Acroteriobatus stehmanni

Weigmann, Ebert & Séret, 2021



Classification: Elasmobranchii Rhinopristiformes Rhinobatidae

Reference of the original description
Weigmann, S. & Ebert, D.A. & Séret, B. (2021)
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;

Images of types

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 10/2021

Please send your images of "Acroteriobatus stehmanni" to info@shark-references.com

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
eng 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.

Distribution
coastal waters surrounding the Socotra Islands [29760]

Size / Weight / Age
TL (max): 613 mm [29760]

Habitat
marine; shallow coastal waters [29760]

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]

Remarks
shark-references Species-ID=16140;