A new species of Pimelodella Eigenmann & Eigenmann, 1888 (Siluriformes: Heptapteridae) from the Orinoco River basin

Autor:	Miguel Ángel Cortés-Hernández, Carlos DoNascimiento, Hernando Ramírez-Gil
Rok vydání:	2020
Předmět:	Tail Barbel geography geography.geographical_feature_category biology Fish fin Anatomy biology.organism_classification Heptapteridae Rivers Fish anatomy Pimelodella Tributary Animals Animal Science and Zoology Taxonomy (biology) Catfishes Ecology Evolution Behavior and Systematics Catfish
Zdroj:	Zootaxa. 4808
ISSN:	1175-5334 1175-5326
Popis:	A new species of Pimelodella is described from western Andean tributaries of the Orinoco River basin. The new species differs from all congeners by a unique set of characters that includes long maxillary barbel, surpassing the dorsal lobe of the caudal fin; relatively short adipose fin (32.8–36.4 of SL); 40–42 total vertebrae; posterior margin of pectoral-fin spine with 12–18 retrorse dentations along basal two thirds; laterosensory canal foramina of dentary and preopercle large and externally conspicuous; a brown faint and narrow midlateral stripe extending from the pseudotympanum, fading posteriorly along the caudal peduncle, and ending as a spot at the caudal-fin base; and dorsal-fin base darkly pigmented, from spinelet to posteriormost interradial membrane. Taxonomic status of P. pallida and presence of P. cruxenti in Colombia are also discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00b196cf52c1827c148c8d39e8a02f1e https://doi.org/10.11646/zootaxa.4808.3.5 Zobrazit plný text záznamu