First record and a new species of Sericosura Fry & Hedgpeth, 1969 (Arthropoda: Pycnogonida: Ammotheidae) from a hydrothermal vent of Southwestern Indian Ridge

Zootaxa ◽  
2018 ◽  
Vol 4420 (1) ◽  
pp. 131
Author(s):  
JIANJIA WANG ◽  
DINGYONG HUANG ◽  
XIAOFENG SHI ◽  
RONGCHENG LIN ◽  
WENTAO NIU
Keyword(s):  
New Species ◽  
Hydrothermal Vent ◽  
Hydrothermal Vents ◽  
First Record ◽  
Hydrothermal Field ◽  
Male Specimen ◽  
Evolutionary Studies ◽  
Indian Ridge ◽  
A New Species ◽  
Southern Oceans

This is the first record of the genus Sericosura from the “Duanqiao” hydrothermal field on the Southwestern Indian Ridge. Collected material included two juvenile specimens temporarily assigned to S. bamberi and S. heteroscela respectively, and one male specimen with dimorphic legs here proposed as a new species, S. duanqiaoensis sp. nov. The discovery suggests potential connectivity among the hydrothermal vents of the Atlantic, Indian and Southern Oceans, expecting obtaining more specimens for further evolutionary studies to clarify the relationships of these hydrothermal vents. 

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 A new species of the genus Smacigastes Ivanenko & Defaye, 2004 (Tegastidae, Harpacticoida, Copepoda) from the Onnuri Vent Field in the Indian Ocean

2020 ◽  
Vol 96 (2) ◽  
pp. 699-714
Author(s):  
Jong Guk Kim ◽  
Jimin Lee
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Hydrothermal Vent ◽  
Hydrothermal Vents ◽  
First Record ◽  
Cold Seeps ◽  
Dichotomous Key ◽  
The Family ◽  
The Indian Ocean ◽  
A New Species

The genus Smacigastes Ivanenko & Defaye, 2004 (Harpacticoida, Copepoda) is the most primitive genus in the family Tegastidae Sars, 1904, occurring in deep-sea chemosynthetic environments, such as hydrothermal vents, cold seeps, whale falls and wood falls. Our exploration of the Onnuri Vent Field, the sixth active hydrothermal vent system in the Central Indian Ridge, resulted in the discovery of a new species in the genus Smacigastes. A detailed morphological analysis of S. pumilasp. nov. reveals that it most resembles S. barti Gollner, Ivanenko & Martínez Arbizu, 2008, described from a hydrothermal vent in the East Pacific Ridge; the new species can be distinguished from the existing species by the 8-segmented female antennule, the absence of an abexopodal seta on the antennary basis, the mandibular exopod represented by a single seta and the exopod of the first leg with five setae. This is the first record of Smacigastes in the Indian Ocean. A dichotomous key to species of the genus Smacigastes worldwide is provided.

scholarly journals Mesonerilla neridae sp. nov. (Nerillidae): First meiofaunal annelid from deep-sea hydrothermal vents

Zoosymposia ◽  
2009 ◽  
Vol 2 (1) ◽  
pp. 297-303 ◽  
Author(s):  
KATRINE WORSAAE ◽  
GREG W. ROUSE
Keyword(s):  
New Species ◽  
Deep Sea ◽  
Hydrothermal Vent ◽  
Hydrothermal Vents ◽  
Volcanic Glass ◽  
First Record ◽  
New Material ◽  
Broad Variety ◽  
Active Venting ◽  
A New Species

Though most common in coastal sandy bottoms, nerillid annelids have been found in a broad variety of habitats around the world and two genera have previously been reported from the deep sea. During a cruise to the southern East Pacific Rise and northern Pacific Antarctic Ridge (near Easter Island) in 2005, six specimens of a new species of Mesonerilla were collected at depths of 2234–2649 m. Samples were taken via DSV Alvin with a slurp gun collecting fine silt and volcanic glass shards in cracks, fissures, and mussel beds from 5–20 m away from active venting areas. As well as being the first deep-sea hydrothermal vent associated nerillid, this is the first record of an adult meiofaunal annelid from deep-sea hydrothermal vent areas and the first record of Mesonerilla from the deep sea. Based on the new material we here describe a new species of Mesonerilla, M. neridae sp. nov., with nine chaetigerous segments, three antennae, long chaetae, and almost no ciliation. It resembles the subtidal, interstitial M. roscovita in the shared presence of a short median antenna and M. fagei and M. lüderitzi by presence of chaetae in segment one and relatively short parapodial cirri.

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 of Mirocaris (Crustacea: Decapoda: Caridea: Alvinocarididae) associated with hydrothermal vents on the Central Indian Ridge, Indian Ocean

2006 ◽  
Vol 70 (1) ◽  
pp. 109-119 ◽  
Author(s):  
Tomoyuki Komai ◽  
Joel W. Martin ◽  
Krista Zala ◽  
Shinji Tsuchida ◽  
Jun Hashimoto
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
Hydrothermal Vents ◽  
Central Indian Ridge ◽  
Indian Ridge ◽  
A New Species

Notes on the genus Navicordulia Machado & Costa, 1995 (Odonata: Anisoptera: Corduliidae s. str.): description of a new species, phylogenetic affinities and aspects of biogeography

Zootaxa ◽  
2017 ◽  
Vol 4272 (2) ◽  
pp. 251 ◽  
Author(s):  
GÜNTHER FLECK
Keyword(s):  
New Species ◽  
French Guiana ◽  
First Record ◽  
South American ◽  
Single Male ◽  
Male Specimen ◽  
Median Carina ◽  
Phylogenetic Affinities ◽  
Central South ◽  
A New Species

