Leptohelia flexibilis gen. nov et sp nov., a remarkable deep-sea stylasterid (Cnidaria: Hydrozoa: Stylasteridae) from the southwest Pacific

被引:5
|
作者
Lindner, Alberto
Cairns, Stephen D. [1 ,2 ]
Zibrowius, Helmut
机构
[1] Univ Fed Santa Catarina, Ctr Ciencias Biol, Dept Ecol & Zool, BR-88040970 Florianopolis, SC, Brazil
[2] Smithsonian Inst, NMNH, Dept Invertebrate Zool, Washington, DC 20013 USA
基金
美国国家科学基金会;
关键词
evolution; systematics; New Caledonia; Norfolk Ridge; coral; WATER CORALS; DIVERSITY;
D O I
10.11646/zootaxa.3900.4.8
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
Leptohelia flexibilis gen. nov. et sp. nov., the first stylasterid with a combined calcified and non-calcified skeleton, is described from seamounts and the slope off the islands of New Caledonia, in the southwestern Pacific. The new species is distinguished from all other species of the family Stylasteridae by having a non-calcified organic axis, internal to the basal portion of the calcified corallum. The internal axis is flexible and enclosed by a series of up to 10 calcified annuli, allowing passive lateral bending of the colony. Molecular phylogenetic analyses confirm that Leptohelia flexibilis is a stylasterid coral and reveal that the species is closely related to Leptohelia microstylus comb. nov., a southwestern Pacific stylasterid that lacks an internal axis.
引用
收藏
页码:581 / 591
页数:11
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