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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Bibliographic Data

Short Form
Last, 2004, Rec. Aust. Mus. 56(2): 201–208
Author
Peter R. Last
Year
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
/Uploads/Journals/17996/1415.enw
Title Page
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Complete Work
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