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Polychaeta source details
Gunton, Laetitia M.; Zhang, William; Kupriyanova, Elena K.; Hutchings, Pat A. (2023). New species of Melinna (Melinnidae, Annelida) from the Australian abyss with comments on M. albicincta, M. cristata and M. elisabethae. Records of the Australian Museum. 75(3): 125-154.
450985
10.3853/j.2201-4349.75.2023.1803 [view]
urn:lsid:zoobank.org:pub:B746588B-E743-4FCB-85CF-6AF186B1D22B [view]
Gunton, Laetitia M.; Zhang, William; Kupriyanova, Elena K.; Hutchings, Pat A.
2023
New species of <em>Melinna</em> (Melinnidae, Annelida) from the Australian abyss with comments on <em>M. albicincta</em>, <em>M. cristata</em> and <em>M. elisabethae</em>
Records of the Australian Museum
75(3): 125-154
Publication
World Polychaeta Database (WPolyD).
Available for editors
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A new species of Melinna (family Melinnidae) is described from the abyssal depths off the east coast of Australia. All material was collected during the RV Investigator voyage “Sampling the abyss” (IN2017_V03) in May–June 2017 from Bass Strait, Tasmania/Victoria using a beam trawl at 4197–4133 m depth. The new species Melinna hamulus sp. nov. differs from all other species of Melinna by having around 45 abdominal segments, dorsal membrane with 13–17 projections, four pairs of branchiae completely free and occurring in depths of over 4000 m. Phylogenetic relationships between our new species and other species within the family Melinnidae were assessed using the nuclear 18S and the mitochondrial 16S and cytochrome oxidase subunit I (COI) gene fragments. The results revealed that Melinna hamulus sp. nov. was genetically distinct from all other species of Melinnidae. This is the first species of Melinna to be described from Australian waters. We provide a new standard for description of species of Melinna and provide further detail on three existing species: Melinna albicincta Mackie & Pleijel, 1995, Melinna elisabethae McIntosh, 1914 and the type species of the genus Melinna cristata (Sars, 1851) using morphological characters illustrated with light and scanning electron microscopy pho-tographs. We provide a table with the main diagnostic characters of all described species of Melinna together with type localities and depths.
Tasmanian
Molecular systematics, Molecular biology
Systematics, Taxonomy
Melinna albicincta Mackie & Pleijel, 1995 (taxonomy source)
Melinna cristata (M. Sars, 1851) (taxonomy source) Melinna elisabethae McIntosh, 1885 (redescription) Melinna hamulus Gunton, Zhang, Kupriyanova & Hutchings, 2023 (original description)
Holotype AM W.50352, IN2017_V03, OPS 030, geounit Bass Strait, identified as Melinna hamulus Gunton, Zhang, Kupriyanova & Hutchings, 2023
Etymology authors: Melinna hamulus is "named hamulus meaning little hook in Latin, a reference to the small dorsal hooks of ... [details] Taxonomic remark Recorded earlier in Gunton et al (2021) as M. cf. armandi McIntosh. [details] Type locality Eastern Bass Strait between Tasmania and Victoria, Beam Trawl (start: 39°33'07"S 149°33'11"E, 4,197 m, end: ... [details] |