Acroteriobatus stehmanni
Weigmann, Ebert & Séret, 2021
Classification: Elasmobranchii Rhinopristiformes Rhinobatidae
Reference of the original description
Resolution of the Acroteriobatus leucospilus species complex, with a redescription of A. leucospilus (Norman, 1926) and descriptions of two new western Indian Ocean species of Acroteriobatus (Rhinopristiformes, Rhinobatidae). Marine Biodiversity, 51(4), Article 58
Resolution of the Acroteriobatus leucospilus species complex, with a redescription of A. leucospilus (Norman, 1926) and descriptions of two new western Indian Ocean species of Acroteriobatus (Rhinopristiformes, Rhinobatidae). Marine Biodiversity, 51(4), Article 58
Types
Acroteriobatus stehmanni
Holotype: ZMH: 25553; Paratype: HMNH NASU: 103836; HMNH NASU: 103838; ZMH: 25554; ZMH: 25555; ZMH: 25556; ZMH: 25557; ZMH: 25558; ZMH: 25559; ZMH: 25560;
Acroteriobatus stehmanni
Holotype: ZMH: 25553; Paratype: HMNH NASU: 103836; HMNH NASU: 103838; ZMH: 25554; ZMH: 25555; ZMH: 25556; ZMH: 25557; ZMH: 25558; ZMH: 25559; ZMH: 25560;
Description :
Citation: Acroteriobatus stehmanni Weigmann, Ebert & Séret, 2021: In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 11/2024
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Acroteriobatus stehmanni Weigmann, Ebert & Séret, 2021 ZMH 25553, adult male holotype, 597 mm TL, in total dorsal view. Scale bar: 5 cm © Weigmann, Ebert & Séret
Acroteriobatus stehmanni Weigmann, Ebert & Séret, 2021 ZMH 25553, adult male holotype, 597 mm TL, in total dorsal view. Scale bar: 5 cm © Weigmann, Ebert & Séret
Common names
Stehmanns' guitarfish
Stehmanns' guitarfish
Short Description
Original diagnosis of WEIGMANN, EBERT & SÉRET, 2021 [29760]: A small Acroteriobatus species distinguished by the following combination of characters: dorsal surface smooth, without prominent thorns or tubercles, except for slightly enlarged granular denticles partially around orbital rims and rather regularly distributed along midline from nape to or to somewhat anterior to first dorsal-fin origin; absent between dorsal fins and upper caudal fin. Snout semi-translucent with a few, somewhat elongated bluish-gray spots only giving it a very reduced stripe-nosed appearance, patterning with small bluish-gray circular spots generally sparse and confined to symmetrical patterns on snout tip, posterior pectoral-fin margins, a pair of tiny spots on midbody behind occipital joint, and few spots on posterior pelvic-fin margins; indistinct brown spots on the body and dorsal and caudal fins; ventral surface white except for a blackish blotch and two tiny black spots on ventral snout tip in smallest juvenile paratype. Nasal lamellae 43–48; upper jaw tooth row count ~64–78; 181–186 post-synarcual centra; 194–200 total vertebral segments; 63– 67 total pectoral skeleton radials.
Original diagnosis of WEIGMANN, EBERT & SÉRET, 2021 [29760]: A small Acroteriobatus species distinguished by the following combination of characters: dorsal surface smooth, without prominent thorns or tubercles, except for slightly enlarged granular denticles partially around orbital rims and rather regularly distributed along midline from nape to or to somewhat anterior to first dorsal-fin origin; absent between dorsal fins and upper caudal fin. Snout semi-translucent with a few, somewhat elongated bluish-gray spots only giving it a very reduced stripe-nosed appearance, patterning with small bluish-gray circular spots generally sparse and confined to symmetrical patterns on snout tip, posterior pectoral-fin margins, a pair of tiny spots on midbody behind occipital joint, and few spots on posterior pelvic-fin margins; indistinct brown spots on the body and dorsal and caudal fins; ventral surface white except for a blackish blotch and two tiny black spots on ventral snout tip in smallest juvenile paratype. Nasal lamellae 43–48; upper jaw tooth row count ~64–78; 181–186 post-synarcual centra; 194–200 total vertebral segments; 63– 67 total pectoral skeleton radials.
Dentition
Teeth arranged in quincunx, small, close-set, rhombic, broad-based with short, bluntly rounded cusp; upper and lower teeth similar in shape and size; ~72 (~64–78) tooth rows in upper and ~70 (~64–76) in lower jaws. [29760]
Teeth arranged in quincunx, small, close-set, rhombic, broad-based with short, bluntly rounded cusp; upper and lower teeth similar in shape and size; ~72 (~64–78) tooth rows in upper and ~70 (~64–76) in lower jaws. [29760]
Remarks
shark-references Species-ID=16140;
shark-references Species-ID=16140;