No subspecies are recognized.
Scaeva obscura Zetterstedt, 1838 (nec Say, 1824; junior primary homonym)
Syrphus obscurus (Zetterstedt, 1838)
Dasysyrphus obscurus (Zetterstedt, 1838)
Syrphus nigricornis Verrall, 1873 (new replacement name)
Dasysyrphus nigricornis (Verrall, 1873)
Syrphus obscuratus Ringdahl, 1928
Syrphus nigrolimbatus Duda, 1940
Syrphus nigricornis obscuraticeps Frey, 1950
Dasysyrphus pauxillus auct. nec Williston, 1887 (misidentification; see note)
Note: until recently, this species has been known in Europe under the name "Dasysyrphus pauxillus". However,
Locke and Skevington (2013)
provide strong evidence that the true Dasysyrphus pauxillus is
restricted to the western USA and western Canada. Specimens from
elsewhere in the USA and Canada, and in Europe that were previously
identified as "Dasysyrphus pauxillus" are in fact Dasysyrphus
nigricornis.
No information has been entered yet.
The original taxon obscura (and its replacement name nigricornis) has
been described from Sweden. Apart from Sweden, the distribution of this
species is unclear. The synonymous taxon obscuraticeps has been
described from Finland, indicating that the species may be more
widespread in Scandinavia. The synonymous taxon nigrolimbatus has been
described with "bei Nimptsch, Habelschwerdt und Rauden (Schlesien)" as
the type localities. The first two places are Niemcza and Bystrzyca
Klodzka (both part of Poland today). The third location must be Rauden, a part of the German municipality
Boxberg-Oberlausitz (Lower Silesia). This suggests that the species is
present in Central Europe as well, including Poland and Germany.
More recently, the species has also been reported from Greenland, USA
and Canada where it had previously been misidentified as Dasysyrphus
pauxillus (see analysis in
Locke and Skevington 2013).
Similarly, specimens misidentifed as "Dasysyrphus pauxillus" have been
recorded in several European countries including Germany: published records of "Dasysyrphus pauxillus" include e.g. Macedonia (
Krpac et al. 2009), Germany (
Von der Dunk 2005), the Netherlands (
Reemer 2002).
No information has been entered yet.