Lygaeus varius Wolff, 1804: 148. ST(S): Europe; lost.
Lygaeus bimaculatus Zetterstedt, 1819: 73 (syn. Herrich-Schaeffer, 1835b: 76). LT (Péricart, 1997a: 71) male, Sweden, Esperöd; MZLU.
Pionosomus alloeonotus Reuter, 1900e: 125 (syn. Reuter, 1902a: 150). HT: Russia (NT), Konnewitz [= Konevets] Is. in Ladoga lake; lost.
Pionosomus opacellus var. lainzi Gómez-Menor, 1956: 69 (syn. nov.). HT: male, Spain, Santander, Oyambre; MNMS