Placotrochides frustum Cairns, 1979

Cairns, Stephen D., 2016, A key to the genera and species of the transversely-dividing Flabellidae (Anthozoa, Scleractinia, Flabellidae), with a guide to the literature, and the description of two new species, ZooKeys 562, pp. 1-48 : 24

publication ID

https://dx.doi.org/10.3897/zookeys.562.7310

publication LSID

lsid:zoobank.org:pub:D11C6C1E-6EE7-4C8D-A560-331E75947EC8

persistent identifier

https://treatment.plazi.org/id/FAFD2CDA-ED77-476F-20F5-1D88519BC5E3

treatment provided by

ZooKeys by Pensoft

scientific name

Placotrochides frustum Cairns, 1979
status

 

Taxon classification Animalia Scleractinia Flabellidae

Placotrochides frustum Cairns, 1979 View in CoL Fig. 12B

Placotrochides frusta Cairns, 1979: 152-153, pl. 29, figs 4-6, 8-9, map 43.

Placotrochides frustra : Zibrowius 1980: 159-161, pl. 81E-M.

Placotrochides frustum : Cairns 2004: 307 (key, nom. correct.).

New records.

CRYOS, Balgim CP85, 34°24'N, 7°39'W, 1378 m, 15 specimens, MNHN; Professor Logachev 37L 165, 16°54.014'N, 46°34.842'W, 2646-2705 m, 6 Mar 2015, 1, USNM 1295415, 1, IOM Moscow; Professor Logachev 37L 188, 17°08.470'N, 46°23.443'W, 2291-2327 m, 12 Mar 2015, 1, IOM Moscow.

Distribution.

Lesser Antilles, off northeastern Brazil, mid-Atlantic Ridge at latitude of Lesser Antilles, off Morocco, 497-2646 m.

Remarks.

The specimens reported herein from the mid-Atlantic Ridge are much larger than any previously reported, having a GCD up to 10.2 mm and a height of 13.9 mm, the calice having corresponding more septa, i.e., S1-2>S3>S4, 12:12:12, or 36 septa. The largest previously known specimen was only 5.0 mm in GCD and had 26 septa. They also represent a considerable depth range extension.