leptogenys

 * Leptogenys elongata (Buckley, 1866)
 * Leptogenys manni Wheeler, W.M., 1923 Endemic to this region

Leptothorax

 * Leptothorax acervorum (Fabricius, 1793)
 * Leptothorax athabasca Buschinger & Schulz, 2008 Endemic to this region
 * Leptothorax calderoni Creighton, 1950 Endemic to this region
 * Leptothorax canadensis Provancher, 1887
 * Leptothorax crassipilis Wheeler, W.M., 1917
 * Leptothorax faberi Buschinger, 1983 Endemic to this region
 * Leptothorax paraxenus Heinze & Alloway, 1992 Endemic to this region
 * Leptothorax pocahontas (Buschinger, 1979) Endemic to this region
 * Leptothorax retractus Francoeur, 1986 Endemic to this region
 * Leptothorax sphagnicola Francoeur, 1986 Endemic to this region
 * Leptothorax wilsoni Heinze, 1989 Endemic to this region

Linepithema

 * Linepithema humile (Mayr, 1868)

Liometopum

 * Liometopum apiculatum Mayr, 1870
 * Liometopum luctuosum Wheeler, W.M., 1905
 * Liometopum occidentale Emery, 1895

Manica

 * Manica bradleyi (Wheeler, W.M., 1909) Endemic to this region
 * Manica hunteri (Wheeler, W.M., 1914) Endemic to this region
 * Manica invidia Bolton, 1995 Endemic to this region
 * Manica parasitica (Creighton, 1934) Endemic to this region

Monomorium

 * Monomorium cyaneum Wheeler, W.M., 1914
 * Monomorium ebeninum Forel, 1891
 * Monomorium emarginatum DuBois, 1986 Endemic to this region
 * Monomorium ergatogyna Wheeler, W.M., 1904
 * Monomorium floricola (Jerdon, 1851)
 * Monomorium minimum (Buckley, 1867)
 * Monomorium pergandei (Emery, 1893) Endemic to this region
 * Monomorium pharaonis (Linnaeus, 1758)
 * Monomorium talbotae DuBois, 1981 Endemic to this region
 * Monomorium trageri DuBois, 1986 Endemic to this region
 * Monomorium viridum Brown, 1943

Mycetomoellerius

 * Mycetomoellerius jamaicensis (André, 1893)
 * Mycetomoellerius turrifex (Wheeler, W.M., 1903)

Mycetosoritis

 * Mycetosoritis hartmanni (Wheeler, W.M., 1907)

Myrmecina

 * Myrmecina americana Emery, 1895
 * Myrmecina cooperi Deyrup, 2015 Endemic to this region

Myrmecocystus

 * Myrmecocystus arenarius Snelling, R.R., 1982 Endemic to this region
 * Myrmecocystus christineae Snelling, R.R., 1982 Endemic to this region
 * Myrmecocystus colei Snelling, R.R., 1976 Endemic to this region
 * Myrmecocystus creightoni Snelling, R.R., 1971
 * Myrmecocystus depilis Forel, 1901
 * Myrmecocystus ewarti Snelling, R.R., 1971 Endemic to this region
 * Myrmecocystus flaviceps Wheeler, W.M., 1912
 * Myrmecocystus hammettensis Cole, 1938
 * Myrmecocystus kathjuli Snelling, R.R., 1976 Endemic to this region
 * Myrmecocystus kennedyi Snelling, R.R., 1969
 * Myrmecocystus koso Snelling, R.R., 1976 Endemic to this region
 * Myrmecocystus lugubris Wheeler, W.M., 1909 Endemic to this region
 * Myrmecocystus melliger Forel, 1886
 * Myrmecocystus mendax Wheeler, W.M., 1908
 * Myrmecocystus mexicanus Wesmael, 1838
 * Myrmecocystus mimicus Wheeler, W.M., 1908
 * Myrmecocystus navajo Wheeler, W.M., 1908
 * Myrmecocystus placodops Forel, 1908
 * Myrmecocystus pyramicus Smith, M.R., 1951 Endemic to this region
 * Myrmecocystus romainei Snelling, R.R., 1975
 * Myrmecocystus semirufus Emery, 1893
 * Myrmecocystus tenuinodis Snelling, R.R., 1976
 * Myrmecocystus testaceus Emery, 1893
 * Myrmecocystus wheeleri Snelling, R.R., 1971
 * Myrmecocystus yuma Wheeler, W.M., 1912

