Two New Species of Psammonyx and the Identity of the Genus Wecomedon (Amphipoda, Gammaridea)
Two new species of the genus Psammonyx Bousfield, 1973: P. tzvetkovae sp. nov., and P. kudrjaschovi sp. nov. - are described based on the materials collected from the Sakhalin shelf. Psammonyx tzvetkovae is similar to both Wecomedon similis Jarret and Bousfield, 1982 and P. kurilicus (Gurjanova, 196...
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Seto Marine Biological Laboratory, Field Science Education and Research Center, Kyoto University
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ftkyotouniv:oai:repository.kulib.kyoto-u.ac.jp:2433/176321 2023-05-15T18:09:12+02:00 Two New Species of Psammonyx and the Identity of the Genus Wecomedon (Amphipoda, Gammaridea) Budnikova, L. L. 2005-12-25 application/pdf http://hdl.handle.net/2433/176321 eng eng Seto Marine Biological Laboratory, Field Science Education and Research Center, Kyoto University 京都大学フィールド科学教育研究センター瀬戸臨海実験所 10.5134/176321 0037-2870 http://hdl.handle.net/2433/176321 AA00713575 PUBLICATIONS OF THE SETO MARINE BIOLOGICAL LABORATORY 40 3-4 179 197 2189-2695 468.8 departmental bulletin paper 2005 ftkyotouniv 2021-09-23T23:15:40Z Two new species of the genus Psammonyx Bousfield, 1973: P. tzvetkovae sp. nov., and P. kudrjaschovi sp. nov. - are described based on the materials collected from the Sakhalin shelf. Psammonyx tzvetkovae is similar to both Wecomedon similis Jarret and Bousfield, 1982 and P. kurilicus (Gurjanova, 1962). However, it differs from W. similis in having shorter interantennal lobe, more oblique palm of gnathopod 1 and different length of articles 5 and 6 of gnathopod 2. Psammonyx tzvetkovae is distinguished from P. kurilicus in having eyes, the absence of a saddlelike depression on urosomit 1, the shape and armament of article 6 of gnathopods 1 and 2, the absence of a "pineapple pad" on article 5 of gnathopod 2 and other characters. Psammonyx kudrjaschovi is closely related to Hippomedon denticulatus (Bate, 1857) and P. longimerus Jarret and Bousfield, 1982 in having epimeron 3 with a slender, tapering posterodistal tooth, dorsal margin with a distinct notch bearing 1 short seta. But it differs from the former species primarily in a short flagellar article l of antenna l, and is separated from the latter in the presence of "ineapple pad" on article 5 of gnathopod 2, the diagonal keel on epimeron 2, and the wider coxal plate 5. The genus Wecomedon is considered to be synonymous with Psammonyx on the basis of analysis of characters of both genera. Report Sakhalin Kyoto University Research Information Repository (KURENAI) Seta ENVELOPE(9.895,9.895,63.645,63.645) |
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Kyoto University Research Information Repository (KURENAI) |
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English |
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468.8 |
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468.8 Budnikova, L. L. Two New Species of Psammonyx and the Identity of the Genus Wecomedon (Amphipoda, Gammaridea) |
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468.8 |
description |
Two new species of the genus Psammonyx Bousfield, 1973: P. tzvetkovae sp. nov., and P. kudrjaschovi sp. nov. - are described based on the materials collected from the Sakhalin shelf. Psammonyx tzvetkovae is similar to both Wecomedon similis Jarret and Bousfield, 1982 and P. kurilicus (Gurjanova, 1962). However, it differs from W. similis in having shorter interantennal lobe, more oblique palm of gnathopod 1 and different length of articles 5 and 6 of gnathopod 2. Psammonyx tzvetkovae is distinguished from P. kurilicus in having eyes, the absence of a saddlelike depression on urosomit 1, the shape and armament of article 6 of gnathopods 1 and 2, the absence of a "pineapple pad" on article 5 of gnathopod 2 and other characters. Psammonyx kudrjaschovi is closely related to Hippomedon denticulatus (Bate, 1857) and P. longimerus Jarret and Bousfield, 1982 in having epimeron 3 with a slender, tapering posterodistal tooth, dorsal margin with a distinct notch bearing 1 short seta. But it differs from the former species primarily in a short flagellar article l of antenna l, and is separated from the latter in the presence of "ineapple pad" on article 5 of gnathopod 2, the diagonal keel on epimeron 2, and the wider coxal plate 5. The genus Wecomedon is considered to be synonymous with Psammonyx on the basis of analysis of characters of both genera. |
format |
Report |
author |
Budnikova, L. L. |
author_facet |
Budnikova, L. L. |
author_sort |
Budnikova, L. L. |
title |
Two New Species of Psammonyx and the Identity of the Genus Wecomedon (Amphipoda, Gammaridea) |
title_short |
Two New Species of Psammonyx and the Identity of the Genus Wecomedon (Amphipoda, Gammaridea) |
title_full |
Two New Species of Psammonyx and the Identity of the Genus Wecomedon (Amphipoda, Gammaridea) |
title_fullStr |
Two New Species of Psammonyx and the Identity of the Genus Wecomedon (Amphipoda, Gammaridea) |
title_full_unstemmed |
Two New Species of Psammonyx and the Identity of the Genus Wecomedon (Amphipoda, Gammaridea) |
title_sort |
two new species of psammonyx and the identity of the genus wecomedon (amphipoda, gammaridea) |
publisher |
Seto Marine Biological Laboratory, Field Science Education and Research Center, Kyoto University |
publishDate |
2005 |
url |
http://hdl.handle.net/2433/176321 |
long_lat |
ENVELOPE(9.895,9.895,63.645,63.645) |
geographic |
Seta |
geographic_facet |
Seta |
genre |
Sakhalin |
genre_facet |
Sakhalin |
op_relation |
10.5134/176321 0037-2870 http://hdl.handle.net/2433/176321 AA00713575 PUBLICATIONS OF THE SETO MARINE BIOLOGICAL LABORATORY 40 3-4 179 197 2189-2695 |
_version_ |
1766181663914590208 |