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 C. brevis ( Christiansen & Bellinger, 1980 ) Hypogastrura ( Ceratophysella ) brevis Christiansen & Bellinger, 1980: 155 AK Fjellberg 1985 , cf.; Skidmore 1995 ON Skidmore 1995 Remarks: As stated by Fjellberg (1985 , p. 43), these records “belong to a complex with several Nearctic forms/species, both described and undescribed, which are all poorly known and distinguished by rather small and dubious characters”. Babenko & Fjellberg (2006) speculate that some of these forms, northern ones in particular, may be conspecific with C. czelnokovi , a widespread and highly variable East Palaearctic species (see also Babenko et al. 2017 ). General distribution: Nearctic.