Myrmica

 * Myrmica alaskensis Wheeler, W.M., 1917 Endemic to this region
 * Myrmica americana Weber, 1939 Endemic to this region
 * Myrmica brevispinosa Wheeler, W.M., 1917 Endemic to this region
 * Myrmica colax (Cole, 1957) Endemic to this region
 * Myrmica crassirugis Francoeur, 2007 Endemic to this region
 * Myrmica detritinodis Emery, 1921 Endemic to this region
 * Myrmica discontinua Weber, 1939 Endemic to this region
 * Myrmica fracticornis Forel, 1901 Endemic to this region
 * Myrmica glacialis Emery, 1921 Endemic to this region
 * Myrmica hamulata Weber, 1939 Endemic to this region
 * Myrmica incompleta Provancher, 1881 Endemic to this region
 * Myrmica lampra Francoeur, 1968 Endemic to this region
 * Myrmica latifrons Stärcke, 1927 Endemic to this region
 * Myrmica lobifrons Pergande, 1900 Endemic to this region
 * Myrmica monticola Creighton, 1950 Endemic to this region
 * Myrmica nearctica Weber, 1939 Endemic to this region
 * Myrmica pinetorum Wheeler, W.M., 1905 Endemic to this region
 * Myrmica punctinops Francoeur, 2007 Endemic to this region
 * Myrmica punctiventris Roger, 1863 Endemic to this region
 * Myrmica quebecensis Francoeur, 1981 Endemic to this region
 * Myrmica rubra (Linnaeus, 1758)
 * Myrmica rubra neolaevinodis Forel, 1901 Endemic to this region
 * Myrmica rugiventris (Smith, M.R., 1943) Endemic to this region
 * Myrmica scabrinodis Nylander, 1846
 * Myrmica semiparasitica Francoeur, 2007 Endemic to this region
 * Myrmica spatulata Smith, M.R., 1930 Endemic to this region
 * Myrmica specioides Bondroit, 1918
 * Myrmica striolagaster Cole, 1953
 * Myrmica tahoensis Weber, 1948
 * Myrmica trullicornis Buren, 1944 Endemic to this region
 * Myrmica wheeleri Weber, 1939 Endemic to this region
 * Myrmica wheelerorum Francoeur, 2007 Endemic to this region

Neivamyrmex

 * Neivamyrmex agilis Borgmeier, 1953
 * Neivamyrmex andrei (Emery, 1901)
 * Neivamyrmex baylori Watkins, 1973 Endemic to this region
 * Neivamyrmex californicus (Mayr, 1870)
 * Neivamyrmex carolinensis (Emery, 1894)
 * Neivamyrmex fuscipennis (Smith, M.R., 1942)
 * Neivamyrmex graciellae (Mann, 1926)
 * Neivamyrmex halidaii (Shuckard, 1840)
 * Neivamyrmex harrisii (Haldeman, 1852)
 * Neivamyrmex kiowapache Snelling, G.C. & Snelling, R.R., 2007
 * Neivamyrmex leonardi (Wheeler, W.M., 1915)
 * Neivamyrmex mandibularis (Smith, M.R., 1942)
 * Neivamyrmex melanocephalus (Emery, 1895)
 * Neivamyrmex melshaemeri (Haldeman, 1852)
 * Neivamyrmex microps Borgmeier, 1955 Endemic to this region
 * Neivamyrmex minor (Cresson, 1872)
 * Neivamyrmex mojave (Smith, M.R., 1943)
 * Neivamyrmex moseri Watkins, 1969
 * Neivamyrmex ndeh Snelling, G.C. & Snelling, R.R., 2007 Endemic to this region
 * Neivamyrmex nigrescens (Cresson, 1872)
 * Neivamyrmex nyensis Watkins, 1977
 * Neivamyrmex opacithorax (Emery, 1894)
 * Neivamyrmex pauxillus (Wheeler, W.M., 1903)
 * Neivamyrmex pilosus (Smith, F., 1858)
 * Neivamyrmex rugulosus Borgmeier, 1953
 * Neivamyrmex swainsonii (Shuckard, 1840)
 * Neivamyrmex texanus Watkins, 1972
 * Neivamyrmex wilsoni Snelling, G.C. & Snelling, R.R., 2007 Endemic to this region

Neoponera

 * Neoponera villosa (Fabricius, 1804)

Nesomyrmex

 * Nesomyrmex wilda (Smith, M.R., 1943)

Nomamyrmex

 * Nomamyrmex esenbeckii (Westwood, 1842)

Novomessor

 * Novomessor albisetosus (Mayr, 1886)
 * Novomessor cockerelli (André, 1893)

