The species of Hemiancistrus (Siluriformes: Loricariidae) from Ecuador
 

The species of Hemiancistrus (Siluriformes: Loricariidae) from Ecuador
Francisco R. Provenzano und Ramiro S. Barriga

Abstract
At the Fish Collection of the Instituto de Ciencias Biológicas, Escuela Politécnica Nacional, Quito, three species traditionally grouped in the genus Hemiancistrus were identified: H. annectens (Regan 1904), H. landoni Eigenmann 1916, and a new specie described here. The new species inhabits exclusively in the Esmeraldas River Basin, Pacific slope, northwestern Ecuador. It is easily recognized by the completely naked abdomen, with rounded, dark spots, and a different color pattern on the dorsal and caudal fins. A comparative analysis of bones related to the opercular mobility, shows important differences between H. annectens, H. landoni, and the new species, suggesting that H. annectens does not belong to the genus Hemiancistrus or the Ancistrini group. According to the characteristics observed in these bones, H. annectens shows greater similarity to those reported in species of the Hypostomini group, supporting its inclusion in this group, but placing it in the genus Hypostomus requires further analysis. On the other hand, the conditions observed on the bones of Hemiancistrus landoni and the new species suggest that both are inside of the Ancistrini group. The new species is placed in the genus Hemiancistrus tentatively, pending future analysis.

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Das Paper sollte zugangsbeschränkt sein (bei mir hat der Download trotzdem funktioniert ?!): Link

Die neue Art heisst Hemiancistrus furtivus.

Gruß,
Karsten

Moin,

das ist eine gute Wochenendlektüre. Hemiancistrus ist ein spannendes Taxon momentan und dann eine westandine, neu beschriebene Art - spannender gehts doch kaum.

viele Grüße
Daniel

Hallo Karsten,

bei mir ist es zugangsbeschränkt ich habe da kein Glück mehr :kef: