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 08/2022

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]

Remarks
shark-references Species-ID=6722;

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