Nylanderia

 * Nylanderia arenivaga (Wheeler, W.M., 1905)
 * Nylanderia austroccidua (Trager, 1984)
 * Nylanderia bourbonica (Forel, 1886)
 * Nylanderia bruesii (Wheeler, W.M., 1903)
 * Nylanderia concinna (Trager, 1984) Endemic to this region
 * Nylanderia deceptrix Messer, Cover & LaPolla, 2016 Endemic to this region
 * Nylanderia faisonensis (Forel, 1922) Endemic to this region
 * Nylanderia flavipes (Smith, F., 1874)
 * Nylanderia fulva (Mayr, 1862)
 * Nylanderia guatemalensis (Forel, 1885)
 * Nylanderia hystrix (Trager, 1984)
 * Nylanderia magnella Kallal & LaPolla, 2012 Endemic to this region
 * Nylanderia parvula (Mayr, 1870) Endemic to this region
 * Nylanderia phantasma (Trager, 1984) Endemic to this region
 * Nylanderia pubens (Forel, 1893)
 * Nylanderia querna Kallal & LaPolla, 2012 Endemic to this region
 * Nylanderia steinheili (Forel, 1893)
 * Nylanderia terricola (Buckley, 1866)
 * Nylanderia trageri Kallal & LaPolla, 2012 Endemic to this region
 * Nylanderia vividula (Nylander, 1846)
 * Nylanderia wojciki (Trager, 1984) Endemic to this region

Ochetellus

 * Ochetellus glaber (Mayr, 1862)

Odontomachus

 * Odontomachus brunneus (Patton, 1894)
 * Odontomachus clarus Roger, 1861
 * Odontomachus desertorum Wheeler, W.M., 1915 Endemic to this region
 * Odontomachus haematodus (Linnaeus, 1758)
 * Odontomachus relictus Deyrup & Cover, 2004 Endemic to this region
 * Odontomachus ruginodis Smith, M.R., 1937

Pachycondyla

 * Pachycondyla harpax (Fabricius, 1804)

Paratrechina

 * Paratrechina longicornis (Latreille, 1802)

