Calcigorgia matua, Dautova, 2018

Dautova, Tatiana N., 2018, Two new species of deep-water Calcigorgia gorgonians (Anthozoa: Octocorallia) from the Kurile Islands, Sea of Okhotsk, with a review of distinctive characters of the known species of the genus, European Journal of Taxonomy 408, pp. 1-22 : 3-4

Calcigorgia matua sp. nov.

urn:lsid:zoobank.org:act:DB4011CF-7B0E-4022-B39F-4E7A30B58E26

Figs 1–5; Table 1

Diagnosis

Polyps remote of each other, arranged irregularly on the surface of the branch, in alcohol-preserved material 1–5 mm high and 2.5 mm wide. Body walls of polyps have a smooth surface; the lower part of the polyp is slightly widened. In the tentacles and the body wall, and in the coenenchyme, sclerites are unordered.

Polyp tentacles contain: (1) flattened sclerites; (2) clubs, up to 0.14 mm long, with a warty handle and leafy processes on the head; (3) clubs, up to 0.15 mm long, with warty heads, and (4) warty spindles, up to 0.18 mm long. The polyp body walls contain: (1) clubs, up to 0.14 mm long, with a warty handle and leafy processes on the head; (2) clubs, up to 0.15 mm long, with warty heads; (3) capstans and 8-radiates, up to 0.17 mm long; and (4) warty spindles, up to 0.18 mm long. The outer layer of coenenchyme is densely filled with capstans (8-radiates), up to 0.15 mm long, and may contain well calcified ovals of same size. Warty spindles up to 0.15 mm long and leafy clubs, up to 0.9 mm long, are also present here along with warty clubs up to 0.15 mm long.

Etymology

The specific epithet is after Matua Island (Kurile Islands, Sea of Okhotsk), nearest to the locality where the holotype was found.

Type material

Holotype

KURILE ISLANDS: 65 × 25 mm, sample 901, Expedition of PFRC and ZIN RAS on RV “Tikhookeansky”, station 308, east of Matua Is., 48°01′ N, 153°22.03′ E, 300 m, dredged, 20 Aug. 1987, S. Grebelnyi leg. ( MIMB 20722 ).

Paratype

KURILE ISLANDS: 1 specimen, 75 × 27 mm, Cruise No 34 of PFRC and ZIN RAS on RV “Odyssey”, station 27, east of Ketoy Is. , 47°16.7′ N, 152°48.7′ E, 900 m, dredged, 10 Jan. 1985 ( MIMB 20724 ).

Additional material

KURILE ISLANDS: 2 specimens, near Lovushki Rocks, cruise No 33 of ZIN RAS on RV “Odyssey” , 48°02′ N, 154°24′ E, 400 m, dredged, 3 Aug. 1984 ( ZIN RAS 11807 , ZIN RAS 11808 ) ; 1 specimen, same collecting data as previous, but 8 Aug. 1984 ( ZIN RAS 11809 ).

Comparative material examined