Hister deplanatum Gyllenhal, 1808, 85.
Platysoma sibiricum Reitter, 1879, 214; Mazur, 1970, 58 [Korea].
Platysoma (Platysoma) deplanatum: Ohara, 1986, 100; 1994, 93; ESK & KSAE, 1994, 137 [Korea].
[Hokkaido] Proper: Kiritachi pass, Tomamae-chô, Rumoi-shichô (1 ex., 27/vi/1987), A. Kashizaki; Minami-kitoushi, Ashoro (1 ex., 21/vii/1992), K. Haga; Kami-ashoro, Ashoro (1 ex., 4/vii/1993), K. Ito.
MO-02-057: Minami-Kitoushi, Ashoro, Hokkaido, Japan.