Pheidole

 * Pheidole absurda Forel, 1886
 * Pheidole adrianoi Naves, 1985 Endemic to this region
 * Pheidole aurea Wilson, 2003 Endemic to this region
 * Pheidole barbata Wheeler, W.M., 1908
 * Pheidole bicarinata Mayr, 1870 Endemic to this region
 * Pheidole bureni Wilson, 2003 Endemic to this region
 * Pheidole californica Mayr, 1870
 * Pheidole carrolli Naves, 1985 Endemic to this region
 * Pheidole casta Wheeler, W.M., 1908 Endemic to this region
 * Pheidole cavigenis Wheeler, W.M., 1915
 * Pheidole cerebrosior Wheeler, W.M., 1915
 * Pheidole ceres Wheeler, W.M., 1904
 * Pheidole clementensis Gregg, 1969
 * Pheidole clydei Gregg, 1950
 * Pheidole cockerelli Wheeler, W.M., 1908
 * Pheidole constipata Wheeler, W.M., 1908 Endemic to this region
 * Pheidole crassicornis Emery, 1895
 * Pheidole creightoni Gregg, 1955 Endemic to this region
 * Pheidole davisi Wheeler, W.M., 1905
 * Pheidole dentata Mayr, 1886
 * Pheidole dentigula Smith, M.R., 1927
 * Pheidole desertorum Wheeler, W.M., 1906
 * Pheidole diversipilosa Wheeler, W.M., 1908
 * Pheidole elecebra (Wheeler, W.M., 1904) Endemic to this region
 * Pheidole fervens Smith, F., 1858
 * Pheidole flavens Roger, 1863
 * Pheidole floridana Emery, 1895
 * Pheidole furtiva Wilson, 2003 Endemic to this region
 * Pheidole gilvescens Creighton & Gregg, 1955
 * Pheidole grundmanni Smith, M.R., 1953 Endemic to this region
 * Pheidole hoplitica Wilson, 2003
 * Pheidole humeralis Wheeler, W.M., 1908 Endemic to this region
 * Pheidole hyatti Emery, 1895
 * Pheidole indica Mayr, 1879
 * Pheidole inquilina (Wheeler, W.M., 1903) Endemic to this region
 * Pheidole juniperae Wilson, 2003 Endemic to this region
 * Pheidole lamia Wheeler, W.M., 1901 Endemic to this region
 * Pheidole littoralis Cole, 1952 Endemic to this region
 * Pheidole macclendoni Wheeler, W.M., 1908 Endemic to this region
 * Pheidole marcidula Wheeler, W.M., 1908
 * Pheidole megacephala (Fabricius, 1793)
 * Pheidole mera Wilson, 2003
 * Pheidole metallescens Emery, 1895 Endemic to this region
 * Pheidole micula Wheeler, W.M., 1915
 * Pheidole militicida Wheeler, W.M., 1915
 * Pheidole moerens Wheeler, W.M., 1908
 * Pheidole morrisii Forel, 1886 Endemic to this region
 * Pheidole nuculiceps Wheeler, W.M., 1908
 * Pheidole obscurithorax Naves, 1985
 * Pheidole obtusospinosa Pergande, 1896
 * Pheidole paiute Gregg, 1959 Endemic to this region
 * Pheidole pelor Wilson, 2003 Endemic to this region
 * Pheidole perpilosa Wilson, 2003 Endemic to this region
 * Pheidole pilifera (Roger, 1863)
 * Pheidole pilosior Wilson, 2003 Endemic to this region
 * Pheidole pinealis Wheeler, W.M., 1908
 * Pheidole porcula Wheeler, W.M., 1908
 * Pheidole portalensis Wilson, 2003
 * Pheidole psammophila Creighton & Gregg, 1955
 * Pheidole rhea Wheeler, W.M., 1908
 * Pheidole rugulosa Gregg, 1959
 * Pheidole sciara Cole, 1955
 * Pheidole sciophila Wheeler, W.M., 1908
 * Pheidole senex Gregg, 1952
 * Pheidole sitiens Wilson, 2003 Endemic to this region
 * Pheidole soritis Wheeler, W.M., 1908
 * Pheidole spadonia Wheeler, W.M., 1915
 * Pheidole tepicana Pergande, 1896
 * Pheidole tetra Creighton, 1950
 * Pheidole texana Wheeler, W.M., 1903 Endemic to this region
 * Pheidole titanis Wheeler, W.M., 1903
 * Pheidole tysoni Forel, 1901
 * Pheidole vallicola Wheeler, W.M., 1915
 * Pheidole virago Wheeler, W.M., 1915 Endemic to this region
 * Pheidole vistana Forel, 1914
 * Pheidole wheelerorum Mackay, W.P., 1988 Endemic to this region
 * Pheidole xerophila Wheeler, W.M., 1908
 * Pheidole yaqui Creighton & Gregg, 1955

Platythyrea

 * Platythyrea punctata (Smith, F., 1858)

Pogonomyrmex

 * Pogonomyrmex anergismus Cole, 1954
 * Pogonomyrmex anzensis Cole, 1968 Endemic to this region
 * Pogonomyrmex apache Wheeler, W.M., 1902
 * Pogonomyrmex badius (Latreille, 1802) Endemic to this region
 * Pogonomyrmex barbatus (Smith, F., 1858)
 * Pogonomyrmex bicolor Cole, 1968
 * Pogonomyrmex bigbendensis Francke & Merickel, 1982
 * Pogonomyrmex brevispinosus Cole, 1968 Endemic to this region
 * Pogonomyrmex californicus (Buckley, 1867)
 * Pogonomyrmex colei Snelling, R.R., 1982 Endemic to this region
 * Pogonomyrmex comanche Wheeler, W.M., 1902 Endemic to this region
 * Pogonomyrmex desertorum Wheeler, W.M., 1902
 * Pogonomyrmex hoelldobleri Johnson, Overson & Moreau, 2013 Endemic to this region
 * Pogonomyrmex huachucanus Wheeler, W.M., 1914
 * Pogonomyrmex imberbiculus Wheeler, W.M., 1902
 * Pogonomyrmex magnacanthus Cole, 1968
 * Pogonomyrmex maricopa Wheeler, W.M., 1914
 * Pogonomyrmex mohavensis Johnson, 2009 Endemic to this region
 * Pogonomyrmex montanus Mackay, W.P., 1980
 * Pogonomyrmex occidentalis (Cresson, 1865)
 * Pogonomyrmex pima Wheeler, W.M., 1909
 * Pogonomyrmex rugosus Emery, 1895
 * Pogonomyrmex salinus Olsen, 1934 Endemic to this region
 * Pogonomyrmex subdentatus Mayr, 1870 Endemic to this region
 * Pogonomyrmex subnitidus Emery, 1895
 * Pogonomyrmex tenuispinus Forel, 1914
 * Pogonomyrmex texanus Francke & Merickel, 1982

