Alvinocaris niwa

Martin, Joel W. & Haney, Todd A., 2005, Decapod crustaceans from hydrothermal vents and cold seeps: a review through 2005, Zoological Journal of the Linnean Society 145 (4), pp. 445-522 : 462-463

ALVINOCARIS NIWA WEBBER, 2004

Type locality: South Pacific Ocean, off New Zealand, southern Kermadec Ridge (midway between the Kermadec Islands and Bay of Plenty, New Zealand), Brothers Caldera , 34°52.89′−52.87′S, 179°3.76′− 3.21′E, R / V Tangaroa sta. TAN0107/135, 1346– 1196 m, benthic sled ( Webber, 2004) .

Known range: Known only from the Brothers Caldera and Rumble V Seamount , southern Kermadec Ridge (midway between the Kermadec Islands and Bay of Plenty, New Zealand) ( Webber, 2004) .

Material: type locality, Brothers Caldera, sta. TAN0107/135; 34°52.89–52.87′S, 179°3.76–3.21′E; R / V Tangaroa ; 1346– 1196 m; benthic sled; 1 female (specimen C), NIWA P1388 ; 3 females (specimens A, D, E), NIWA 3255 ; 1 female (specimen B), MNZ CR. 9977. –Brothers Caldera, sta. TAN0107/141; 34°52.96–52.69′S, 179°4.02–4.93′E; 1538– 1197 m; benthic sled; 3 specimens (141, 141A, 141C), NIWA 3256 ; 1 specimen (C), MNZ CR. 9967. Kermadec Ridge, Rumble V , sta. TAN0107/228; 36°8.63–8.57′S, 178°11.77–11.50′E; R / V Tangaroa ; 877– 655 m; benthic sled; holotype, female, NIWA H837 ; 18 specimens (A–D, F–Q, S– T), NIWA 3257 ; 1 specimen (E), MNZ CR. 9969; 1 specimen ( R), MNZ CR. 9970. –Rumble V , sta. TAN0107/230; 36°8.48′−8.79′S, 178°11.70′− 11.53′E; 755– 360 m; benthic sled; 4 specimens (A, B, D, E), NIWA 3258 ; 1 specimen (C), MNZ CR. 9971. –Rumble V , sta. TAN0107/233; 36°8.35′−8.70′S, 178°11.74–11.58′E; 520– 367 m; benthic sled; 3 specimens (A–C), NIWA 3259 . –Rumble V, sta. TAN0107/ 235; 36°8.36′−8.08′S, 178°11.76′−11.96′E; benthic sled; 4 specimens (B–E), NIWA 3260 ; 1 specimen (A), MNZ CR. 9972. –Rumble V , sta. TAN0107/325; 36°8.27– 7.96′S, 178°11.74–11.70′E; benthic sled; 42 specimens (A, C, E-AC, AE-AS), NIWA 3261 ; 1 specimen (D), MNZ CR. 9973; 1 specimen (B), MNZ CR. 9974; 1 specimen (AD), MNZ CR. 9975; 1 specimen ( AT), MNZ CR. 9976 ( Webber, 2004) .

In addition to the ovigerous female holotype (H-837, NIWA 3253 ), Webber (2004) listed 87 specimens collected on voyage TAN0107 by the R / V Tangaroa , all from hydrothermal vents at the Brothers Caldera and Rumble V Seamount on the southern Kermadec Ridge. All specimens are deposited at the National Institute of Water and Atmospheric Research ( NIWA), Wellington , New Zealand, with the exception of some paratypes deposited at the Museum of New Zealand Te Papa Tongarewa, Wellington .

Remarks: Alvinocaris niwa is the species mentioned earlier (as Alvinocaris sp. A ) by Webber & Bruce (2002: 6). Webber (2004) described additional specimens of Alvinocaris longirostris found on the same voyage to the Kermadec Ridge, extending the known range of that species. Clark & O’Shea (2001) listed other species collected during this voyage. See Webber (2004) for thorough coverage of morphological variability in both species. Webber (2004) also noted that ‘four small specimens’ from this same expedition represent ‘a further one or two species.’