Tanarctus gracilis Renaud-Mornant 1980

133. Tanarctus gracilis Renaud-Mornant, 1980

Tanarctus gracilis n. sp. (Renaud-Mornant 1980)

Terra typica: Atlantic Ocean (USA, North America)

Adriatic Sea:

• 40 ° 43.09′N, 17 ° 48.64′E ; 20 m bsl: [FAO37] Italy, Brindisi Province, Torre Guaceto, coarse sand. Accogli et al. (2011)

• 40 ° 34.38′N, 18 ° 0 9.49′E ; 10 m bsl: [FAO37] Italy, Brindisi Province, Mattarelle [Torre Mattarelle], ENEL power station, coarse sand. Accogli et al. (2011)

• 40 ° 27.24′N, 18°14.63′E ; 10 m bsl: [FAO37] Italy, Lecce Province, Lecce Bacino (San Cataldo), coarse sand. Accogli et al. (2011)

• 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, fine carbonate sand, carbonate sand, or fine shell sand. Hansen et al. (2001)

• 34°07.3′N, 75°57′W / 34°07′N, 75°57′W; 400 m bsl: [FAO31] Type locality: USA, North Carolina State, bathyal or abyssal depth, 6 cm deep in sand, fine sand with 17% clay. Renaud-Mornant (1980)

Balearic Sea:

• 40°49′N, 08°30′E; 0 m bsl: [FAO37] Italy, Sardinia, Sassari Province, Gulf of Asinara, medium and medium fine sand. D’Addabbo Gallo et al. (2007)

Indian Ocean:

• 04°15′N, 72°49′E; 19 m bsl: [FAO51] Republic of the Maldives, Ari Nord Atoll, coarse sand. Gallo et al. (2007)

• 03°29′N, 72°47′E; 22–23 m bsl: [FAO51] Republic of the Maldives, Ari Sud Atoll, coarse sand. Gallo et al. (2007)

• 11°32′,00S, 47°23′,02E [11°34′S, 47°24′E]; 615–625 m bsl: [FAO51] Comoros Archipelago, Mozambique Channel, coralline sand. Renaud-Mornant (1984a)

Ionian Sea:

• 40 ° 15.40′N, 17°52.57′E; 10 m bsl: [FAO37] Italy, Lecce Province, Porto Cesareo (marine protected area), coarse sand. Accogli et al. (2011)

• 40°13′90′′N, 17°54′59′′E [ 40°13′N, 17°55′E]; 0 m bsl: [FAO37] Italy, Lecce Province, San Isidoro [Sant’Isidoro]. Grimaldi de Zio et al. (2003)

• 40 ° 12.94′N, 17°5.07′E [40°13′N, 17°55′E]; 10 m bsl: [FAO37] Italy, Lecce Province, San Isidoro, coarse sand. Accogli et al. (2011)

• 39°52′00′′N, 16°42′30′′E; 20–200 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 & D’Addabbo Gallo (1987), Grimaldi de Zio et al. (2003)

• 39 ° 51.26′N, 18°23.55′E; 20 m bsl: [FAO37] Italy, Lecce Province, Gagliano, coarse sand. Accogli et al. (2011)

• 39 ° 51.26′N, 18°23.55′E; 50 m bsl: [FAO37] Italy, Lecce Province, Gagliano, fine sand. Accogli et al. (2011)

• 39 ° 58.71′N, 18°18.28′E [39°49′N, 18°18′E]; 10 m bsl: [FAO37] Italy, Lecce Province, San Gregorio, coarse sand. Accogli et al. (2011)

• 39 ° 58.71′N, 18°18.28′E [39°49′N, 18°18′E]; 20 m bsl: [FAO37] Italy, Lecce Province, San Gregorio, sand, coarse organogenous debris. Accogli et al. (2011)

• 39°48′40′′N, 18°40′38′′E [39°49′N, 18°19′E]; 0 m bsl: [FAO37] Italy, Lecce Province, San Gregorio. Grimaldi de Zio et al. (2003)

Tyrrhenian Sea:

• 38°36′N, 14°55′E; 40 m bsl: [FAO37[ Italy, Aeolian Islands, Secca del Capo, coralligenous bank, subtidal zone, coarse coralligenous detritus. Grimaldi de Zio & D’Addabbo Gallo (2001)

Record numbers (Sea/Ocean classification): Adriatic Sea: 5, Atlantic Ocean: 2, Balearic Sea: 1, Indian Ocean: 3, Ionian Sea: 9, Tyrrhenian Sea: 1; total: 21.

Record numbers (FAO classification): FAO27: 1, FAO31: 12, FAO37: 5, FAO51: 3; total: 21.

Remarks: This species was originally described from deep water (more than 400 m bsl), but later reported from intertidal and subtidal zones (less than 40 m bsl) of the Indian Ocean and the Mediterranean basin. In our opinion, these shallow subtidal records require confirmation.