Polyergus

 * Polyergus bicolor Wasmann, 1901 Endemic to this region
 * Polyergus breviceps Emery, 1893
 * Polyergus longicornis Smith, M.R., 1947 Endemic to this region
 * Polyergus lucidus Mayr, 1870 Endemic to this region
 * Polyergus mexicanus Forel, 1899
 * Polyergus montivagus Wheeler, W.M., 1915 Endemic to this region
 * Polyergus oligergus Trager, 2013 Endemic to this region
 * Polyergus ruber Trager, 2013 Endemic to this region
 * Polyergus sanwaldi Trager, 2013 Endemic to this region
 * Polyergus topoffi Trager, 2013
 * Polyergus vinosus Trager, 2013

Ponera

 * Ponera exotica Smith, M.R., 1962
 * Ponera pennsylvanica Buckley, 1866

Poneracantha

 * Poneracantha triangularis (Mayr, 1887)

Prenolepis

 * Prenolepis imparis (Say, 1836)

Prionopelta

 * Prionopelta antillana Forel, 1909

Proceratium

 * Proceratium californicum Cook, 1953 Endemic to this region
 * Proceratium chickasaw De Andrade, 2003 Endemic to this region
 * Proceratium compitale Ward, 1988
 * Proceratium crassicorne Emery, 1895 Endemic to this region
 * Proceratium creek De Andrade, 2003 Endemic to this region
 * Proceratium croceum (Roger, 1860) Endemic to this region
 * Proceratium pergandei (Emery, 1895) Endemic to this region
 * Proceratium silaceum Roger, 1863

Pseudomyrmex

 * Pseudomyrmex apache Creighton, 1953
 * Pseudomyrmex caeciliae (Forel, 1913)
 * Pseudomyrmex cubaensis (Forel, 1901)
 * Pseudomyrmex ejectus (Smith, F., 1858)
 * Pseudomyrmex elongatulus (Dalla Torre, 1892)
 * Pseudomyrmex elongatus (Mayr, 1870)
 * Pseudomyrmex gracilis (Fabricius, 1804)
 * Pseudomyrmex leptosus Ward, 1985 Endemic to this region
 * Pseudomyrmex pallidus (Smith, F., 1855)
 * Pseudomyrmex seminole Ward, 1985
 * Pseudomyrmex simplex (Smith, F., 1877)

Pseudoponera

 * Pseudoponera stigma (Fabricius, 1804)

Rogeria

 * Rogeria creightoni Snelling, R.R., 1973
 * Rogeria foreli Emery, 1894

Solenopsis

 * Solenopsis abdita Thompson, 1989
 * Solenopsis amblychila Wheeler, W.M., 1915
 * Solenopsis aurea Wheeler, W.M., 1906
 * Solenopsis carolinensis Forel, 1901 Endemic to this region
 * Solenopsis corticalis Forel, 1881
 * Solenopsis geminata (Fabricius, 1804)
 * Solenopsis globularia (Smith, F., 1858)
 * Solenopsis impolita Moreno, Mackay & Pacheco, 2013 Endemic to this region
 * Solenopsis invicta Buren, 1972
 * Solenopsis krockowi Wheeler, W.M., 1908
 * Solenopsis melina Pacheco & Mackay, 2013 Endemic to this region
 * Solenopsis molesta (Say, 1836)
 * Solenopsis nickersoni Thompson, 1982 Endemic to this region
 * Solenopsis ocellata Moreno, Mackay & Pacheco, 2013 Endemic to this region
 * Solenopsis pergandei Forel, 1901 Endemic to this region
 * Solenopsis phoretica Davis & Deyrup, 2006 Endemic to this region
 * Solenopsis picta Emery, 1895 Endemic to this region
 * Solenopsis pilosula Wheeler, W.M., 1908
 * Solenopsis pulleni Pacheco, Mackay & Moreno, 2013 Endemic to this region
 * Solenopsis quadridentata Pacheco, Mackay & Moreno, 2013 Endemic to this region
 * Solenopsis richteri Forel, 1909
 * Solenopsis rosella Kennedy, 1938 Endemic to this region
 * Solenopsis salina Wheeler, W.M., 1908
 * Solenopsis subterranea Mackay, W.P. & Vinson, 1989
 * Solenopsis tennesseensis Smith, M.R., 1951
 * Solenopsis texana Emery, 1895
 * Solenopsis tonsa Thompson, 1989 Endemic to this region
 * Solenopsis validiuscula Emery, 1895
 * Solenopsis whitfordi Mackay, Moreno & Pacheco, 2013 Endemic to this region
 * Solenopsis xyloni McCook, 1879

