Lasius silvaticus Seifert, 2020a: 47, figs. 3, 4 (w.) IRAN. Palearctic.

Primary type information: Primary type material: holotype worker. Primary type locality: Iran: 36.7198°N, 54.5813°E, Gorgan 19SE, 853 m, 15.vi.2016-19, Caspian mild and wet (A.B. Yazdi). Primary type depository: SMNG. Secondary type information: Secondary type material: 11 paratype workers. Secondary type locality: 2 paratype workers with same data as holotype; 3 paratype workers with same data as holotype but 15.vi.2016-24; 3 paratype workers Iran: 37.367°N, 55.817°E, Golestan NP, Galesha canyon, 594 m, forest, nest on tree, 23.v.2007-1420 (Paknia); 3 paratype workers with same data as previous but forest, nest under stone. Secondary type depository: SMNG.