Squalus bucephalus

LAST, SÉRET & POGONOSKI, 2007


Bighead spurdog
Classification: Elasmobranchii Squaliformes Squalidae

Reference of the original description
LAST, P.R. & SÉRET, B. & POGONOSKI, J.J. (2007)
Part 3 - Squalus bucephalus sp nov., a new short-snout spurdog from New Caledonia. CSIRO Marine and Atmospheric Research Paper, 14: 23–29.

Image of the original description

Lateral view of Squalus bucephalus sp. nov. holotype (MNHN 2006–1754, immature male 556 mm TL). In: LAST, P.R. & SÉRET, B. & POGONOSKI, J.J. 2007 Part 3 - Squalus bucephalus sp nov., a new short-snout spurdog from New Caledonia. CSIRO Marine and Atmospheric Research Paper, 14: 23-29

Types
Squalus bucephalus
Holotype: MNHN: 2006-1754; Paratype: MNHN: 1997-3641; NMNZ: P34030;


Description :


Citation: Squalus bucephalus LAST, SÉRET & POGONOSKI, 2007: In: Database of modern sharks, rays and chimaeras, www.shark-references.com, World Wide Web electronic publication, Version 02/2018

Please send your images of "Squalus bucephalus" to info@shark-references.com

Ventral view of the head of Squalus bucephalus sp. nov. holotype (MNHN 2006–1754, immature male 556 mm TL).In: LAST, P.R. & SÉRET, B. & POGONOSKI, J.J. 2007 Part 3 - Squalus bucephalus sp nov., a new short-snout spurdog from New Caledonia. CSIRO Marine and Atmospheric Research Paper, 14: 23-29
Common names
fra \(T\) Aiguillat à grosse tête, eng Bighead spurdog

Short Description
This large, broad-headed species of the "quot;megalops-cubensis group"quot; is distinguished by the following set of characters: head width at mouth 12.1-13.5% TL; mouth width 2.2-2.7 times its horizontal prenarial length; direct pre-second dorsal length 3.9-4.0 times the pectoral-fin anterior margin, 2.7 times dorsal caudal margin; preoral length 2.7-3.1 times the horizontal prenarial length, 9.2-10.5% TL; strongly bifurcated anterior nasal flap; low and raked first dorsal fin; exposed bases of dorsal-fin spines are broad, 0.7-0.8% TL; both dorsal fins with short inner margins, first dorsal-fin height 1.4-1.5 times its inner margin length, second dorsal-fin height 0.8-1.0 times its inner margin length; pectoral-fin anterior margin 1.8-2.0 times its inner margin length; preventral caudal margin 1.8-2.2 times the inner margin of pelvic fin; dorsal fins with dark distal portion, posterior margin of free rear tip pale; caudal fin upper posterior margin broadly white, lower lobe with dark base and pale outer half, no caudal bar; flank denticles unicuspid or weakly tricuspid; monospondylous centra 45, precaudal centra 86-89, total centra 113-118 [3329].

Distribution
Western Pacific: northern Tasman Sea on Norfolk Ridge (Stylaster Seamount), and off New Caledonia.

Size / Weight / Age
90.0 cm TL (male/unsexed; [3329])

Habitat
pelagic-oceanic; marine; depth range 448 - 880 m [3329]

Parasites (arranged by Jürgen Pollerspöck)
Copepoda
  • Pseudopandarus cairae BERNOT & BOXSHALL, 2017 [25052]