Scyliorhinus comoroensis

COMPAGNO, 1988


Comoro cat shark
Classification: Elasmobranchii Carcharhiniformes Scyliorhinidae

Reference of the original description
COMPAGNO, L.J.V. (1988)
Scyliorhinus comoroensis sp. n., a new catshark from the Comoro Islands, western Indian Ocean (Carcharhiniformes, Scyliorhinidae). Bulletin du Muséum National d'Histoire Naturelle, (Série 4), Section A: Zoologie Biologie et Ecologie Animales, 10 (3): 603–625

Image of the original description

<i>Scyliorhinus comoroensis</i> COMPAGNO, 1988, MNHN 1984-771, holotype, 465 mm adult male, lateral and ventral

Types
Scyliorhinus comoroensis
Holotype: MNHN: 1984-0701;

Images of types

Description :


Citation: Scyliorhinus comoroensis COMPAGNO, 1988: In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 02/2021

Please send your images of "Scyliorhinus comoroensis" to info@shark-references.com

Scyliorhinus comoroensis COMPAGNO, 1988, MNHN 1984-771, holotype, 465 mm adult male, lateral and ventral © Karla A. Soares, Laboratório de Ictiologia, Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo
Common names
eng Comoro cat shark

Short Description
Diagnosis after Compagno, 1988 [3628]: A species of Scyliorhinus with a bluntly rounded, moderately long snout, preoral length 5.6 % of total length. Head moderately broad, greatest width 0.64 times of head length. Nostrils without nasoral grooves; anterior nasal flaps enlarged, reaching level of mouth but not touching each other at the midline, with a strong medial ridge. Tooth row counts 50/50. First dorsal origin just anterior to pelvic insertions; second dorsal origin over anal midbase; interdorsal space 0.9 times anal base. Denticles fairly large, teardrop-shaped, and barely tricuspidate, skin relatively rough. Inner margins of pelvic fins only partly fused into an apron over claspers, with a deep notch separating them for about half the inner margin length. Claspers long and slender, cylindrical and blunt-tipped, extending behind expanded free rear tips of pelvic fins but falling well anterior to anal origin. Clasper hooks absent, rhipidion welldeveloped, cover rhipidion weak, accessory terminal and ventral terminal 2 cartilages absent, dorsal terminal 2 present, dorsal and ventral terminal cartilages of equal length, end-style elongated and extending between terminal cartilages for about two-thirds of their lengths. Monospondylous precaudal vertebral count 40, total •vertebral count 137. Intestinal valve with 8 turns. Color pattern with bold, discrete dark gray-brown saddles and large blotches on a Iight-gray brown background, with scattered numerous small white spots size of eye pupil or slightly larger; white spots in saddles and spaces between them but not close-set; no small bold dark spots. Size small, male adult at 464 mm TL.

Distribution
Western Indian Ocean: Comoro Islands and northwestern coast of Madagascar (13º45’S, 47º38’E) [27296] Source: www.gbif.org

Biology
Oviparous, paired eggs are laid. Embryos feed solely on yolk [733]. Attains 60 cm. Known only from Ngazidja in 40-400 m.

Habitat
bathydemersal; marine; depth range 400 - 400 m [785]

Dentition
Monognathic heterodonty gradual well developed; anterior teeth abruptly larger than the parasymphysial ones and lateral teeth smaller distally, with smaller and thicker principal cusps. Sexual heterodonty not observed; only the holotype was examined. Tooth counts 25–25/21–22. Upper teeth with slightly higher principal cusps than lower ones, and striae longer and stouter. Parasymphysial and anterior teeth similar in shape and principal cusp straight; principal cusp flanked by one cusplet on each side. Lateral teeth with principal cusp slightly oblique and one cusplet on each side. Commissural teeth not examined. [27296]

Remarks
shark-references Species-ID=6306;