Dipturus canutus

LAST, 2008


Grey skate
Classification: Elasmobranchii Rajiformes Rajidae

Reference of the original description
LAST, P.R. (2008)
New short-snout members of the skate genus Dipturus (Rajoidei: Rajidae) from Australian seas. CSIRO Marine and Atmospheric Research Paper, 21: 53–98

Image of the original description

Dipturus canutus sp. nov., adult male holotype (CSIRO H 153–01, 775 mm TL, preserved): A, dorsal surface; B, ventral surface. In: LAST, P.R. 2008 New short-snout members of the skate genus Dipturus (Rajoidei: Rajidae) from Australian seas. CSIRO Marine and Atmospheric Research Paper, 21: 53-98



Description :


Citation: Dipturus canutus LAST, 2008: In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 11/2018

Please send your images of "Dipturus canutus" to info@shark-references.com

Dorsal surface of Dipturus canutus sp. nov. female paratype (CSIRO H 978–01, 904 mm TL, fresh); In: LAST, P.R. 2008 New short-snout members of the skate genus Dipturus (Rajoidei: Rajidae) from Australian seas. CSIRO Marine and Atmospheric Research Paper, 21: 53-98
Common names
eng Grey skate

Short Description
Original diagnosis of LAST, 2008 [3310]: A medium-sized species of Dipturus (to 90 cm TL) with the following combination of characters: disc narrow with rounded apices, width 67–75% TL, 1.2– 1.3 times its length; snout angle 82–96°; tail short, length 0.8–0.9 in distance from snout tip to rear of cloaca; tail not broad, width 1.6–2.0 times height at its midlength, 1.3– 1.9 times at first dorsal-fin origin; pre-upper jaw length 16–19% TL, 1.7–2.0 times internasal width; ventral head length 30–33% TL; snout length 3.1–3.8 times interorbital width; orbit diameter 63–94% interorbital width; first dorsal-fin height 1.2–1.6 in its base length; distance from first dorsal-fin origin to tail tip 2.7–3.9 times first dorsal-fin base length, 3.0–3.7 times caudalfin length; pelvic fins of medium size, length of posterior lobe of adult males 17–19% TL, length of anterior lobe 67–86% of posterior lobe; adult clasper relatively short, 22–25% TL, connected to pelvic-fin inner margin at about 43–45% of its length from cloaca; anterior margins of both surfaces of disc naked; 1–5 nuchal thorns; malar thorns patch well developed; tail with 3 thorn rows in males, additional pair of well-developed lateral rows in females; total pectoral radials 81–88; trunk centra 27– 30; predorsal centra 75–82; total centra about 130–139; tooth rows in upper jaw 33–41; mainly uniform greyish or greyish brown dorsally; ventral surface with strong grey and white pattern, dark markings on snout, over abdomen, around cloaca, and along outer margins of pelvic fins; ventral sensory pores usually indistinct, not surrounded by greyish blotches.

Distribution
Indo-west Pacific: Australia. Source: www.gbif.org

Size / Weight / Age
79.5 cm TL (male/unsexed; [3310]); 90.4 cm TL (female)

Habitat
benthopelagic; marine; depth range 330 - 730 m [3310], usually 400 - 600 m [3310]