* T. wahlgreni Axelson, 1907

– Tetracanthella wahlgreni Axelson, 1907: 129

AK Weber 1950; Hurd & Lindquist 1958

NU Folsom 1919a, 1937; Hammer 1938, 1953; Weber 1950; Danks 1981

Remarks: As written by Christiansen & Bellinger (1980, p. 521), “all of the specimens we have seen earlier identified as T. wahlgreni, and all Nearctic records of the latter species are probably misidentifications of T. arctica ”. Later (1998, p. 572), they added “or T. sibirica ” and “our own identifications of arctica listed below are probably either sibirica or undescribed species”.

General distribution: Palaearctic.

Unplaceable records of Tetracanthella sp.:

AK Watson et al. 1966

MB McClure 1943