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-   -   Pseudacanthicus major: description of one of the largest known Loricariidae (Hypostominae: Ancistrini), a species from rio Tocantins basin, Brazil (https://www.l-welse.com/forum/showthread.php?t=36374)

Karsten S. 28.02.2018 20:49

Pseudacanthicus major: description of one of the largest known Loricariidae (Hypostominae: Ancistrini), a species from rio Tocantins basin, Brazil
 
Pseudacanthicus major: description of one of the largest known Loricariidae (Hypostominae: Ancistrini), a species from rio Tocantins basin, Brazil
Carine C. Chamon, Thiago Costa e Silva

Abstract
The genus Pseudacanthicus currently comprises the following six species distributed in the Amazon and Tocantins basins, and coastal drainages from Guyana to French Guyana: P. serratus, P. fordii, P. histrix, P. spinosus, P. leopardus, P. pitanga, and P. pirarara. Herein we describe P. major, from rio Tocantins basin, one of the largest loricariid species known. The new species is distinguished from its congeners by the following combination of characters: having body color pattern with dark brown background without spots or blotches and dorsal and caudal fins with transversal white bands; anterior process of compound pterotic with no contacting with the posterior margin of the orbit and by the absence of a conspicuous crest on the posterior edge of parieto-supraocciptal. Other osteological characteristicsare further used to diagnose P. major from others congeners. A discussion on gigantism and miniaturization in freshwater fish, ornamental fisheries activities, threats and conservation of the new species are also provided.

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Die neue Art ist identisch zu L 186 und eventuell auch L 64 ?!
Link zum (zugangsbeschränkten) Paper.

Gruß,
Karsten

Acanthicus 05.03.2018 13:10

Moin zusammen,

Karsten hat unsere Datenbank hinsichtlich der neuen Beschreibung bereits angepasst: https://www.l-welse.com/reviewpost/s...uct/200/cat/41

Die Art lässt sich daran von P. histrix unterscheiden, dass Caudale und Dorsale weiße Linien aufweisen und der Körper nicht mit (dunklen) Flecken versehen ist. Die Grundfarbe ist ein dunkles Braun, während P. histrix laut paper grau gefärbt und (dunkel) gefleckt ist.

L 64 und L 186 sind meiner Meinung nach beide P. major zuzurechnen.

edit: Für mich ist P. major ein Synonym zu P. histrix.

lg Daniel


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