Based on a single male specimen, a remarkable new species of the genus Navicordulia is described from the Massif du Mitaraka in French Guiana (Tumuc-Humac Mountains). Another new species of this genus is also reported from the same locality but is not described. This is the first record of the genus from French Guiana, hitherto being unknown within a radius of more than 1000 km. Apparent rarity or absence of records is probably due to its secretive habits. Navicordulia tumucurakensis sp. nov. presents unique characters not present in other species of the genus including: almost no excavation of the anal angle, proximal sternal pilose ridge of abdominal segment 7 transformed into two large lateral oreillets disconnected from the median carina, additional distal sternal pilose ridge transformed into a medial knob, epiproct not extending beyond the distal half of the cerci, very long cerci surpassing those of described species, cerci lacking ventro-medial carina and tubercle and exhibiting a distal ventral brush of hair-like setae. It is a forest species inhabiting hilly landscapes at low altitude, unlike other closely related intertropical species which are encountered in more elevated areas above 850 m. It is most closely related to N. longistyla, a typical cerrado species from the central Brazilian plateau or possibly to N. nitens from the central south Venezuelan Guaiquinima Tepui. Based on unique derived male abdominal structures and also on the female ovipositor and related structures, the South American genus Navicordulia and the Southeast Asian/Melanesian genus Metaphya are considered current adelphotaxa. This disrupted geographic distribution could be explained by a common ancestor having had a Gondwanian dispersal until the Late Cretaceous or Paleocene.

scholarly journals A new species of Nebalia (Crustacea, Leptostraca) from a hydrothermal field in Kagoshima Bay, Japan

ZooKeys ◽  
2019 ◽  
Vol 897 ◽  
pp. 1-18
Author(s):  
Takuma Hirata ◽  
Yoshihiro Fujiwara ◽  
Tomohiko Kikuchi
Keyword(s):  
New Species ◽  
Hydrothermal Vent ◽  
Hydrothermal Field ◽  
Lateral Margin ◽  
Distal Margin ◽  
Proximal Half ◽  
Kagoshima Bay ◽  
Mandibular Palp ◽  
Distribution And Ecology ◽  
A New Species

A new species of Leptostraca, Nebalia tagirisp. nov. is described and illustrated. This species was sampled from 200 m depth at a hydrothermal field in Wakamiko Caldera of Kagoshima Bay, Japan. Nebalia tagirisp. nov. is different from known Nebalia species as follows: rostral length 2.4 times as long as width; article 4 of antennule with 3–5 robust distal spines; antennular scale approximately twice as long as wide; article 3 of antenna with eight spines and nine spine-like setae along proximal half, two thin setae and six spine-like setae on external lateral face, six spines and four simple setae on distal margin; article 1 of second maxilla longer than article 2; article 2 of mandibular palp with two thin setae; exopod of pleopod 1 with 21 spines along lateral margin; furcal rami longer than combined length of pleonite 7 and telson; rounded denticles of pleonite 6 and 7; anal-plates ‘shoulder’ not distinct. Furthermore, this specimen is the first genus Nebalia found in the hydrothermal vent. The distribution and ecology of this new species is also discussed and a key to all species of Nebalia is provided.

Tritodynamia bengalensis n. sp., a new species of brachyuran crab from West Bengal state, India (Decapoda: Brachyura: Macrophthalmidae)

Zootaxa ◽  
2021 ◽  
Vol 4938 (3) ◽  
pp. 325-330
Author(s):  
JIGNESHKUMAR N. TRIVEDI ◽  
SANTANU MITRA ◽  
PETER K. L. NG
Keyword(s):  
New Species ◽  
Coastal Waters ◽  
West Bengal ◽  
Relative Length ◽  
First Record ◽  
Male Specimen ◽  
Brachyuran Crab ◽  
The Third ◽  
A New Species ◽  
Shallow Coastal Waters

Tritodynamia bengalensis n. sp. is described on the basis of a male specimen dredged from the shallow coastal waters of West Bengal state, India. The new species is morphologically similar to T. bidentata Yang & Tang, 2005 and T. serratipes Anker & Ng, 2014, but can be distinguished by the carapace shape, dentition of the pollex, relative length of the dactylus of the third maxilliped, proportions of the propodus of the third pereopod, and structure of the male left gonopod. This is the first record of the genus Tritodynamia from India. 

First record of the genus Enanea Lewis from the Chinese Mainland, with description of a new species (Coleoptera: Tenebrionidae: Diaperinae)

Zootaxa ◽  
2021 ◽  
Vol 5032 (1) ◽  
pp. 80-86
Author(s):  
CHENG-BIN WANG
Keyword(s):  
New Species ◽  
Southwest China ◽  
First Record ◽  
Chinese Mainland ◽  
Male Specimen ◽  
Diagnostic Characters ◽  
The Chinese Mainland ◽  
A New Species ◽  
Northwestern Yunnan ◽  
Coleoptera Tenebrionidae

A new species of the genus Enanea (Coleoptera: Tenebrionidae: Diaperinae), E. baba sp. n., is described and illustrated from Southwest China, based on a male specimen from Dulongjiang in northwestern Yunnan. Diagnostic characters of the new species are provided. This is the first record of an Enanea species from the Chinese Mainland, which represents a remarkable extension of the known range of the genus.  

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