Editorial Type:
Article Category: Research Article
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Online Publication Date: 01 Sept 2010

A New Legskate (Rajoidei: Genus Cruriraja) from Southern Africa

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Page Range: 364 – 372
DOI: 10.1643/CI-09-215
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Abstract

A common legskate from southern Africa, misidentified for the last half century as Cruriraja parcomaculata, is redescribed as C. hulleyi. A number of morphometric and meristic characters are identified that distinguish C. hulleyi from C. parcomaculata ( = triangularis). Cruriraja hulleyi exhibits midback thorns in a continuous row above the anterior half of the abdominal region, the interdorsal space is usually greater than half the dorsal-fin base length, the clasper eperon is not bifurcate, and the clasper ventral surface lacks dermal denticles. Relative to C. parcomaculata, C. hulleyi is larger, has a shorter snout, smaller eyes, a more obtuse snout angle, fewer lower jaw tooth rows, more turns in the spiral valve, more nuchal thorns, exhibits scapular thorn patches and more predorsal midline thorns, and has a spatulate rather than pointed distal tip of the anterior lobe of the pelvic fin. The two species occur in allopatry, with C. hulleyi ranging from Namibia to the Eastern Cape Coast of South Africa and C. parcomaculata distributed from kwaZulu-Natal, South Africa to Mozambique.

Copyright: 2010 by the American Society of Ichthyologists and Herpetologists
Figure 1
Figure 1

Cruriraja hulleyi, new species, adult male holotype (SAM 37618, 514 mm TL): dorsal surface.


Figure 2
Figure 2

Cruriraja hulleyi, new species, adult male holotype (SAM 37618, 514 mm TL): (A) dorsal head showing snout, orbito-spiracular, nuchal, and scapular regions; (B) ventral head showing oronasal region and tooth band.


Figure 3
Figure 3

Cruriraja hulleyi, new species, adult female paratype (SAM 37619, 535 mm TL): (A) dorsal surface; (B) ventral surface.


Figure 4
Figure 4

Egg cases. (A) Cruriraja hulleyi SAM uncat.; (B) Cruriraja parcomaculata SAM 33634. Scale  =  10 mm.


Contributor Notes

Department of Biological Science, Florida State University, Tallahassee, Florida 32306, e-mail: naschliman@bio.fsu.edu. Send reprint requests to this address.
Pacific Shark Research Center, Moss Landing Marine Laboratories, Moss Landing, California 95039; and Research Associate, South African Institute for Aquatic Biodiversity, Private Bag 1015, Grahamstown, 6140, South Africa, e-mail: debert@mlml.calstate.edu
Iziko–South African Museum, Shark Research Centre, P.O. Box 61, Cape Town 8000, South Africa, e-mail: leonard@saveourseas.com

Associate Editor: D. Buth.

Received: 23 Nov 2009
Accepted: 09 Mar 2010
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