Swedish records of Katatopygia sahlbergi
Original and used names: Boletina sahlbergi Lundström, 1906:14.
Swedish sources: Boletina sahlbergi: Edwards 1931:32 [TO]; Plassmann 1974:351 [LU]; Plassmann 1975c:28 [LU]; Plassmann 1975b:51 [LU]; Plassmann 1978b:149 [LU]; Zaitzev & Polevoi, 2001:643 [Swedish Lapland]; Boletina sahlbergi: Kjærandsen et al. 2007:45 [Boreal — •LU•TO•]; Katatopygia sahlbergi: Martinsson & Kjærandsen 2012:60 [•LU•TO•].
World distribution: Holarctic. Possibly boreal-alpine with records from Scandinavia, northern parts of European Russia, The Alps, West Siberia (Zaitzev & Polevoi 2002), Japan (Saigusa 1968) and Canada (Garrett 1925).
Remarks: The species has been confused with B. erythropyga Holmgren, 1883 and there still remain uncertainties concerning distribution data (Zaitzev & Polevoi 2001).