{{short description|Genus of ants}} {{Automatic taxobox |image=Leptothorax acervorum casent0104845 profile 1.jpg |image_caption=''L. acervorum'' dealate queen |taxon=Leptothorax |display_parents = 3 |authority=Mayr, 1855 |type_species=''Formica acervorum'' |type_species_authority=Fabricius, 1793 |diversity_link=#Species |diversity=20 species |diversity_ref=<ref name="AntCat">{{AntCat|429929|''Leptothorax''|2014|accessdate=2018-12-03}}</ref> |synonyms=*''Doronomyrmex'' <small>Kutter, 1945</small> *''Mychothorax'' <small>Ruzsky, 1904</small> }}
'''''Leptothorax''''' is a genus of small ants with mainly Holarctic distributions. The genus is notable for its widespread social parasitism, i.e. they are dependent on the help of workers from other ant species during a part or the whole of their life cycles.{{citation needed|date=April 2014}}
Closely related genera are ''Cardiocondyla'', ''Stereomyrmex'' and ''Romblonella''.<ref name=Taylor_1991/>
==Species== {{div col|colwidth=30em}} *''Leptothorax acervorum'' <small>(Fabricius, 1793)</small> *''Leptothorax athabasca'' <small>Buschinger & Schulz, 2008</small> *''Leptothorax buschingeri'' <small>Kutter, 1967</small> *''Leptothorax calderoni'' <small>Creighton, 1950</small> *''Leptothorax canadensis'' <small>Provancher, 1887</small> *''Leptothorax crassipilis'' <small>Wheeler, 1917</small> *''Leptothorax faberi'' <small>Buschinger, 1983</small> *''Leptothorax goesswaldi'' <small>Kutter, 1967</small> *''Leptothorax gredleri'' <small>Mayr, 1855</small> *''Leptothorax kutteri'' <small>Buschinger, 1966</small> *''Leptothorax muscorum'' <small>(Nylander, 1846)</small> *''Leptothorax oceanicus'' <small>(Kuznetsov-Ugamsky, 1928)</small> *''Leptothorax pacis'' <small>(Kutter, 1945)</small> *''Leptothorax paraxenus'' <small>Heinze & Alloway, 1992</small> *''Leptothorax pocahontas'' <small>(Buschinger, 1979)</small> *''Leptothorax retractus'' <small>Francoeur, 1986</small> *''Leptothorax scamni'' <small>Ruzsky, 1905</small> *''Leptothorax sphagnicola'' <small>Francoeur, 1986</small> *''Leptothorax tibeticus'' <small>Seifert, 2023</small> *''Leptothorax wilsoni'' <small>Heinze, 1989</small> {{div col end}}
==References== {{Reflist|refs=
<ref name=Taylor_1991>{{cite journal |last=Taylor |first=Robert W. |date=1991 |title=Notes on the ant genera ''Romblonella'' and ''Willowsiella'', with comments on their affinities, and the first descriptions of Australian species. (Hymenoptera: Formicidae: Myrmicinae) |journal=Psyche: A Journal of Entomology |volume=97 |issue=3–4 |pages=281–298 |doi=10.1155/1990/29514|doi-access=free }}</ref>
}}
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Category:Leptothorax Category:Ant genera Category:Taxa named by Gustav Mayr Category:Taxonomy articles created by Polbot
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