Cetopsis varii sp. nov. Cetopsidae
Posted: 04 Jun 2018, 09:46
Abrahao, V.P. & de Pinna, M.C.C. 2018. Cetopsis varii, a new species of whale catfish (Siluriformes: Cetopsidae) from the Meta Basin, Colombia. Journal of Fish Biology. First published: June 1, 2018. https://doi.org/10.1111/jfb.13643 .
Abstract:
Cetopsis varii sp. nov. Cetopsidae (Cetopsinae) is described from the Río Meta basin in eastern Colombia, at middle portions of the Río Orinoco basin. The new species differs from some congeners by a combination of some features: the absence of a humeral spot, presence of eye, conical teeth on vomer and dentary and rounded posterior nares. Various details of body, dorsal and caudal‐fin pigmentation along with morphological features distinguish the new species from remaining congeners. The osteology of the new species is investigated through high‐resolution X‐ray computed tomography. Data thus obtained are used to code the new species for character states utilized in a previous phylogenetic analysis of Cetopsidae. Analysis of the expanded matrix shows that C. varii is the sister group to C. orinoco.
https://onlinelibrary.wiley.com/doi/abs ... /jfb.13643
Abstract:
Cetopsis varii sp. nov. Cetopsidae (Cetopsinae) is described from the Río Meta basin in eastern Colombia, at middle portions of the Río Orinoco basin. The new species differs from some congeners by a combination of some features: the absence of a humeral spot, presence of eye, conical teeth on vomer and dentary and rounded posterior nares. Various details of body, dorsal and caudal‐fin pigmentation along with morphological features distinguish the new species from remaining congeners. The osteology of the new species is investigated through high‐resolution X‐ray computed tomography. Data thus obtained are used to code the new species for character states utilized in a previous phylogenetic analysis of Cetopsidae. Analysis of the expanded matrix shows that C. varii is the sister group to C. orinoco.
https://onlinelibrary.wiley.com/doi/abs ... /jfb.13643