Stenamma

 * Stenamma brevicorne (Mayr, 1886) Endemic to this region
 * Stenamma californicum Snelling, R.R., 1973
 * Stenamma chiricahua Snelling, R.R., 1973 Endemic to this region
 * Stenamma diecki Emery, 1895
 * Stenamma dyscheres Snelling, R.R., 1973 Endemic to this region
 * Stenamma exasperatum Snelling, R.R., 1973 Endemic to this region
 * Stenamma foveolocephalum Smith, M.R., 1930 Endemic to this region
 * Stenamma heathi Wheeler, W.M., 1915
 * Stenamma huachucanum Smith, M.R., 1957
 * Stenamma impar Forel, 1901 Endemic to this region
 * Stenamma meridionale Smith, M.R., 1957 Endemic to this region
 * Stenamma punctatoventre Snelling, R.R., 1973 Endemic to this region
 * Stenamma schmittii Wheeler, W.M., 1903 Endemic to this region
 * Stenamma sequoiarum Wheeler, W.M., 1917 Endemic to this region
 * Stenamma smithi Cole, 1966 Endemic to this region
 * Stenamma snellingi Bolton, 1995
 * Stenamma wheelerorum Snelling, R.R., 1973 Endemic to this region

Stigmatomma

 * Stigmatomma oregonense Wheeler, W.M., 1915 Endemic to this region
 * Stigmatomma pallipes (Haldeman, 1844) Endemic to this region
 * Stigmatomma trigonignathum (Brown, 1949) Endemic to this region

Strumigenys

 * Strumigenys abdita Wesson, L.G. & Wesson, R.G., 1939 Endemic to this region
 * Strumigenys alberti Forel, 1893
 * Strumigenys ananeotes Longino & Booher, 2019 Endemic to this region
 * Strumigenys angulata Smith, M.R., 1931 Endemic to this region
 * Strumigenys apalachicolensis (Deyrup & Lubertazzi, 2001) Endemic to this region
 * Strumigenys archboldi (Deyrup & Cover, 1998) Endemic to this region
 * Strumigenys arizonica (Ward, 1988)
 * Strumigenys bimarginata Wesson, L.G. & Wesson, R.G., 1939 Endemic to this region
 * Strumigenys boltoni (Deyrup, 2006) Endemic to this region
 * Strumigenys boneti Brown, 1959
 * Strumigenys brevisetosa Smith, M.R., 1935 Endemic to this region
 * Strumigenys bunki (Brown, 1950) Endemic to this region
 * Strumigenys californica (Brown, 1950) Endemic to this region
 * Strumigenys carolinensis (Brown, 1964) Endemic to this region
 * Strumigenys chiricahua (Ward, 1988) Endemic to this region
 * Strumigenys cloydi (Pfitzer, 1951) Endemic to this region
 * Strumigenys clypeata Roger, 1863 Endemic to this region
 * Strumigenys collinsae Booher, 2021 Endemic to this region
 * Strumigenys creightoni Smith, M.R., 1931 Endemic to this region
 * Strumigenys dietrichi Smith, M.R., 1931
 * Strumigenys eggersi Emery, 1890
 * Strumigenys emmae (Emery, 1890)
 * Strumigenys epinotalis Weber, 1934
 * Strumigenys filirrhina (Brown, 1950) Endemic to this region
 * Strumigenys filitalpa (Brown, 1950) Endemic to this region
 * Strumigenys godeffroyi Mayr, 1866
 * Strumigenys gundlachi (Roger, 1862)
 * Strumigenys hexamera (Brown, 1958)
 * Strumigenys hyalina (Bolton, 2000) Endemic to this region
 * Strumigenys inopina (Deyrup & Cover, 1998) Endemic to this region
 * Strumigenys laevinasis Smith, M.R., 1931 Endemic to this region
 * Strumigenys lanuginosa Wheeler, W.M., 1905
 * Strumigenys louisianae Roger, 1863
 * Strumigenys lucky Booher, 2021 Endemic to this region
 * Strumigenys macgowni Booher, 2021 Endemic to this region
 * Strumigenys margaritae Forel, 1893
 * Strumigenys membranifera Emery, 1869
 * Strumigenys memorialis (Deyrup, 1998) Endemic to this region
 * Strumigenys mendezi Booher, 2021 Endemic to this region
 * Strumigenys metazytes (Bolton, 2000) Endemic to this region
 * Strumigenys missouriensis Smith, M.R., 1931 Endemic to this region
 * Strumigenys mixta Brown, 1953
 * Strumigenys moreauviae Booher, 2021 Endemic to this region
 * Strumigenys nevermanni Brown, 1959
 * Strumigenys ornata Mayr, 1887
 * Strumigenys pergandei Emery, 1895
 * Strumigenys pilinasis Forel, 1901 Endemic to this region
 * Strumigenys pulchella Emery, 1895 Endemic to this region
 * Strumigenys reflexa Wesson, L.G. & Wesson, R.G., 1939 Endemic to this region
 * Strumigenys reliquia (Ward, 1988) Endemic to this region
 * Strumigenys rogeri Emery, 1890
 * Strumigenys rohweri Smith, M.R., 1935 Endemic to this region
 * Strumigenys rostrata Emery, 1895 Endemic to this region
 * Strumigenys silvestrii Emery, 1906
 * Strumigenys subnuda (MacGown & Hill, 2010) Endemic to this region
 * Strumigenys subtilis Booher, 2021 Endemic to this region
 * Strumigenys superstes Booher & Uhey, 2020 Endemic to this region
 * Strumigenys talpa Weber, 1934 Endemic to this region
 * Strumigenys wrayi (Brown, 1950) Endemic to this region

