A new miniature species of Priocharax (Teleostei: Characiformes: Characidae) from the Rio Madeira drainage, Brazil, with comments on the adipose fin in characiforms

Vertebrate Zoology

article

George Mattox¹  Camila S. Souza²  Mônica Toledo-Piza³  Ralf Britz⁴  Claudio Oliveira² 

[1] Universidade Federal de São Carlos;Departamento de Biologia Estrutural e Funcional, Instituto de Biociências, Universidade Estadual Paulista – campus Botucatu;Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo;Museum of Zoology

关键词: Amazon River basin;    barcoding;    biodiversity;    osteology;    taxonomy;   

DOI  :  10.26049/VZ70-3-2020-11

学科分类：社会科学、人文和艺术（综合）

来源: Pensoft

【 摘 要 】

A new miniature species of the freshwater fish genus Priocharax is described from the Rio Jamari, Rio Madeira drainage, Amazon basin. Priocharax varii sp. n. is the fourth species currently recognized in the genus and shares with the other three the presence of a conspicuous larval pectoral fin in adults, a fully toothed maxilla, a triangular pseudotympanum situated anterior to the fifth vertebra and a tiny size combined with a translucent body. The new species is diagnosed from congeners in having an adipose fin, a unique feature within Priocharax . Molecular identification of the new species and the other valid Priocharax species supports the morphological findings. A brief discussion on the presence/absence of the adipose fin in Characiformes is provided.

【 授权许可】

CC BY