Agathidium laevigatum Erichson, 1845: 98.
Type locality: Austria.
Agathidium affine Stephens, 1929: 182.
Type locality: Great Britain.
Agathidium helveticum Hlisnikovský, 1974: 110.
Type locality: Switzerland, Genève, Mategnin.
Agathidium (s.str.) laevigatum kostelniki Hlisnikovský, 1964a: 218. Type locality: South European Russia, Caucasus, Teberda. Agathidium (s.str.) languidum Hlisnikovský, 1967b: 247. Type locality: Mongolei, Central aimak, 126 km N von Ulan-Baator, am Wege in 1100 m Höhe. Agathidium (s.str.) laevigatum sibiricum Hlisnikovský, 1964a: 218. Type locality: Russia, Ost-Sibirien, Irkut-Quellgebiet. Agathidium (s.str.) teberdense Hlisnikovský, 1964a: 214. Type locality: South European Russia, Caucasus, Teberda.
Distribution in Iran. Guilan, Asalem, 450 m, 10.VI.1975 (leg. Senglet, MG) (Angelini 1988).
General distribution. Europe from Iberian peninsula north to Fennoscandia, Armenia, AZerbaijan, Cyprus, Georgia, Iran, Israel, Mongolia, Russia (European and Asian territories), Turkey, Himalaya (north India, Sikkim, Nepal and Bhutan) (Angelini 1995; Perreau 2015).