A new species of Raricirrus (Annelida: Cirratuliformia) from deep-water sunken wood off California

Zootaxa ◽  
2017 ◽  
Vol 4353 (1) ◽  
pp. 51 ◽  
Author(s):  
WAGNER F. MAGALHÃES ◽  
KATRIN LINSE ◽  
HELENA WIKLUND
Keyword(s):  
Mitochondrial Dna ◽  
New Species ◽  
Southern Ocean ◽  
Deep Water ◽  
Deep Sea ◽  
Hydrothermal Vents ◽  
Scotia Ridge ◽  
Coi Sequences ◽  
A New Species

The genus Raricirrus is characterized by the absence of feeding palps, presence of filamentous branchiae, posterior segments shorter and wider than preceding ones, and by having diverse types of chaetae, including serrate capillaries, long natatory capillaries, falcate and finely pectinate, coarsely serrate chaetae and simple curved spines. A new species of Raricirrus is proposed based on morphological and mitochondrial DNA data. The K2P distance comparison of 16S and COI sequences from Raricirrus specimens collected from sunken wood in the deep-sea (3100 m) off Monterey, California, differed in less than 0.02 in both loci from those of another undescribed Raricirrus species collected at deep-sea hydrothermal vents in the East Scotia Ridge, Southern Ocean, and they are considered conspecific. This species is unique among its congeners by the lack of serrate chaetae, presence of acicular spines and neuropodial capillaries. Raricirrus jennae sp. nov. has only long capillaries on anterior notopodia, straight acicular spines with companion capillaries on posterior notopodia (from chaetigers 15–20), and similar acicular spines and companion capillaries throughout neuropodia. Raricirrus jennae sp. nov. appears to be an opportunistic and widely distributed species. The genus Raricirrus is emended to include the presence of acicular spines and keys to all cirratulid and ctenodrilid genera and Raricirrus species are presented. 

A new squat lobster species of the genus Munida Leach, 1820 (Crustacea: Anomura: Galatheoidea: Munididae) from hydrothermal vents on the Eastern Pacific Rise

Zootaxa ◽  
2020 ◽  
Vol 4743 (1) ◽  
pp. 131-136 ◽  
Author(s):  
XINMING LIU ◽  
XINZHENG LI ◽  
RONGCHENG LIN
Keyword(s):  
New Species ◽  
Deep Sea ◽  
Hydrothermal Vent ◽  
Hydrothermal Vents ◽  
Eastern Pacific ◽  
Single Specimen ◽  
Squat Lobster ◽  
The Third ◽  
A New Species

A new species of the genus Munida Leach, 1820, is described and illustrated based on a single specimen from the deep-sea hydrothermal vent on the Eastern Pacific Rise. Munida alba sp. nov. closely resembles M. ampliantennulata Komai, 2011, M. watatsumin Komai, 2014. and M. magniantennulata, but differences in the morphologies of the third maxilliped, pollex of the cheliped and the third segment of the antennal peduncle readily distinguish the new species from the three relatives. The new species is the fourth of the genus occurring at the hydrothermal vent areas. 

scholarly journals A new species and phylogenetic insights in Hesiospina (Annelida, Hesionidae) 

Zootaxa ◽  
2018 ◽  
Vol 4441 (1) ◽  
pp. 59 ◽  
Author(s):  
PAULO BONIFÁCIO ◽  
YANN LELIÈVRE ◽  
EMMANUELLE OMNES
Keyword(s):  
New Species ◽  
Deep Sea ◽  
Hydrothermal Vents ◽  
Juan De Fuca Ridge ◽  
Cold Seeps ◽  
Molecular Analyses ◽  
The Third ◽  
Juan De Fuca ◽  
Ne Pacific ◽  
A New Species

