Ethelia umbricola C.W.Schneider, A.K.Kivela & C.E.Lane 2015

Publication Details
Ethelia umbricola C.W.Schneider, A.K.Kivela & C.E.Lane 2015: 1167, 1168, fig. 8, A-G

Published in: Dixon, K.R., Saunders, C.W., Schneider, C.W. & Lane, C.E. (2015). Etheliaceae fam. nov. (Gigartinales, Rhodophyta), with a clarification of the generitype of Ethelia and the addition of six novel species from warm waters. Journal of Phycology 51(6): 1158-1171.

Publication date: 2015

Type Species
The type species (holotype) of the genus Ethelia is Ethelia biradiata (Weber Bosse) Weber Bosse.

Status of Name
This name is of an entity that is currently accepted taxonomically.

Type Information
Type locality: vic. middle buoy, blue hole cave, Eastern Blue Cut channel off Daniel's Head, Somerset Is. (32.389056°N, 64.888861°W), Bermuda, western Atlantic Ocean; (Dixon et al. 2015: 1168) Holotype: C.W. Schneider (CWS)/C.E. Lane (CEL) 09-34-17; March 20, 2009; 15-16 m; UNB; (Dixon et al. 2015: 1168) Notes: Isotypes: MICH, NY, Herb, CWS. Diagnostic DNA sequence: KT3107097.

Origin of Species Name
Noun (Latin), From the noun umbra (L., f.) = shade, and –cola (L. comp., indecl.) = dweller or inhabitant, thus literally “shade-dweller.”.

General Environment
This is a marine species.

Crusts cartilaginous, deep crimson to purplish-red, non-calcified, broadly spreading or branched and strap-like and conforming to, and firmly affixed to, the substrate over the entire ventral surface without rhizoids or peg-like haptera; thalli to 0.5–1.2 mm thick, composed of radiating files of cortical cells arising from deeply embedded, branched uniaxial primary filaments of conspicuously enlarged cells; upper cortical cell rows composed of regularly aligned cells, with the appearance of growth rings for subsequent years growth activity, thus the upper cortex often twice or more as thick as the lower cortex; axial cells 50-60 µm long and 100–140 µm diam. in longitudinal section, the cells appearing cylindrical and duct-like in transverse section; cortical cells 4.5–6.0 µm diam. and 7.5–15.0 µm long throughout, the distal cells square to rectangular in section at the upper surface, and rectangular to irregularly globose on the lower surface of the crusts, outer cortical cells irregularly rounded to ovoid in surface view, 4.5–9.0 µm in greatest dimension; reproduction not observed.

Crusts commonly inhabit reef areas at depths of 9–20 m that are greatly shaded, including submarine cave roofs and undersides of ledges, not directly exposed to penetrating light.

Key Characteristics
Differs from most species of Ethelia in lacking peg-like attachment haptera

Created: 28 January 2016 by G.M. Guiry.

Last updated: 23 April 2021

Verification of Data
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Citing AlgaeBase
Cite this record as:
Craig Schneider in Guiry, M.D. & Guiry, G.M. 23 April 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 02 October 2022

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