An updated checklist of Canadian and Alaskan Collembola Author Babenko, Anatoly Author Stebaeva, Sophya Author Turnbull, Matthew S. text Zootaxa 2019 2019-05-02 4592 1 1 125 journal article 26934 10.11646/zootaxa.4592.1.1 e5152ce0-a14b-4e7a-a676-26b4765bc49c 1175-5326 2656929 B6FF005C-D0AA-4532-8ACC-43D3DED984EF 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.