Chthonolasius Ruzsky, 1912 junior synonym of current valid taxon Lasius Fabricius, 1804
Chtonolasius Ruzsky, 1912: 630 [as subgenus of Lasius] Type-species: Formica umbrata (obsolete combination of Lasius umbratus), by subsequent designation of Emery, 1925d: 232.
Obsolete classifications
Citations

Extant: 0 valid species (1 obsolete combination), 0 valid subspecies (1 obsolete combination)