| Lasius pallitarsis (Provancher, 1881) |
| Lasius silvestrii Wheeler, 1928 |
| Lasius sitiens Wilson, 1955 |
| Lasius sitkaensis Pergande, 1900 |
| Lasius subumbratus Viereck, 1903 |
| Lasius transylvanica Röszler, 1943 |
| Lasius umbratus (Nylander, 1846) |
| Lasius umbratus subsp. subumbratus Viereck, 1903 |
| Leiopelta Baroni Urbani, 1975 |
| Leptalea Erichson |
| Leptaleinae Smith, 1951 |
| Leptanilloides Mann, 1923 |
| Leptanilloides gracilis Borowiec & Longino, 2011 |
| Leptogenys Roger, 1861 |
| Leptogenys (Lobopelta) Mayr, 1862 |
| Leptogenys (Machaerogenys) Emery, 1911 |
| Leptogenys (Odontopelta) Emery, 1911 |
| Leptogenys chamela Lattke, 2011 |
| Leptogenys consanguinea Wheeler, 1909 |
| Leptogenys cordoba Lattke, 2011 |