Tetronarce cowleyi, sp. nov., a new species of electric ray from southern Africa (Chondrichthyes: Torpediniformes: Torpedinidae)
A new species of torpedo ray, Tetronarce cowleyi, sp. nov., is described from specimens collected from the southeastern Atlantic Ocean. The new species is placed in the genus Tetronarce based on a uniform dorsal coloration and absence of papillae around the spiracles. The new species is distinguishe...
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Mangolia Press
2015
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Online Access: | https://www.mapress.com/j/zt/article/view/zootaxa.3936.2.4 https://doi.org/10.11646/zootaxa.3936.2.4 |
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ftmagnoliapress:oai:ojs.mapress.com:article/34034 2023-05-15T17:34:48+02:00 Tetronarce cowleyi, sp. nov., a new species of electric ray from southern Africa (Chondrichthyes: Torpediniformes: Torpedinidae) Ebert, David A. haas, diane l. DE CARVALHO, MARCELO R. 2015-03-19 application/pdf https://www.mapress.com/j/zt/article/view/zootaxa.3936.2.4 https://doi.org/10.11646/zootaxa.3936.2.4 eng eng Mangolia Press https://www.mapress.com/j/zt/article/view/zootaxa.3936.2.4/37120 Copyright (c) 2016 Zootaxa Zootaxa; Vol 3936, No 2: 19 Mar. 2015; 237–250 1175-5334 1175-5326 10.11646/zootaxa.3936.2 Tetronarce electric ray new species Namibia South Africa Southeastern Atlantic Ocean Pisces info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2015 ftmagnoliapress https://doi.org/10.11646/zootaxa.3936.2.4 2019-10-22T15:03:43Z A new species of torpedo ray, Tetronarce cowleyi, sp. nov., is described from specimens collected from the southeastern Atlantic Ocean. The new species is placed in the genus Tetronarce based on a uniform dorsal coloration and absence of papillae around the spiracles. The new species is distinguished from its closest congeners, the North Atlantic Tetronarce nobiliana Bonnaparte, 1835, and southwestern Atlantic Tetronarce puelcha Lahille, 1926, by a combination of morphological characteristics including a shorter spiracular length, a proportionally greater head length as measured between snout margin and fifth gill openings, a proportionally greater preoral snout length, a uniform shiny black or dark gray dorsal surface, lacking any prominent markings, and a creamy white ventral color with dark edges in juveniles but fading with growth. Teteronarce cowleyi, sp. nov., is further distinguished from T. nobiliana by its more circular anterior disc shape (vs. relatively straight in T. nobiliana), fewer tooth rows (32/28 vs. 38–53/38–52 in T. nobiliana), greater mouth width (1.5–1.7 times as great as interorbital width vs. 0.5–0.6 times interorbital width in T. nobiliana), smaller distance between second dorsal and caudal fins (3.5–4.9% vs. 6.6–6.8% in T. nobiliana), and a clasper length extending nearly to lower caudal fin origin (claspers in T. nobiliana that extend only two-thirds distance between second dorsal and caudal fins). Teteronarce cowleyi, sp. nov., is known from Walvis Bay, Namibia to Algoa Bay, Eastern Cape, South Africa, at depths of 110 to 457 m. Article in Journal/Newspaper North Atlantic Magnolia press Lahille ENVELOPE(-64.368,-64.368,-65.544,-65.544) Zootaxa 3936 2 237 |
institution |
Open Polar |
collection |
Magnolia press |
op_collection_id |
ftmagnoliapress |
language |
English |
topic |
Tetronarce electric ray new species Namibia South Africa Southeastern Atlantic Ocean Pisces |
spellingShingle |
Tetronarce electric ray new species Namibia South Africa Southeastern Atlantic Ocean Pisces Ebert, David A. haas, diane l. DE CARVALHO, MARCELO R. Tetronarce cowleyi, sp. nov., a new species of electric ray from southern Africa (Chondrichthyes: Torpediniformes: Torpedinidae) |