Hesionids are a very speciose group of polychaetes. In the deep sea, they occur in different environments such as hydrothermal vents, cold seeps, abyssal depths or whale falls. In the present study, a new species of Hesionidae, Hesiospina legendrei sp. nov. has been identified based on morphological and molecular (16S and COI genes) data from hydrothermal vents located in Juan de Fuca Ridge (NE Pacific Ocean). This new species is characterized by trapezoid prostomium; proboscis with high number of distal papillae (20–27), a pair of sac-like structures inserted ventro-laterally in proboscis; notopodia lobe reduced with multiple, slender aciculae on segments 1–5; and neuropodia developed with single, simple chaeta, and numerous, heterogomph falcigers, with 1–2 inferiormost having elongated hood. Hesiospina legendrei sp. nov. is the third described species in the genus. Sequences from the two previously described Hesiospina species are included in the molecular analyses, and although the genes used in this study are not sufficient to resolve the relationships on genus level, the result raises questions about the cosmopolitan aspect of H. vestimentifera. 

Levensteiniella manusensis sp. nov., a new polychaete species (Annelida: Polynoidae) from deep-sea hydrothermal vents in the Manus Back-Arc Basin, Western Pacific

Zootaxa ◽  
2018 ◽  
Vol 4388 (1) ◽  
pp. 102 ◽  
Author(s):  
XUWEN WU ◽  
KUIDONG XU
Keyword(s):  
New Species ◽  
Deep Sea ◽  
Hydrothermal Vents ◽  
Western Pacific ◽  
Posterior Border ◽  
Polychaete Species ◽  
Males And Females ◽  
Back Arc ◽  
A New Species

A new species belonging to the subfamily Macellicephalinae (Annelida: Polynoidae), Levensteiniella manusensis sp. nov., is described based on material collected from deep-sea hydrothermal vents in the Manus Back-Arc Basin. The new species is readily distinguished from the congeners by having two pairs of ventral papillae on segments 11 and 12, the first pair of which is distally dichotomous. Levensteiniella manusensis is also characterized by the combination of the notochaetae which are smooth or serrated on the curved side, and the elytra with micro- and macropapillae on the surface and thickened bulbous projections on the posterior border. Based on morphological comparisons of the main features, we provide two keys to six species of Levensteiniella described to date based on males and females respectively. 

scholarly journals Linking regional variation of epibiotic bacterial diversity and trophic ecology in a new species of Kiwaidae (Decapoda, Anomura) from East Scotia Ridge (Antarctica) hydrothermal vents

2014 ◽  
Vol 4 (1) ◽  
pp. 136-150 ◽  
Author(s):  
Katrin Zwirglmaier ◽  
William D. K. Reid ◽  
Jane Heywood ◽  
Christopher J. Sweeting ◽  
Benjamin D. Wigham ◽  
...  
Keyword(s):  
New Species ◽  
Bacterial Diversity ◽  
Regional Variation ◽  
Hydrothermal Vents ◽  
Trophic Ecology ◽  
Scotia Ridge ◽  
A New Species

scholarly journals A new deep-sea scalpelliform barnacle, Vulcanolepas buckeridgei sp. nov. (Eolepadidae: Neolepadinae) from hydrothermal vents in the Lau Basin

Zootaxa ◽  
2018 ◽  
Vol 4407 (1) ◽  
pp. 117 ◽  
Author(s):  
BENNY K.K. CHAN ◽  
YEN-WEI CHANG
Keyword(s):  
New Species ◽  
Deep Sea ◽  
Hydrothermal Vents ◽  
Dna Barcode ◽  
South Pacific ◽  
The South ◽  
Lau Basin ◽  
Basal Angle ◽  
A New Species

The present study describes a new species of Vulcanolepas from the Lau Basin in the South Pacific. The basal angle of the tergum of Vulcanolepas buckeridgei sp. nov. is elevated from the capitular-peduncular margin at ~1/6 of the capitular height. The mandibles of V. buckeridgei sp. nov. are tridentoid; the cutting margins of the second and third teeth are long and each tooth possesses 18–20 sharp spines. The proximal segments of the anterior and posterior rami of cirrus I are protuberant and with dense, simple setae. DNA barcode sequences of Vulcanolepas buckeridgei sp. nov. are similar to Vulcanolepas sp. 1 collected from the Lau Basin (Herrera et al. 2015). Vulcanolepas buckeridgei is morphologically similar to Vulcanolepas ‘Lau A’ collected in the Lau Basin (Southward & Newman 1998). This suggests that Vulcanolepas buckeridgei sp. nov. is widespread in the Lau Basin. 

