Lygaeosoma sibiricum Seidenstücker, 1962d: 152. HT: male (subbrach.), Russia (ES), Irkutsk; ZMAS.
Lygaeosoma sibiricum f. rufa Seidenstücker, 1962d: 156 (unavailable name). HT: female (subbrach.), Kazakhstan, Karaganda Prov. [now in Dzhezkazgan Prov.], 40 km S of Zhana-Arka; ZMAS.