Data/hora: 13/06/2024 03:32:58

Provedor de dados: | 83
País: | Brazil
Título: | A new species of Hoplomyzon (Siluriformes: Aspredinidae) from Maracaibo Basin, Venezuela: osteological description using high-resolution computed microtomography of a miniature species
Autores: | Carvalho,Tiago P.; Reis,Roberto E.; Friel,John P.
Data: | 2017-01-01
Ano: | 2017
Palavras-chave: | Endemism; Ernstichthys intonsus; Miniaturization; Synapomorphy; Taxonomy.
Resumo: | ABSTRACT A new miniature species of banjo catfish of the genus Hoplomyzon is described from the Lake Maracaibo Basin in Venezuela. The new species is distinguished from all its congeners by the straight anterior margin of the mesethmoid (vs. a medial notch); a smooth and straight ventral surface of the premaxilla (vs. presence of bony knobs on the ventral surface of premaxilla); absence of teeth on dentary (vs. teeth present on dentary); configuration of ventral vertebral processes anterior to anal fin, which are composed of single processes anterior to anal-fin pterygiophore (vs. paired process); presence of several filamentous barbel-like structures on the ventral surface of head of adults (vs. small papillous structures in the ventral surface of head of adults); and 8 anal-fin rays (vs. 6 or 7). An extensive osteological description is made of the holotype using high-resolution x-ray computed microtomography (HRXCT).
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000100216
Editor: | Sociedade Brasileira de Ictiologia
Relação: | 10.1590/1982-0224-20160143
Formato: | text/html
Fonte: | Neotropical Ichthyology  v.15 n.1 2017
Fonte: | info:eu-repo/semantics/openAccess