Errinopsis fenestrata Cairns 1983
Errinopsis fenestrata Cairns, 1983a (Figs. 10, 11) Errinopsis fenestrata Cairns 1983a: 80–82, figs. 1i, 10a–g, map 3; Cairns & Macintryre 1992: 98, table 1; Cairns 2011: 9, fig. 7a; Cairns & Zibrowius 2013: 18–19, figs. 9a–i, 49, table 2, 51; Bax & Cairns 2014: 108–111, table 1, map 6 Di...
| Main Authors: | , , , |
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| Format: | Other/Unknown Material |
| Language: | unknown |
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Zenodo
2021
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| Subjects: | |
| Online Access: | https://doi.org/10.5281/zenodo.4792427 http://treatment.plazi.org/id/9E6F9574495CBA2BFF044613306FFDBE |
| Summary: | Errinopsis fenestrata Cairns, 1983a (Figs. 10, 11) Errinopsis fenestrata Cairns 1983a: 80–82, figs. 1i, 10a–g, map 3; Cairns & Macintryre 1992: 98, table 1; Cairns 2011: 9, fig. 7a; Cairns & Zibrowius 2013: 18–19, figs. 9a–i, 49, table 2, 51; Bax & Cairns 2014: 108–111, table 1, map 6 Distribution. Drake Passage and Shag Rocks, 280–340 m; South Africa: Eastern Cape Province, 174– 250 m. New record off Mar del Plata, 1398 m. Material examined. USNM 52693 (holotype) off Drake Passage, Eltanin St. 254 (59° 49.4’ S, 68° 51.7’ W); MACN-In 40646 off Mar del Plata, Argentina, St. 59 (37° 49.688’ S, 54° 5.236’ W), 1398 m, September 2013. Description. Colony uniplanar and 6.0 cm wide, attached to dead specimen of scleractinian Bathelia candida through several non-expansive bases (Fig. 10). Branching dichotomous and highly anastomotic producing a fenestrate fan. Branches rectangular to elliptical in cross section (Fig. 11a), with larger axis perpendicular to plane of growth. Basal branches 1.0– 1.4 mm wide at shorter margin of cross section and around 2.0 mm wide at longer margin. Diameter of branches more or less constant from base towards tips and between branches, except new branchlets, which may be less than 1.0 mm wide. Coenosteum compact, white and porcellaneous. Microtexture more or less linear-granular. Strips 24–59 µm wide and parallel to each other, sometimes more diagonal than parallel to branch axis, ocasionally bifurcating and rejoining. Slits deep, short or long. Granules rounded, flat and sparse in some zones and more conical and clustered in others, resulting in flat or more concave strips, respectively. Fig. 11b illustrates transition from granular-imbricate texture to smoother granular one. Gastropores round, 0.2–0.3 mm wide (n=7) and arranged in anterior and antero-lateral surface of branches (Fig. 11a). Branchlet usually forms at margin of gastropore (Fig. 11a). In more or less horizontal branches, branchlets generally originate at right margin of gastropore and develop diagonally downwards ... |
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