Lasius obscuratus, Stitz, 1930

Seifert, Bernhard, 2020, A taxonomic revision of the Palaearctic members of the subgenus Lasius s. str. (Hymenoptera, Formicidae), Soil Organisms 92 (1), pp. 15-86 : 22

Lasius obscuratus species complex

Mean number of mandibular dents not reduced (MaDe 900 8.1–8.4). Scape and head not elongated (SL/ CS 900 0.926 –0.962, CL/CW 900 1.059 –1.087). Dorsum of scape without or with few semierect setae (nSc 900 0.4- 0.8). Hind margin of head always with rather many setae (nOcc 900 8.2–11.0). Four species: Lasius obscuratus Stitz 1930 , Lasius piliferus Seifert 1992 , Lasius psammophilus Seifert 1992 and Lasius creticus sp. nov.