D. alaskensis (Fjellberg, 1978)

– Isotoma alaskensis Fjellberg, 1978: 94

AK Fjellberg 1978; MacLean et al. 1978; Christiansen & Bellinger 1980, 1998; Danks 1981; Skidmore 1995; Babenko & Fjellberg 2006

NT Rusek 1994

BC Setälä & Marshall 1994; Skidmore 1995; Cannings 2010

MB Porco et al. 2014

Remarks: Porco et al. (2014) detected two cryptic genetic lineages in this species in the vicinity of Churchill,

MB.

General distribution: Nearctic and Eastern Palaearctic.