First columbellid species (Gastropoda: Buccinoidea) from deep-sea hydrothermal vents, discovered in Okinawa Trough, Japan

Zootaxa ◽  
2017 ◽  
Vol 4363 (4) ◽  
pp. 592
Author(s):  
CHONG CHEN ◽  
HIROMI KAYAMA WATANABE ◽  
JUAN FRANCISCO ARAYA
Keyword(s):  
New Species ◽  
Deep Sea ◽  
Hydrothermal Vent ◽  
Hydrothermal Vents ◽  
Okinawa Trough ◽  
First Record ◽  
Hydrothermal Field ◽  
Molluscan Diversity ◽  
Chemosynthetic Ecosystems ◽  
A New Species

The molluscan diversity of deep-sea chemosynthetic ecosystems in Japan has been in general well documented with about 80 described species, of which over half are gastropods (Sasaki et al. 2005; Fujikura et al. 2012; Sasaki et al. 2016). Recently, however, a number of novel hydrothermal vent sites were discovered in the area using multibeam echo-sounding (Nakamura et al. 2015), providing opportunities for new discoveries. As a part of ongoing studies documenting the biodiversity of such sites, we present the first record of Columbellidae from hydrothermal vents, with a new species recovered from Natsu and Aki sites, in the Iheya North hydrothermal field (for map and background on the vent field see Nakamura et al. 2015). 

scholarly journals Macrostylis cerritus sp. nov., a new species of Macrostylidae (Isopoda: Asellota) from the Weddell Sea, Southern Ocean

Zootaxa ◽  
2009 ◽  
Vol 2096 (1) ◽  
pp. 356-370
Author(s):  
AIDAN VEY ◽  
SASKIA BRIX
Keyword(s):  
New Species ◽  
Southern Ocean ◽  
Deep Sea ◽  
Weddell Sea ◽  
Ventral Spine ◽  
A New Species

Macrostylis cerritus sp. nov. (Macrostylidae) is described from the Weddell Sea, Antarctica, at a depth of 2149 m. The new species differs from other species of Macrostylis due to the incisor with 4 cusps; the strongly hook-shaped ischium of pereopod 3; pereopod 4 being greatly reduced and juvenile in appearance; the operculum bearing a ventral spine-like seta; and the absence of pleopod 5. This species is the fourth deep-sea macrostylid identified from the Southern Ocean, and is one more species described from the specimens of ANDEEP I–III expeditions.

Description of a new species of deep-water snake eel, Ophichthus mccoskeri (Ophichthidae: Ophichthinae) from Andaman Sea, India

Zootaxa ◽  
2019 ◽  
Vol 4686 (1) ◽  
pp. 112-118
Author(s):  
K. S. SUMOD ◽  
YUSUKE HIBINO ◽  
HASHIM MANJABRAYAKATH ◽  
V. N. SANJEEVAN
Keyword(s):  
New Species ◽  
Deep Water ◽  
Deep Sea ◽  
Short Distance ◽  
Andaman Sea ◽  
Pectoral Fin ◽  
Dorsal Fin ◽  
Water Snake ◽  
Mandibular Teeth ◽  
A New Species

A deep-sea species of snake eel (family Ophichthidae, subfamily Ophichthinae) Ophichthus mccoskeri sp. nov. is described based on 6 specimens (331–447 mm total length) trawled at 314–363 m depth in Andaman waters, India. This species is differentiated from its deep-water congeners by a combination of characters such as its large eyes, dorsal-fin origin a short distance behind pectoral-fin tip, anal fin black posteriorly, three preopercular pores, maxillary and mandibular teeth ending as triserial, and in a vertebral formula of 20/55/153. 

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