New Cambeva

For the discussion of catfish systematics. Post here to draw our attention to new publications or to discuss existing works.
Post Reply
User avatar
Posts: 12395
Joined: 31 Dec 2002, 11:35
I've donated: $12.00!
My articles: 55
My images: 885
My catfish: 1
My cats species list: 90 (i:0, k:0)
Spotted: 420
Location 1: Singapore
Location 2: Moderator Emeritus

New Cambeva

Post by Silurus »

Costa, WJEM, CRM Feltrin, JLO Mattos & AM Katz, 2024. Monophyly or homoplasy? The relationships of a rare new species of Cambeva (Siluriformes: Trichomycteridae) from the Brazilian Atlantic Forest with a bicolored caudal pattern. Taxonomy 4: 341-353.


The Brazilian Atlantic Forest, one the five main biodiversity hotspots in the world, still houses many organisms that are rare and unknown to science, mostly concentrated in mountain ranges. Herein, we describe a rare new species of Cambeva from the Rio Tietê drainage at the Serra da Mantiqueira, exhibiting a caudal fin color pattern comprising a light-yellowish–white bar posteriorly edged by a black pigmented area. A similar color pattern was described for C. castroi, C. diabola, and C. melanoptera, also endemic to the Rio Paraná basin, and considered evidence of close relationships among these three species. However, other morphological characteristics highly suggest that the new species is not closely related to C. castroi, C. diabola, and C. melanoptera). Herein, we perform a molecular phylogenetic analysis using two mitochondrial genes and one nuclear gene, including all species with that bicolored caudal pattern. The analysis strongly supports the new species as a member of the alpha-clade, and therefore as distantly related to those three species belonging to the beta-clade, indicating that this color pattern has homoplastically arisen in Cambeva. The data reported here reinforce the urgent need for field studies to better understand the different evolutionary patterns found in the genus, since an intense process of environmental degradation is in course.
Post Reply

Return to “Taxonomy & Science News”