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#1 |
Cascudo
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2 neue Pseudancistrus
Hallo!
Es gibt zwei neue Pseudancistrus aus Venezuela, made bei Armbruster und Co: Two new species of Pseudancistrus from southern Venezuela (Siluriformes: Loricariidae) Nathan K. Lujan*, Jonathan W. Armbruster* and Mark H. Sabaj** Two new species of Pseudancistrus are described from the upper Río Orinoco and Río Negro in Southern Venezuela. Pseudancistrus pectegenitor was collected in the main channel of the Río Orinoco near the mouth of the Río Ventuari and in the middle reaches of the Río Casiquiare. It differs from congeners by having 10-11 dorsal-fin rays (vs. seven), adpressed cheek odontodes reaching to three or more plates beyond the opercle in adults (vs. maximally to rear edge of the opercle), plates of ventral row of caudal peduncle with dorsal laminae strongly concave, accentuating the medial keel of the ventral plate row (shared with P. sidereus), and large oral papillae internal to the dentary tooth cup (shared with P. coquenani, P. orinoco, and P. yekuana). Pseudancistrus yekuana is known only from the type locality, immediately upstream of Salto Tencua in the upper Río Ventuari. It differs from congeners by having large oral papillae internal to the dentary tooth cup (shared with P. coquenani, P. orinoco, and P. pectegenitor), lower lip reaching to middle of pectoral girdle (vs. to anterior edge of pectoral girdle), pectoral-fin spine maximally reaching posterior base of the pelvic-fin spine when adpressed ventral to the pelvic fin (vs. at least halfway through pelvic-fin insertion) and by several morphometric differences. https://www.pfeil-verlag.de/04biol/d9902d18.php Grüße, Christian |
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#2 | |
Senior-Super-Duper-L-Wels King
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Hallo Christian
Zitat:
lg Udo
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wer Schreipfehler findet, darf sie behalten ![]() Welse.ch , Die Harnischwels Zuchtdatenbank abwesend bis Dienstag |
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#4 |
L-Wels Gott
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#5 |
Welspapa
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Pseudancistrus pectegenitor und P. yekuana
Hi,
in der neuen "Aquarium live" ist, glaube ich ein kleiner Bericht. Gruß Thomas
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https://www.flickr.com/photos/tportugall/ |
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#6 |
L-Wels
Registriert seit: 28.06.2007
Beiträge: 212
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Hallo
Der Wels ( siehe den Link / Pictures of P. pectigenator by Nathan Luhan and Mark Sabaj )sieht aus wie eine " Kampmaschine" echt Klasse ! ![]() gruss Frank |
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#7 |
Welspapa
Registriert seit: 19.01.2007
Beiträge: 162
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#8 |
Welsfan
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Thema | Autor | Forum | Antworten | Letzter Beitrag |
Neue Coryart / Form ? | Joern | Callichthyidae | 10 | 12.02.2007 23:30 |
neue Wurzel | Leon | Loricariidae | 4 | 24.12.2006 21:34 |
Pseudancistrus sidereus | Walter | Erstbeschreibungen und Systematik | 0 | 04.06.2005 00:54 |
Neue Gattung - Scleromystax | Reinwald | Callichthyidae | 7 | 13.02.2004 22:15 |