Nacella MACQUARIENSIS FINLAY 1926
Description
NACELLA MACQUARIENSIS FINLAY, 1926
Nacella fuegiensis – Suter, 1913: 77 (not of Reeve).
Nacella delesserti – Hedley 1916: 42, pl. 6, figs 65–69 (not of Philippi).
Nacella macquariensis Finlay, 1926: 337; Lindberg, 2008: 272; González-Wevar et al., 2017: 862.
Patinigera macquariensis – Powell, 1955: 68; Dell, 1964: 274.
Nacella (Patinigera) macquariensis – Powell, 1973: 199 (in part), pl. 182, figs 1, 2.
Material studied: For this revision we only had access to tissue samples obtained from ten individuals collected at Garden Cove (54°29’59.15’’ S, 158°56’09.38’’ E), Macquarie Island.
Shell: According to Powell (1973), the shell of this species is moderately large, up to 63 mm in length, strong but of light build. Its shape is narrowly ovate and elevated but varying to rather broadly ovate and depressed. The sculpture consists of 32 to 35 broadly rounded, primary radial ribs, plus narrower secondary intermediate radials, mostly over the posterior half of the shell. The whole surface is crowded with low concentric growth lamellae that do not thicken to any extent on the crest of the radials. The external colour is olive to chestnut-brown; internally, it is diffused and strongly rayed in bronzy reddish brown, the spatula being well-marked, variously blotched with reddish brown, and often almost completely white-callused.
Distribution: Macquarie Island.
Habitat: This species occurs from the high and medium intertidal rocky ecosystem down to 25 m.
Comments: Multi-locus mtDNA and nucDNA reconstructions indicate that Nacella macquariensis from Macquarie Island represents a separate, diagnosable taxonomic unit, closely related to N. edgari (Kerguelen and Heard Islands) and N. terroris (Campbell Island). Accordingly, the distribution of N. macquariensis is restricted to the Macquarie Islands and the species is not present at Kerguelen and Heard (contra Powell, 1973).
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Nacellidae
- Genus
- Nacella
- Kingdom
- Animalia
- Order
- Patellida
- Phylum
- Mollusca
- Scientific name authorship
- MACQUARIENSIS FINLAY
- Taxon rank
- genus
- Taxonomic concept label
- Nacella FINLAY, 1926 sec. González-Wevar, Hüne, Rosenfeld, Nakano, Saucède, Spencer & Poulin, 2019
References
- Finlay HJ. 1926. A further commentary on New Zealand molluscan systematics. Transactions and Proceedings of the New Zealand Institute 57: 320 - 485.
- Suter H. 1913. Manual of the New Zealand Mollusca. Wellington, New Zealand: Government Printer.
- Hedley C. 1916. Report on Mollusca from elevated marine beds ' Raised Beaches' of McMurdo Sound. British Antarctic Expedition 1907 - 1909, Geology 2: 85 - 88.
- Lindberg DR. 2008. Patellogastropoda, Neritimorpha and Cocculinoidea. The low diversity gastropods clades. In: Ponder WF, Lindberg DR, eds. Phylogeny and evolution of the Mollusca. Berkeley, Los Angeles, London: University of California Press, 271 - 296.
- Gonzalez-Wevar CA, Hune M, Segovia NI, Nakano T, Spencer HG, Chown S, Saucede T, Johnstone G, Mansilla A, Poulin E. 2017. Following the Antarctic Circumpolar Current: patterns and processes in the biogeography of the limpet Nacella (Mollusca: Patellogastropoda) across the Southern Ocean. Journal of Biogeography 44: 861 - 874.
- Powell AWB. 1955. Mollusca of the Southern Islands of New Zealand. Cape Expedition Series Bulletin N ° 15. Wellington, New Zealand: Department of Scientific and Industrial Research.
- Dell, RK. 1964. Marine Mollusca from Macquarie and Heard Islands. Records of the Dominion Museum 4: 267 - 301.
- Powell AWB. 1973. The patellid limpets of the World (Patellidae). In: Abbot RT ed. Indo-Pacific Mollusca: monographs of the marine mollusks of the world with emphasis on those of the tropical western Pacific and Indian Oceans, Vol. 3. Auckland, New Zealand: Auckland Institute and Museum.