scholarly journals A new genus and species of axiid shrimp (Crustacea, Decapoda) from a southwestern Indian Ocean seamount

2016 ◽  
Author(s):  
Peter C. Dworschak
Keyword(s):  
Indian Ocean ◽  
New Genus ◽  
New Genus And Species ◽  
Lateral Carina ◽  
Southwest Indian Ocean ◽  
Median Carina ◽  
Southwestern Indian Ocean ◽  
Hexactinellid Sponges

A new genus and species of axiid shrimp, Montanaxius mediumquod gen. et sp. nov., is described and illustrated based on three specimens collected from hexactinellid sponges from a seamount in the southwest Indian Ocean. The new genus is characterized by a laterally denticulate rostrum, short lateral carina, absence of submedian carina, a prominent toothed median carina, round pleomere pleura 2–5, pleurobranchs on second to fourth pereopods, and the presence of a male first pleopod and appendix interna on pleopods 3–5. It most closely resembles Levantocaris Galil & Clark, 1993 and Planaxius Komai & Tachikawa, 2008, but differs from the former by being gonochoristic, having a strongly elevated gastric region and well-developed eyes, and from the latter by its toothed median carina and the presence of a median telson spine.

scholarly journals <i>Navilithus altivelum</i>: a remarkable new genus and species of deep photic coccolithophores

2006 ◽  
Vol 25 (2) ◽  
pp. 141-151 ◽  
Author(s):  
Jeremy R. Young ◽  
Harald Andruleit
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
New Genus ◽  
Molecular Genetic ◽  
New Taxon ◽  
New Genus And Species ◽  
Significant Addition ◽  
A New Species ◽  
Genetic Results ◽  
Basal Structure

Abstract. A very distinctive new deep-photic coccolithophore is described from the NE Indian Ocean. The new species is trimorphic with: 200–300 body coccoliths bearing low spines attached by narrow stems to a basal narrow-rimmed placolith structure; up to 18 circum-flagellar coccoliths with tall sail-like spines; and up to 22 coccoliths with moderately elevated spines occurring both around the circum-flagellar coccoliths and antapically. These features make the coccolithophore unique and require placement in a new species and genus. The basal structure, however, shows similarities to a recently recognized group of narrow-rimmed placoliths. Hence, the new coccolithophore provides some support for this grouping as a significant addition to our understanding of coccolithophore biodiversity, and potentially an explanation for a set of anomalous molecular genetic results. In addition the new taxon provides further evidence that the deep-photic coccolithophore community is more diverse than has been assumed.

scholarly journals Pseudoisotachis Pocsii Váňa, A New Genus and Species of Liverwort from the Subantarctic Marion Island

2013 ◽  
Vol 58 (1) ◽  
pp. 55-58 ◽  
Author(s):  
Jiří Váňa
Keyword(s):  
New Species ◽  
Indian Ocean ◽  
New Genus ◽  
Southern Indian Ocean ◽  
Marion Island ◽  
New Genus And Species ◽  
Prince Edward Islands

AbstractA new genus and new species of liverwort, Pseudoisotachis Váňa and Pseudoisotachis pocsii Váňa, is described from Marion Island, part of the Prince Edward Islands, a subantarctic archipelago situated in the Kerguelen Province of the southern Indian Ocean. Family placement of the new genus and species is uncertain due to absence of androecia, gynoecia and sporophytes; morphologically it is compared with some genera of Isotachidaceae and with the genus Orthocaulis of Anastrophyllaceae. The new species is described and illustrated.

scholarly journals A new genus and species of deep-sea glass sponge (Porifera, Hexactinellida, Aulocalycidae) from the Indian Ocean

ZooKeys ◽  
2011 ◽  
Vol 136 ◽  
pp. 13-21 ◽  
Author(s):  
Sabyasachi Sautya ◽  
Konstantin Tabachnick ◽  
Baban Ingole
Keyword(s):  
Indian Ocean ◽  
Deep Sea ◽  
New Genus ◽  
New Genus And Species ◽  
Glass Sponge ◽  
The Indian Ocean

scholarly journals Note on Astrosclera willeyana lister

1912 ◽  
Vol 84 (575) ◽  
pp. 579-580 ◽  
Keyword(s):  
Indian Ocean ◽  
New Genus ◽  
New Genus And Species ◽  
Provisional Diagnosis ◽  
Unique Character ◽  
Christmas Island ◽  
Similar Kind

As the result of an investigation of 47 specimens of Astrosclera willeyana dredged by me off Christmas Island, Indian Ocean, I have found that this organism is a Siliceous Ectyonine Sponge with a supplementary skeleton of aragonite. The sponge owes its unique character to the fact of its being associated with a degenerate Floridean Alga. Sponge cells capture and envelop the algal tetraspores and carpospores and secrete around them concentric layers of aragonite. The spherules so formed are in many respects comparable with the cyst-pearls of Mollusca. Just as certain Ectyonine sponges make supplementary skeletons out of foreign particles of sand, Foraminifera, etc., so Astrosclera builds a similar kind of skeleton out of the spherules. The alga probably comes under the Ceramiales Oltm., and appears to belong to a new genus and species, of which a provisional diagnosis is given below:— Rhododiplobia , n. Gen., Alga degenerata, in spongia (scilicet Astrosclera willeyana Listeri) symbiotica, partim in carne, partim in calcis sceleto duro sita.

