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  • north-eastern Atlantic  (5)
  • 1
    Publication Date: 2010-12-12
    Description: Forty leptolid species are described from the north-eastern Atlantic (Macaronesian area and the coasts of Mauritania and Morocco) and additional data are given for 44 leptolids described in previous reports. Two new species of Hydractinia and one new species of Zygophylax are described. Zygophylax echinata Calder & Vervoort, 1998 has been synonymized with Zygophylax sagamiensis Hirohito, 1983. The geographical boundaries of several species have been extended amongst which some (Hydractinia multitentaculata Millard, 1975; Hydractinia marsupialia Millard, 1975, Hydrocorella africana Stechow, 1921) that were hitherto considered to be endemic to South African oceanic waters. Halecium sessile Norman, 1867, turned up in the CANCAP collections after the publication of the report on Haleciidae from CANCAP (Medel & Vervoort, 2000) and is described here. All material described in the present report is preserved in the collections of the National Museum of Natural History Naturalis, Leiden, the Netherlands; the collection numbers of the samples and those of the microslide preparations are given in the text.
    Keywords: Cnidaria ; Hydrozoa ; Leptolida ; Anthoathecata ; Leptothecata ; Bougainvilliidae ; Pennariidae ; Zancleidae ; Hydractiniidae ; Oceanidae ; Eudendriidae ; Phialellidae ; Mitrocomidae ; Lovenellidae ; Campanulinidae ; Lafoeidae ; north-eastern Atlantic ; geographical distribution ; 42.79
    Repository Name: National Museum of Natural History, Netherlands
    Type: Article / Letter to the editor
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  • 2
    Publication Date: 2024-01-12
    Description: Twenty-one (sub)species of Leptolida (Hydrozoa, Cnidaria) of the familes Haleciidae and Campanulariidae are described and figured, originating from collections made during the CANCAP and Mauritania- II expeditions of the Rijksmuseum van Natuurlijke Historie (now Nationaal Natuurhistorisch Museum) to the north-eastern Atlantic in the years 1976-1988, visiting waters around the Azores, Canary Islands, Madeira, Cape Verde Islands and off Morocco and Mauritania. This material largely concerns well known species, the majority of which needs no detailed description. Exceptions are i.a. Halecium liouvillei Billard, 1934, Halecium sibogae marocanum Billard, 1934, Clytia arborescens Pictet, 1893, and Laomedea pseudodichotoma Vervoort, 1959. These species are described in more detail as their distributional area is extended. Of all species extensive literature references are given and the geographical distribution is discussed in detail.
    Keywords: Cnidaria ; Hydrozoa ; Leptolida ; Haleciidae ; Campanulariidae ; north-eastern Atlantic ; geographical distribution
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 3
    Publication Date: 2024-01-12
    Description: Forty-six species of the superfamily Plumularioidea (Hydrozoa, Cnidaria) and some material identified to the generic level, collected by the CANCAP and Mauritania-II expeditions of the Rijkmuseum van Natuurlijke Historie (now Nationaal Natuurhistorisch Museum) in the period 1976-1988, are described, as well as two other species that were used in the present study. In addition to the descriptions, synonymy, variability and geographical distribution are discussed; autoecological data and measurements are also presented. The new species described here are: Aglaophenia svobodai spec. nov., Streptocaulus caboverdensis spec. nov., S. chonae spec. nov., Antennella confusa spec. nov. and Nemertesia anonyma spec. nov. All species are figured. The general classification used follows Bouillon (1985, 1995); nomenclature on the species level is as used by Svoboda & Cornelius (1991), Ramil & Vervoort (1992a, 1992b), Calder (1997) and Schuchert (1997). The material originates from the seas and coasts around the Azores, Madeira, Selvagens, Canary Islands and Cape Verde Islands, as well as the Atlantic off Morocco and Mauritania, at depths varying between 0 and 4000 m. All species discussed have a wider, usually Atlantic distribution, with the exception of Streptocaulus pulcherrimus Allman, 1883, endemic in the Cape Verde area and Nemertesia belini Bedot, 1916, known only from the Azores and Cape Verde Islands.
    Keywords: Cnidaria ; Hydrozoa ; Leptolida ; Aglaopheniidae ; Halopterididae ; Kirchenpaueriidae ; Plumulariidae ; north-eastern Atlantic ; geographical distribution
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 4
    Publication Date: 2024-01-12
    Description: Forty leptolid species are described from the north-eastern Atlantic (Macaronesian area and the coasts of Mauritania and Morocco) and additional data are given for 44 leptolids described in previous reports. Two new species of Hydractinia and one new species of Zygophylax are described. Zygophylax echinata Calder & Vervoort, 1998 has been synonymized with Zygophylax sagamiensis Hirohito, 1983. The geographical boundaries of several species have been extended amongst which some (Hydractinia multitentaculata Millard, 1975; Hydractinia marsupialia Millard, 1975, Hydrocorella africana Stechow, 1921) that were hitherto considered to be endemic to South African oceanic waters. Halecium sessile Norman, 1867, turned up in the CANCAP collections after the publication of the report on Haleciidae from CANCAP (Medel & Vervoort, 2000) and is described here. All material described in the present report is preserved in the collections of the National Museum of Natural History Naturalis, Leiden, the Netherlands; the collection numbers of the samples and those of the microslide preparations are given in the text.
    Keywords: Cnidaria ; Hydrozoa ; Leptolida ; Anthoathecata ; Leptothecata ; Bougainvilliidae ; Pennariidae ; Zancleidae ; Hydractiniidae ; Oceanidae ; Eudendriidae ; Phialellidae ; Mitrocomidae ; Lovenellidae ; Campanulinidae ; Lafoeidae ; north-eastern Atlantic ; geographical distribution
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 5
    Publication Date: 2024-01-12
    Description: Twenty-three species, subspecies or varieties of hydroids of the families Thyroscyphidae and Sertulariidae (Leptolida, Hydrozoa, Cnidaria) are described and figured, originating from north-eastern Atlantic localities visited during the CANCAP and Mauritania-II Expeditions of the Rijksmuseum van Natuurlijke Historie (now Nationaal Natuurhistorisch Museum) in the years 1976-1988 and covering waters around Azores, Canary Islands, Madeira, Cape Verde Islands and the Atlantic off Morocco and Mauritania. Besides notes on the variability of the various species in the large material available, vertical and horizontal distributions are discussed. Observations on the considerable material of Sertularella ellisii (Deshayes & Milne-Edwards, 1836) indicate that this species cannot be separated from Sertularella fusiformis (Hincks, 1861); both species are consequently merged under the oldest available name: Sertularella ellisii (Milne Edwards & Haime, 1836). Also included are the European records of Sertularella gaudichaudi Auct., not to be confused with Sertularella gaudichaudi (Lamouroux, 1824) from the Falkland Islands. Sertularella unituba Calder, 1991, is recorded from many localities in the Cape Verde Islands region; these records represent the first from the eastern Atlantic.
    Keywords: Cnidaria ; Hydrozoa ; Leptolida ; Sertulariidae ; north-eastern Atlantic ; geographical distri- bution.
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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