L-Welse.com Forum - Aspidoras psammatides

Hallo zusammen,
es sind zwei neue Panzerwelse beschrieben wurden!
Ich setze erst einmal nur den Abstract hier rein:

Aspidoras psammatides Britto, Lima & Santos, 2005
During a recent ichthyological survey in Chapada Diamantina, Estado da Bahia, Brazil, a new, very distinctive Aspidoras was
discovered in tributaries of the upper rio Paraguaçu. The new taxon differs from its congeners mainly in having: a poorlydeveloped
pigmentation pattern, restricted to minute scattered blotches on dorsal region of head and body, but grouped in
small, irregular blotches along the lateral body plate junction; four or five caudal vertebra, anterior to compound caudal
centrum, with neural and haemal spines placed posteriorly, close to post-zygapophyses; and post-zygapophyses of the
precaudal vertebrae without dorsal expansions connected with their respective neural spines. The new species shares with
Aspidoras velites dorsolateral body plates not touching their counterparts dorsally, and infraorbital bones with reduced
flanges that are restricted to the latero-sensory canal. Both of these are considered reductive character states, probably
indicating a paedomorphic condition to both species. The new species is also compared to Aspidoras maculosus, a congener
which bears the most similar color pattern and is geographically closest to the new species.

Scleromystax salmacis Britto & Reis, 2005
The recently resurrected callichthyid catfish genus Scleromystax includes species occurring in several Brazilian coastal river
basins from southern Bahia to southern Santa Catarina. Several character states, especially those related to sexual dimorphism,
demonstrate the monophyly of Scleromystax. Examination of Scleromystax specimens sampled from streams in the Ilha de
Santa Catarina and Nova Veneza, and the rio Mampituba basin, Santa Catarina and Rio Grande do Sul States, revealed that they
constitute a new taxon, and thus the southernmost record for the genus. Scleromystax salmacis, new species, has coloration
similar to that of S. macropterus, differing from that species mainly by the absence of a black spot on the base of the median
caudal-fin rays, and transverse blotches along the body more irregular than those in S. macropterus. In addition to differences
in coloration and external and osteological characters, the new species differs from S. barbatus and S. prionotos by its more
rounded snout. The new taxon is also distinguished from its congeners by the presence of a single perforated dorsolateral
body plate, similar to the condition found in some Aspidoras species, orientation of the ventral keel of the scapulocoracoid,
and by the absence of sexually dimorphic features.

Viele Grüße
Erik