Australian Museum Journal Rhinobatos sainsburyi n.sp. and Aptychotrema timorensis n.sp.—two new shovelnose rays (Batoidea: Rhinobatidae) from the eastern Indian Ocean

Shortform:
Last, 2004, Rec. Aust. Mus. 56(2): 201–208
Author(s):
Last, Peter R.
Year published:
2004
Title:
Rhinobatos sainsburyi n.sp. and Aptychotrema timorensis n.sp.—two new shovelnose rays (Batoidea: Rhinobatidae) from the eastern Indian Ocean
Serial title:
Records of the Australian Museum
Volume:
56
Issue:
2
Start page:
201
End page:
208
DOI:
10.3853/j.0067-1975.56.2004.1415
Language:
English
Date published:
07 July 2004
Cover date:
07 July 2004
ISSN:
0067-1975
CODEN:
RAUMAJ
Publisher:
The Australian Museum
Place published:
Sydney, Australia
Digitized:
07 July 2004
Available online:
07 July 2004
Reference number:
1415
EndNote package:
EndNote file
Title page:
Title page (11kb PDF)
Complete work:
Complete work (144kb PDF)

Abstract

Two new shovelnose rays, Rhinobatos sainsburyi n.sp. and Aptychotrema timorensis n.sp., are described from the continental shelf off northwestern Australia. Rhinobatos sainsburyi belongs to an unresolved supraspecific complex that includes the type of the genus, R. rhinobatos (Linnaeus), and at least 9 other species that occur in the Indo-Pacific. Rhinobatos sainsburyi differs from these species by a combination of morphometry, squamation and colour. Aptychotrema timorensis, a third valid member of an endemic Australian genus, differs from its congeners in morphometry, and in having a narrower snout apex, fewer caudal vertebrae, and white spots on its dorsal surface.

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