topic_facet |
Tetronarce electric ray new species Namibia South Africa Southeastern Atlantic Ocean Pisces |
description |
A new species of torpedo ray, Tetronarce cowleyi, sp. nov., is described from specimens collected from the southeastern Atlantic Ocean. The new species is placed in the genus Tetronarce based on a uniform dorsal coloration and absence of papillae around the spiracles. The new species is distinguished from its closest congeners, the North Atlantic Tetronarce nobiliana Bonnaparte, 1835, and southwestern Atlantic Tetronarce puelcha Lahille, 1926, by a combination of morphological characteristics including a shorter spiracular length, a proportionally greater head length as measured between snout margin and fifth gill openings, a proportionally greater preoral snout length, a uniform shiny black or dark gray dorsal surface, lacking any prominent markings, and a creamy white ventral color with dark edges in juveniles but fading with growth. Teteronarce cowleyi, sp. nov., is further distinguished from T. nobiliana by its more circular anterior disc shape (vs. relatively straight in T. nobiliana), fewer tooth rows (32/28 vs. 38–53/38–52 in T. nobiliana), greater mouth width (1.5–1.7 times as great as interorbital width vs. 0.5–0.6 times interorbital width in T. nobiliana), smaller distance between second dorsal and caudal fins (3.5–4.9% vs. 6.6–6.8% in T. nobiliana), and a clasper length extending nearly to lower caudal fin origin (claspers in T. nobiliana that extend only two-thirds distance between second dorsal and caudal fins). Teteronarce cowleyi, sp. nov., is known from Walvis Bay, Namibia to Algoa Bay, Eastern Cape, South Africa, at depths of 110 to 457 m. |
format |
Article in Journal/Newspaper |
author |
Ebert, David A. haas, diane l. DE CARVALHO, MARCELO R. |
author_facet |
Ebert, David A. haas, diane l. DE CARVALHO, MARCELO R. |
author_sort |
Ebert, David A. |
title |
Tetronarce cowleyi, sp. nov., a new species of electric ray from southern Africa (Chondrichthyes: Torpediniformes: Torpedinidae) |
title_short |
Tetronarce cowleyi, sp. nov., a new species of electric ray from southern Africa (Chondrichthyes: Torpediniformes: Torpedinidae) |
title_full |
Tetronarce cowleyi, sp. nov., a new species of electric ray from southern Africa (Chondrichthyes: Torpediniformes: Torpedinidae) |
title_fullStr |
Tetronarce cowleyi, sp. nov., a new species of electric ray from southern Africa (Chondrichthyes: Torpediniformes: Torpedinidae) |
title_full_unstemmed |
Tetronarce cowleyi, sp. nov., a new species of electric ray from southern Africa (Chondrichthyes: Torpediniformes: Torpedinidae) |
title_sort |
tetronarce cowleyi, sp. nov., a new species of electric ray from southern africa (chondrichthyes: torpediniformes: torpedinidae) |
publisher |
Mangolia Press |
publishDate |
2015 |
url |
https://www.mapress.com/j/zt/article/view/zootaxa.3936.2.4 https://doi.org/10.11646/zootaxa.3936.2.4 |
long_lat |
ENVELOPE(-64.368,-64.368,-65.544,-65.544) |
geographic |
Lahille |
geographic_facet |
Lahille |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Zootaxa; Vol 3936, No 2: 19 Mar. 2015; 237–250 1175-5334 1175-5326 10.11646/zootaxa.3936.2 |
op_relation |
https://www.mapress.com/j/zt/article/view/zootaxa.3936.2.4/37120 |
op_rights |
Copyright (c) 2016 Zootaxa |
op_doi |
https://doi.org/10.11646/zootaxa.3936.2.4 |
container_title |
Zootaxa |
container_volume |
3936 |
container_issue |
2 |
container_start_page |
237 |
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1766133752867586048 |