Two new species of Bargmannia (Pyrostephidae, Physonectae, Siphonophorae)
Two new species of Bargmannia (Pyrostephidae, Physonectae, Siphonophorae)
Two new deep-living species of the genus Bargmannia (Siphonophorae, Physonectae, Pyrostephidae) are described based, almost exclusively, on the nectophores of single specimens collected by ROVs off the west coast of California. The nectophores of B. stenotes sp. nov. were relatively small, up to 11.4 mm in length and, in the preserved condition had very narrow nectosacs. There was a marked bend in the distal part of the preserved nectophore, resulting in the ostium opening upwards. The mature nectophores of B. profunda sp. nov. were almost twice as long as those of B. stenotes and were characterised by the fact that the lower lateral ridges did not join, distally, with the meso-lateral ones. This feature also was present in smaller nectophores of B. amoena but those of B. stenotes, at that stage, did not have a mouth-plate.
74-82
Pugh, P. R.
aa54a60c-ee26-417d-bbbd-6ef53875c940
14 October 2019
Pugh, P. R.
aa54a60c-ee26-417d-bbbd-6ef53875c940
Pugh, P. R.
(2019)
Two new species of Bargmannia (Pyrostephidae, Physonectae, Siphonophorae).
Zootaxa, 4686 (1), .
(doi:10.11646/zootaxa.4686.1.3).
Abstract
Two new deep-living species of the genus Bargmannia (Siphonophorae, Physonectae, Pyrostephidae) are described based, almost exclusively, on the nectophores of single specimens collected by ROVs off the west coast of California. The nectophores of B. stenotes sp. nov. were relatively small, up to 11.4 mm in length and, in the preserved condition had very narrow nectosacs. There was a marked bend in the distal part of the preserved nectophore, resulting in the ostium opening upwards. The mature nectophores of B. profunda sp. nov. were almost twice as long as those of B. stenotes and were characterised by the fact that the lower lateral ridges did not join, distally, with the meso-lateral ones. This feature also was present in smaller nectophores of B. amoena but those of B. stenotes, at that stage, did not have a mouth-plate.
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Published date: 14 October 2019
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Local EPrints ID: 435903
URI: http://eprints.soton.ac.uk/id/eprint/435903
ISSN: 1175-5326
PURE UUID: e1d10e21-5cbf-4219-9542-da1db7d15239
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Date deposited: 22 Nov 2019 17:30
Last modified: 16 Mar 2024 05:14
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P. R. Pugh
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