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Colonies of the crustose anemone Hydrozoanthus antumbrosus completely enclose the central and secondary axial branches of the hydroid host Dentitheca dendritica (Nutting, 1900), but usually not the pinnate branches where the hydroid zooids are located.
The expanded polyps are dichromatic, the coenenchyma, body column, and oral discs are silvery brown, and the tentacles are golden.
Each polyp has between 30 to 38 tentacles ranging from 1.9 to 5.0 mm in length.
Hydrozoanthus antumbrosus was local to sites around Bonaire, Curaçao, and Sint Eustatius where strong currents were consistently present, which seems to be a requirement for the hydroid host species Dentitheca Stechow, 1920.
Etymology.
"Antumbra" is the astronomical term for the region where an occulting body appears, surrounded by the light source, producing an annular eclipse.
The coloring of the oral disk and tentacles resembles the appearance of an annular eclipse.
"umbra" is from the Latin noun (feminine) meaning shadow, used here as the masculine adjective antumbrosus, with the Latinized hydrozoanthus, from the Greek "anthos".
"Neuter", means flower.
Synonym: Isozoanthus antumbrosus Swain, 2009 - alternate representation
Source:
ReasearchGate
Authors: Montenegro, Hoeksema, Santos, Kise
Hexcorallia (Cnidaria: Hexacorallia) of the Dutch Caribbean with historical distribution records from the Atlantic and one new species of Parazoanthus
DOI:10.3390/d12050190
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
The expanded polyps are dichromatic, the coenenchyma, body column, and oral discs are silvery brown, and the tentacles are golden.
Each polyp has between 30 to 38 tentacles ranging from 1.9 to 5.0 mm in length.
Hydrozoanthus antumbrosus was local to sites around Bonaire, Curaçao, and Sint Eustatius where strong currents were consistently present, which seems to be a requirement for the hydroid host species Dentitheca Stechow, 1920.
Etymology.
"Antumbra" is the astronomical term for the region where an occulting body appears, surrounded by the light source, producing an annular eclipse.
The coloring of the oral disk and tentacles resembles the appearance of an annular eclipse.
"umbra" is from the Latin noun (feminine) meaning shadow, used here as the masculine adjective antumbrosus, with the Latinized hydrozoanthus, from the Greek "anthos".
"Neuter", means flower.
Synonym: Isozoanthus antumbrosus Swain, 2009 - alternate representation
Source:
ReasearchGate
Authors: Montenegro, Hoeksema, Santos, Kise
Hexcorallia (Cnidaria: Hexacorallia) of the Dutch Caribbean with historical distribution records from the Atlantic and one new species of Parazoanthus
DOI:10.3390/d12050190
This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
