Raiarctus colurus Renaud-Mornant, 1981a

Kaczmarek, Łukasz, Bartels, Paul J., Roszkowska, Milena & Nelson, Diane R., 2015, The Zoogeography of Marine Tardigrada, Zootaxa 4037 (1), pp. 1-189 : 96

100. Raiarctus colurus Renaud-Mornant, 1981a

Raiarctus colurus n. sp. ( Renaud-Mornant 1981a)

Raiarctus colurus Renaud-Mornant 1981 (Grimaldi de Zio et al. 1983a) 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: [FAO37] 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: [FAO37] 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: [FAO27] 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: [FAO31] Guadeloupe Islands, Grande-Terre Island, Ilet la Gourde [Anse á la Gourde], beach, 35 cm deep in sand, coral sand. Renaud-Mornant (1981a)

Caribbean Sea:

• 16°12.5′N, 61°29.4′W / 16°13′N, 61°29′W; 0 m bsl: [FAO31] 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: [FAO31] Type Locality: Guadeloupe Islands, Grande-Terre Island, Le Gosier, beach, 55 cm deep in sand, coral sand (0.235 mm). Renaud-Mornant (1981a)

Celtic Sea:

• 48°44′N, 03°59′W; 0 m bsl: [FAO27] 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: [FAO37] Italy, Tarento Province, offshore of Chiatona, Secca dell’Armeleia, Amphioxus debris. Grimaldi de Zio et al. (1983a)

• 39°52′00′′N, 16°42′30′′E; 20–80 m bsl: [FAO37] 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): FAO27: 2, FAO31: 3, FAO37: 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.