Raiarctus colurus n. sp. (Renaud-Mornant 1981 a)
Raiarctus colurus Renaud-Mornant 1981 (Grimaldi de Zio et al. 1983 a) R. colurus Renaud-Mornant, 1981 (D’Addabbo Gallo et al. 1987)
Raiarctus colurus (Jørgensen et al. 2010)
Terra typica: Caribbean Sea (Guadeloupe Islands)
Adriatic:
• 40 ° 27.24 ′N, 18 ° 14.63 ′E [40 ° 22 ′N, 18 ° 20 ′E]; 10 m bsl: [FAO 37] Italy, Lecce Province, Ceisne (Marne protected area), coarse sand. Accogli et al. (2011)
• 40 ° 27.17 ′N, 18 ° 14.58 ′E [40 ° 22 ′N, 18 ° 20 ′E]; 10 m bsl: [FAO 37] Italy, Lecce Province, Ceisne (Marne protected area), coarse sand. Accogli et al. (2011)
Atlantic Ocean:
• 61 ° 17 ′ 42 ′′N, 08° 32 ′ 18 ′′W; 104–260 m bsl: [FAO 27] Faroe Islands, Faroe Bank, shell gravel, coarse shell gravel, carbonate fine sand, carbonate sand, or fine shell sand. Hansen et al. (2001)
• 16 ° 16 ′N, 61 ° 13 ′W; 0 m bsl: [FAO 31] Guadeloupe Islands, Grande-Terre Island, Ilet la Gourde [Anse á la Gourde], beach, 35 cm deep in sand, coral sand. Renaud-Mornant (1981 a)
Caribbean Sea:
• 16 ° 12.5 ′N, 61 ° 29.4 ′W / 16 ° 13 ′N, 61 ° 29 ′W; 0 m bsl: [FAO 31] Guadeloupe Islands, Grande-Terre Island, Le Gosier, beach, intertidal, fine sand (mean diameter 0.225 mm). Renaud-Mornant & Gourbault (1981, 1984)
• 16 ° 11 ′ 40 ′′N, 61 ° 29 ′W; 0 m bsl: [FAO 31] Type Locality: Guadeloupe Islands, Grande-Terre Island, Le Gosier, beach, 55 cm deep in sand, coral sand (0.235 mm). Renaud-Mornant (1981 a)
Celtic Sea:
• 48 ° 44 ′N, 03° 59 ′W; 0 m bsl: [FAO 27] France, Brittany Region, Roscoff, Roscoff Marine Biological Station. Jørgensen et al. (2010)
Ionian Sea:
• 40 ° 29 ′00′′N, 17 °03′ 25 ′′E; 15 m bsl: [FAO 37] Italy, Tarento Province, offshore of Chiatona, Secca dell’Armeleia, Amphioxus debris. Grimaldi de Zio et al. (1983 a)
• 39 ° 52 ′00′′N, 16 ° 42 ′ 30 ′′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), Grimaldi de Zio et al. (2003)
Record numbers (Sea/Ocean classification): Adriatic Sea: 2, Atlantic Ocean: 2, Caribbean Sea: 2, Celtic Sea: 1, Ionian Sea: 2,; total: 9.
Record numbers (FAO classification): FAO 27: 2, FAO 31: 3, FAO 37: 4; total: 9.
Remarks: This is a rare species with a disjunct distribution known only from a few intertidal and subtidal localities (sometimes more than 100 m bsl) in temperate and tropical zones, mainly in the northern hemisphere. It has been recorded from different types of sand.