Rhinobatos austini Ebert & Gon, 2017,

Ebert, David A., Wintner, Sabine P. & Kyne, Peter M., 2021, An annotated checklist of the chondrichthyans of South Africa, Zootaxa 4947 (1), pp. 1-127: 76

publication ID

https://doi.org/10.11646/zootaxa.4947.1.1

publication LSID

lsid:zoobank.org:pub:7F3B4794-65CF-4691-A330-78A423F2606F

DOI

http://doi.org/10.5281/zenodo.4614907

persistent identifier

http://treatment.plazi.org/id/039287A1-9522-FFC5-CFF7-5F06FDEC2799

treatment provided by

Plazi

scientific name

Rhinobatos austini Ebert & Gon, 2017
status

 

Rhinobatos austini Ebert & Gon, 2017 

Austin’s Guitarfish

Rhinobatos austini Ebert & Gon, 2017: 205  , figs. 1–6. Holotype: SAIAB 75223View Materials. Type locality: Near Port Shepstone   GoogleMaps, KwaZulu-Natal, South Africa, 30°50'S, 30°29'E.

Local synonymy: Rhinobatus annulatus  (Natal form): Wallace, 1967b: 27, fig. 15 (in part); Compagno et al., 1989: 78, pl. (in part); Heemstra & Heemstra, 2004: 78. Rhinobatos holcorhynchus: Séret et al., 2016a: 98  , fig. 10.20 (in part, illustration is of R. austini  ). Rhinobatos austini: Ebert & Gon, 2017: 205  , Figs. 1View FIGURE 1 –6.

South Africa voucher material: Holotype: SAIAB 75223View Materials; paratypes: SAIAB 186420View Materials, SAIAB 193574View Materials. Non-type: SAIAB 11125View Materials. 

South African distribution: Port Shepstone north to KZN border with Mozambique.

Remarks: Accounts by Wallace (1967b, see fig. 15) and Compagno et al. (1989, see illustration on p. 79) described a Rhinobatos annulatus “Natal  ” form that was distinguished by large brown spots from the “Cape” form. However, the “Natal” form is actually Rhinobatos austini  , while the “Cape” form, which is now assigned to the genus Acroteriobatus  , has numerous small eyespots on its dorsal surface. Furthermore, the recently described R. austini  was also misidentified with R. holcorhynchus  due to both species having a black teardrop-shaped blotch on the ventral surface of its snout. Recent re-examination of specimens from Mozambique and Madagascar has expanded the known range of R. austini  . This species appears to inhabit a mostly coastal habitat from inshore to 107 m, but mostly less than 75 m depth, while R. holcorhynchus  appears to occur in deeper water at depths from 75 m to at least 350 m ( Séret et al., 2016a; Ebert & Gon, 2017). The illustration in the species account of R. holcorhynchus  in Séret et al. (2016a, see fig. 10.20) is actually R. austini  .

Conservation status: DD (2019).

Kingdom

Animalia

Phylum

Chordata

Class

Elasmobranchii

Order

Rajiformes

Family

Rhinobatidae

Genus

Rhinobatos

Loc

Rhinobatos austini Ebert & Gon, 2017

Ebert, David A., Wintner, Sabine P. & Kyne, Peter M. 2021
2021
Loc

Rhinobatos austini Ebert & Gon, 2017: 205

Ebert, D. A. & Gon, O. 2017: 205
2017