Abstract
This study provides new distributional and morphological information for two recently described species of catsharks (Carcharhiniformes, Scyliorhinidae) from Brazil. Scyliorhinus cabofriensis Soares, Gomes & Carvalho, 2016, originally described from off Cabo Frio, state of Rio de Janeiro (536 m depth) is recorded in deeper waters (647 m) off northern Rio de Janeiro, and Scyliorhinus ugoi Soares, Gadig & Gomes, 2015, previously known from the Caribbean Sea to Rio de Janeiro (depth unknown), is reported off the state of Santa Catarina, southern Brazil, at 825 m. Morphometric data are provided for all the specimens examined.
Highlights
The Scyliorhinidae (Elasmobranchii, Carcharhiniformes), with 17 genera and approximately 160 species, is the most diverse family of sharks (Nelson et al 2016; Soares and Carvalho 2019)
According to Soares et al (2016), S. cabofriensis can be distinguished from all western South Atlantic congeners by its color pattern composed of randomly and asymmetrically distributed black and white spots of varied sizes; saddles not well defined and without sharp median projections; claspers with a well-developed groove on the terminal portion of the ventral terminal cartilage; envelope
Scyliorhinus cabofriensis was previously known from 23 specimens collected off northeastern Rio de Janeiro (Soares et al 2016)
Summary
The Scyliorhinidae (Elasmobranchii, Carcharhiniformes), with 17 genera and approximately 160 species, is the most diverse family of sharks (Nelson et al 2016; Soares and Carvalho 2019). Four valid species of Scyliorhinus have been reported in the western South Atlantic: Scyliorhinus boa (Goode & Bean, 1896), known from the Caribbean Sea to northeastern Brazil (Rio Grande do Norte); Scyliorhinus haeckeli (Miranda Ribeiro, 1907), known from southern Bahia (Brazil) to northern Argentina; Scyliorhinus cabofriensis Soares, Gomes & Carvalho, 2016, from Rio de Janeiro (Brazil); and Scyliorhinus ugoi Soares, Gadig & Gomes, 2015, from the Caribbean Sea (Barbados) to Rio de Janeiro (Brazil) (Lins-Oliveira et al 2015; Soares et al 2015, 2016; Soares and Carvalho 2019). Scyliorhinus besnardi Springer & Sadowsky 1970, traditionally recognized from the western South Atlantic, was recently synonymized with S. haeckeli by Soares et al (2016).
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