Syscia

 * Syscia augustae (Wheeler, W.M., 1902)
 * Syscia madrensis Longino & Branstetter, 2021
 * Syscia quisquilis Longino & Branstetter, 2021 Endemic to this region

Tapinoma

 * Tapinoma litorale Wheeler, W.M., 1905
 * Tapinoma melanocephalum (Fabricius, 1793)
 * Tapinoma schreiberi Hamm, 2010 Endemic to this region
 * Tapinoma sessile (Say, 1836)

Technomyrmex

 * Technomyrmex difficilis Forel, 1892
 * Technomyrmex vitiensis Mann, 1921

Temnothorax

 * Temnothorax adustus (Mackay, W.P., 2000)
 * Temnothorax allardycei (Mann, 1920)
 * Temnothorax ambiguus (Emery, 1895) Endemic to this region
 * Temnothorax americanus (Emery, 1895) Endemic to this region
 * Temnothorax anaphalantus Snelling, Borowiec & Prebus, 2014
 * Temnothorax andersoni (Mackay, W.P., 2000)
 * Temnothorax andrei (Emery, 1895)
 * Temnothorax arboreus Snelling, Borowiec & Prebus, 2014 Endemic to this region
 * Temnothorax bestelmeyeri (Mackay, W.P., 2000) Endemic to this region
 * Temnothorax bradleyi (Wheeler, W.M., 1913) Endemic to this region
 * Temnothorax bristoli (Mackay, W.P., 2000)
 * Temnothorax caguatan Snelling, Borowiec & Prebus, 2014
 * Temnothorax carinatus (Cole, 1957)
 * Temnothorax chandleri (Mackay, W.P., 2000) Endemic to this region
 * Temnothorax cokendolpheri (Mackay, W.P., 2000) Endemic to this region
 * Temnothorax coleenae (Mackay, W.P., 2000) Endemic to this region
 * Temnothorax curvispinosus (Mayr, 1866) Endemic to this region
 * Temnothorax duloticus (Wesson, L.G., 1937) Endemic to this region
 * Temnothorax emmae (Mackay, W.P., 2000)
 * Temnothorax fragosus (Mackay, W.P. & Buschinger, 2002) Endemic to this region
 * Temnothorax furunculus (Wheeler, W.M., 1909) Endemic to this region
 * Temnothorax gallae (Smith, M.R., 1949) Endemic to this region
 * Temnothorax hispidus (Cole, 1957)
 * Temnothorax josephi (Mackay, W.P., 2000) Endemic to this region
 * Temnothorax liebi (Mackay, W.P., 2000) Endemic to this region
 * Temnothorax longispinosus (Roger, 1863)
 * Temnothorax minutissimus (Smith, M.R., 1942) Endemic to this region
 * Temnothorax misomoschus Prebus, 2021
 * Temnothorax morongo Snelling, Borowiec & Prebus, 2014
 * Temnothorax myrmiciformis Snelling, Borowiec & Prebus, 2014
 * Temnothorax neomexicanus (Wheeler, W.M., 1903)
 * Temnothorax nevadensis (Wheeler, W.M., 1903)
 * Temnothorax nitens (Emery, 1895)
 * Temnothorax nuwuvi Snelling, Borowiec & Prebus, 2014 Endemic to this region
 * Temnothorax obliquicanthus (Cole, 1953)
 * Temnothorax obturator (Wheeler, W.M., 1903) Endemic to this region
 * Temnothorax oxynodis (Mackay, W.P., 2000) Endemic to this region
 * Temnothorax paiute Snelling, Borowiec & Prebus, 2014 Endemic to this region
 * Temnothorax palustris (Deyrup & Cover, 2004) Endemic to this region
 * Temnothorax pergandei (Emery, 1895)
 * Temnothorax pilagens Seifert, Kleeberg, Feldmeyer, Pamminger, Jongepier & Foitzik, 2014 Endemic to this region
 * Temnothorax politus (Smith, M.R., 1939)
 * Temnothorax pseudandrei Snelling, Borowiec & Prebus, 2014 Endemic to this region
 * Temnothorax quasimodo Snelling, Borowiec & Prebus, 2014 Endemic to this region
 * Temnothorax quercicola Prebus, 2021
 * Temnothorax rudis (Wheeler, W.M., 1917) Endemic to this region
 * Temnothorax rugatulus (Emery, 1895)
 * Temnothorax rugosus (Mackay, W.P., 2000)
 * Temnothorax schaumii (Roger, 1863) Endemic to this region
 * Temnothorax schmittii (Wheeler, W.M., 1903)
 * Temnothorax silvestrii (Santschi, 1911)
 * Temnothorax smithi (Baroni Urbani, 1978) Endemic to this region
 * Temnothorax stenotyle (Cole, 1956) Endemic to this region
 * Temnothorax subditivus (Wheeler, W.M., 1903)
 * Temnothorax terrigena (Wheeler, W.M., 1903)
 * Temnothorax texanus (Wheeler, W.M., 1903)
 * Temnothorax torrei (Aguayo, 1931)
 * Temnothorax tricarinatus (Emery, 1895) Endemic to this region
 * Temnothorax tuscaloosae (Wilson, 1951) Endemic to this region
 * Temnothorax wardi Snelling, Borowiec & Prebus, 2014 Endemic to this region
 * Temnothorax whitfordi (Mackay, W.P., 2000)