Ducatina umbilicata gen. et sp. nov., a remarkable Trapeliaceae from the subantarctic islands in the Indian Ocean

2017 ◽  
Vol 49 (2) ◽  
pp. 127-140 ◽  
Author(s):  
Damien ERTZ ◽  
Ulrik SØCHTING ◽  
Alice GADEA ◽  
Maryvonne CHARRIER ◽  
Roar S. POULSEN
Keyword(s):  
Indian Ocean ◽  
New Genus ◽  
Phylogenetic Analyses ◽  
Chemical Compounds ◽  
Lower Surface ◽  
New Taxon ◽  
New Genus And Species ◽  
Subantarctic Islands ◽  
The Indian Ocean

AbstractThe new genus and species Ducatina umbilicata is described from Îles Crozet and Îles Kerguelen. This lichen is characterized by an umbilicate thallus with a black verrucose lower surface and a greyish to dark olivaceous smooth upper surface having large verrucae, large semi-immersed cephalodia, semi-immersed apothecia with a prominent thalline margin, simple, mainly ellipsoid ascospores of 23–42×12–25 µm and the presence of unknown chemical compounds. Phylogenetic analyses using nuLSU and mtSSU sequences place Ducatina in the Trapeliaceae (Baeomycetales). The new taxon is closely related to Orceolina antarctica and O. kerguelensis, two other lichens endemic to these subantarctic islands, differing by its morphology and the lack of chemical compounds. Ducatina is the only genus in the Trapeliaceae to develop a large umbilicate thallus.

scholarly journals A new genus and species of fish parasitic cymothoid (Crustacea, Isopoda) from the Indian Ocean coast of South Africa, with a key to the externally attaching genera of Cymothoidae

ZooKeys ◽  
2019 ◽  
Vol 889 ◽  
pp. 1-15 ◽  
Author(s):  
Niel L. Bruce ◽  
Rachel L. Welicky ◽  
Kerry A. Hadfield ◽  
Nico J. Smit
Keyword(s):  
South Africa ◽  
Indian Ocean ◽  
Dorsal View ◽  
Anterior Margin ◽  
New Genus ◽  
The Body ◽  
Monotypic Genus ◽  
New Genus And Species ◽  
North Eastern ◽  
The Indian Ocean

Bambalocra intwalagen. et sp. nov. is described from Sodwana Bay, north-eastern South Africa. The monotypic genus is characterised by the broadly truncate anterior margin of the head with a ventral rostrum, coxae 2–5 being ventral in position not forming part of the body outline and not or barely visible in dorsal view, and the posterolateral margins of pereonites 6 and 7 are posteriorly produced and broadly rounded. The antennulae bases are widely separated, with both antennula and antenna slender. The species is known only from the type locality and the known hosts are species of Pomacanthidae (Angelfish). A revised key to the externally attaching genera of Cymothoidae is provided.

Pennsylvanian sponges from the Graford Formation, Wise County, Texas

2008 ◽  
Vol 82 (3) ◽  
pp. 492-510
Author(s):  
J. Keith Rigby ◽  
Mark G. McKinzie ◽  
Brooks B. Britt
Keyword(s):  
New Genus ◽  
New Genus And Species ◽  
North Central ◽  
The Family ◽  
North Central Texas ◽  
Central Texas ◽  
Hexactinellid Sponges

A variety of Pennsylvanian sponges have been recovered from exposures along the shore of Lake Bridgeport and in nearby areas in Wise County, north-central Texas. Calcareous and hexactinellid sponges have locally weathered out of the Jasper Creek Shale (= upper Lake Bridgeport Shale) and the overlying Devil's Den Limestone of the Graford Formation, of Late Pennsylvanian Missourian age.The Demospongea protomonaxonids Heliospongia excavata King, 1933, and Coelocladia spinosa Girty, 1908 are represented in the studied collections by several specimens, as is the new genus and species Luterospongia texana. Agelasid ceractinomorph demosponges are represented by the fissispongiid Fissispongia jacksboroensis King, 1938, the maeandrostiid Maeandrostia kansasensis Girty, 1908, and the girtycoeliid, Girtycoelia typica King, 1933. Sponges of the Class Hexactinellida and the amphidiscophorid Family Stiodermatidae are represented by an extensive suite of specimens of the new genus and species Dermosphaeroidalis irregularis. Representatives of the hexactinellid reticulosid sponges include some unusually large specimens of the vase-shaped Endoplegma calathus Finks, 1960, of the Family Docodermatidae, and fragmental specimens of ?Stereodictyum orthoplectum Finks, 1960, of the Family Stereodictyidae. One unclassified root tuft fragment is also described and illustrated.Much of this diverse sponge fauna was endemic to the western embayment of Pangaea.

scholarly journals Gebrukothuria profundus, a new genus and species of laetmogonid holothurian (Elasipodida, Laetmogonidae) from around the Crozet Plateau in the Southern Indian Ocea

Zootaxa ◽  
2009 ◽  
Vol 2096 (1) ◽  
pp. 479-483
Author(s):  
ANTONINA ROGACHEVA ◽  
IAN A. CROSS ◽  
DAVID S. M. BILLETT
Keyword(s):  
Indian Ocean ◽  
Body Wall ◽  
New Genus ◽  
Morphological Characters ◽  
The Body ◽  
Southern Indian Ocean ◽  
New Genus And Species ◽  
The Family ◽  
Calcareous Deposits ◽  
Tube Feet

A new genus and species of laetmogonid holothurian (Elasipodida, Laetmogonidae), collected from around the Crozet Plateau in the Southern Indian Ocean, is described. It differs from other members of the family in that the body wall lacks the wheel-shaped calcareous deposits completely. Instead only rods are present. The genus is also distinguished by the combination of other morphological characters lacking in other known genera: absence of circum-oral and ventrolateral papillae together with development of midventral tube feet. All other members of the family Laetmogonidae are known to have wheel-shaped deposits, therefore diagnosis of the family is refined.

Sign in / Sign up

Export Citation Format

Share Document