D. tshernovi (Martynova, 1974)

– Isotoma tshernovi Martynova, 1974: 796

– Isotoma nanseni Fjellberg, 1978: 105

AK Fjellberg 1978, 1979; MacLean et al. 1978; Danks 1981; Christiansen & Bellinger 1980; Skidmore 1995 all as nanseni; Christiansen & Bellinger 1998; Potapov 2001; Babenko & Fjellberg 2006

NU Fjellberg 1986, 1994; Babenko 1993 both as nanseni; Fjellberg 1995; Potapov 2001; Niwranski et al. 2002; Hogg & Hebert 2004

General distribution: Northern Holarctic.