Styraconyx hallasi n. sp. (Kristensen 1977)
S. hallasi Kristensen, 1977 (D’Addabbo Gallo et al. 1987)
Terra typica: Baffin Bay (Greenland, Arctic)
Baffin Bay:
• 69 ° 29 ′N, 53 ° 57 ′E; 0 m bsl: [FAO 27] West Greenland, Disko Island, Diskofjord, Tarajungitsok, radioactive, warm spring. Kristensen & Higgins (1984 a)
• 69 ° 16 ′N, 53 ° 38 ′W; 0 m bsl: [FAO 21] Type locality: West Greenland, Qaasuitsup municipality, Disko Island, the littoral zone between Godhavn and Fortune Bay, a small warm spring near Engelskomandens Havn, bluegreen and green algae. Kristensen (1977), Kristensen & Higgins (1984 a)
Ionian Sea:
• 39 ° 52 ′ 27 ′′N, 16 ° 43 ′ 25 ′′E; 20–80 m bsl: [FAO 37] Italy, Cosenza Province, High Ionian Sea offshore, Calabrian Coast, Amendolara Shoal, coralligenous sand, coralligenous sand mixed with debris, coarse medium or fine coralligenous sand (few samples). D’Addabbo Gallo et al. (1987)
Record numbers (Sea/Ocean classification): Baffin Bay: 2, Ionian Sea: 1; total: 3.
Record numbers (FAO classification): FAO 21: 1, FAO 27: 1, FAO 37: 1; total: 3.
Remarks: This species from the hallasi group was described from warm, radioactive, freshwater or slightly salty springs along the coast of Greenland, and later it was reported from the subtidal zone in the Ionian Sea. In our opinion, based on the specific habitat of the type locality, the presence of this species in marine subtidal environments of the Ionian Sea needs confirmation. It is the only example of a member of a marine genus in freshwater habitats (but see also Echiniscoides s. sigismundi).