Tachidius discipes Giesbrecht, 1881

Dimante-Deimantovica, I., Jensen, T. C. & Walseng, B., 2016, Freshwater harpacticoids (Crustacea: Copepoda: Harpacticoida) in Norway – a comprehensive contribution from G. O. Sars, and a provisional checklist, Journal of Natural History 50 (29), pp. 1773-1795 : 16

Tachidius discipes Giesbrecht, 1881

References and records from Norway

Tachidius brevicornis (Müller) , Lilljeborg, 1853 – Boeck (1865): 257; Sars (1911): 328 – 330; Brehm (1917): 609 – 623.

Trachidius brevicornis, Lilljeborg, 1853 – Sars (1863b): 54.

Tachidius arcticus sp. nov. – Olofsson (1917): 36.

Tachidius spitzbergiensis sp. nov. – Olofsson (1917): 32 – 34.

Tachidius spitzbergiensis Olofsson (1917) – Olofsson (1918): 183 – 646.

Tachidius discipes Giesbrecht, 1881 – Scott (1903): 10 – 11.

Olofsson (1917, 1918) considered T. spitzbergiensis a distinct, valid species, morphologically very close to T. discipes but still clearly distinguishable. Olofsson (1917, 1918) recorded it from freshwater habitats in the Advent Bay and from brackish-water habitats at Billen Bay and a brackish lagoon near Nordenskiold Glacier ( Svalbard, Spitsbergen). The description of T. arcticus by Olofsson (1917) is based on material consisting of a single male specimen found in a brackish-water habitat at Green Harbour, Svalbard. This species is also considered a junior subjective synonym of T. discipes .

This species was recorded from Spitsbergen (Brehm 1917), but without further indications about the exact locality. Sars (1863b, 1911) reported this species from the Norwegian mainland, a shallow creek of the Oslofjord and brackish waters in many other places on the South and West coasts of Norway. This species seems to be tolerant of a wide range of salinity and is reported from Norway (marine habitat) by several other authors – Oslofjord (Boeck 1865), Bogfjord – Northern Norway (Scott 1903).