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DOI: http://dx.doi.org/10.11646/zootaxa.4320.1.2

Description of a new species of deepwater catshark Apristurus yangi n.sp (Carcharhiniformes: Pentanchidae) from Papua New Guinea

WILLIAM T. WHITE, RALPH R. MANA, GAVIN J.P. NAYLOR

Abstract


Apristurus yangi, a new species of deepwater catshark, is described from Papua New Guinea based on two specimens collected during recent deepwater surveys. The new species belongs to the longicephalus-group which is characterised by its very long snout compared to members of the brunneus-group and spongiceps-groups. Apristurus yangi differs from its closest congeners in a combination of the following characters: 8 intestinal spiral valves; mouth width 7.9–8.6% TL; 32–33 monospondylous centra; 38 precaudal-diplospondylous vertebrae; small in size (female holotype mature at 437 mm TL); egg case small (~5.9 cm long) and with faint longitudinal striations.

 


Keywords


Pisces, Chondrichthyes, taxonomy, western South Pacific, Apristurus longicephalus group, molecular analysis

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ISSN 1175-5326 (Print Edition) & ISSN 1175-5334 (Online Edition)
Published by Magnolia Press, Auckland, New Zealand
A founding journal of Biotaxa