Tetramorium

 * Tetramorium atratulum (Schenck, 1852)
 * Tetramorium bicarinatum (Nylander, 1846)
 * Tetramorium caldarium (Roger, 1857)
 * Tetramorium guineense (Bernard, 1953)
 * Tetramorium hispidum (Wheeler, W.M., 1915)
 * Tetramorium immigrans Santschi, 1927
 * Tetramorium insolens (Smith, F., 1861)
 * Tetramorium lanuginosum Mayr, 1870
 * Tetramorium pacificum Mayr, 1870
 * Tetramorium simillimum (Smith, F., 1851)
 * Tetramorium spinosum (Pergande, 1896)
 * Tetramorium tsushimae Emery, 1925

Trachymyrmex

 * Trachymyrmex arizonensis (Wheeler, W.M., 1907)
 * Trachymyrmex carinatus Mackay, W.P. & Mackay, E.E., 1997
 * Trachymyrmex desertorum (Wheeler, W.M., 1911)
 * Trachymyrmex nogalensis Byars, 1951 Endemic to this region
 * Trachymyrmex pomonae Rabeling & Cover, 2007 Endemic to this region
 * Trachymyrmex septentrionalis (McCook, 1881)
 * Trachymyrmex smithi Buren, 1944

Trichomyrmex

 * Trichomyrmex destructor (Jerdon, 1851)

Veromessor

 * Veromessor andrei (Mayr, 1886)
 * Veromessor chamberlini (Wheeler, W.M., 1915) Endemic to this region
 * Veromessor chicoensis Smith, M.R., 1956 Endemic to this region
 * Veromessor lariversi (Smith, M.R., 1951) Endemic to this region
 * Veromessor lobognathus (Andrews, 1916) Endemic to this region
 * Veromessor pergandei (Mayr, 1886)
 * Veromessor pseudolariversi Johnson, Borowiec, Snelling & Cole, 2022 Endemic to this region
 * Veromessor smithi Cole, 1963 Endemic to this region
 * Veromessor stoddardi (Emery, 1895)

Vollenhovia

 * Vollenhovia emeryi Wheeler, W.M., 1906
 * Vollenhovia nipponica Kinomura & Yamauchi, 1992

Wasmannia

 * Wasmannia auropunctata (Roger, 1863)

Xenomyrmex

 * Xenomyrmex floridanus Emery, 1895