Leptothorax (Leptothorax) tuberum var. nigricephala Karavaiev, 1930b: 146 (w.q.) SWEDEN (Gotland I., Oland I.). Palearctic.

Primary type information: Primary type material: syntype workers, syntype queens (numbers not stated). Primary type localities: Sweden: Gotland I., 25.v.-21.x.1927 (H. Lohmander), Sweden: Oland I., 9.v.-29.vii.1928 (H. Lohmander). Primary type depository: SIZK (perhaps also in NHRS).