scholarly journals A new genus and four new species of sea cucumbers (Echinodermata) from Admiralty Bay, King George Island

2013 ◽  
Vol 34 (1) ◽  
pp. 67-86 ◽  
Author(s):  
P. Mark O’Loughlin ◽  
Anna Stępień ◽  
Marek Kuźniak ◽  
Didier Van Den Spiegel
Keyword(s):  
New Species ◽  
Species Complex ◽  
Body Wall ◽  
New Genus ◽  
King George Island ◽  
Sea Cucumbers ◽  
Body Form ◽  
Admiralty Bay

Abstract Four new Antarctic holothuroid species are described for specimens from Admiralty Bay in King George Island. A new genus Dendrelasia O’Loughlin is erected for new cucumariid species Dendrelasia sicinski with dendrochirotid body form and elasipodid− type spinous rod ossicles. Cucumariid Staurocucumis krzysztofi has bowl ossicles predominantly with marginal teeth. Provisionally−assigned thyonid Allothyone presleri has table ossicles with spires comprising predominantly four pillars. Molpadiid Molpadia magdae has a prickly cover of irregular table ossicle spires and fusiform table discs in both body wall and tail. Staurocucumis liouvillei (Vaney) is a “species complex”

On the “Hippolyte commensalis Kemp, 1925” species complex (Decapoda, Caridea, Hippolytidae), with the designation of a new genus and description of two new species from the Indo-West Pacific

Zootaxa ◽  
2011 ◽  
Vol 2768 (1) ◽  
pp. 32 ◽  
Author(s):  
IVAN MARIN ◽  
JUNJI OKUNO ◽  
TIN-YAM CHAN
Keyword(s):  
New Species ◽  
Type Species ◽  
Species Complex ◽  
New Genus ◽  
Identification Key ◽  
Soft Corals ◽  
West Pacific ◽  
Two New Species ◽  
Incisor Process

Only one species of hippolytid shrimp, namely Hippolyte commensalis Kemp, 1925, was previously known to be associated with alcyonacean soft corals (Octocorallia, Alcyonacea) in the Indo-West Pacific. Recent collections revealed that at least three distinct hippolytid species are associated with alcyonacean soft corals. Moreover, these alcyonacean-associated hippolytids differ considerably from all other species of the genus Hippolyte Leach, 1814 in having a smooth rostrum bearing a single subapical ventral tooth, reduced styliform incisor process of the mandible, the basal antennular segment without ventromedial tooth, and the ambulatory pereiopods lacking or with only relatively small distoventral spines. A new genus, Alcyonohippolyte gen. nov., is thus established for Hippolyte commensalis Kemp, 1925 and two new species. Alcyonohippolyte dossena sp. nov. (the type species of the new genus) mainly differs from the congeners in having a humpbacked carapace. Alcyonohippolyte maculata sp. nov. closely resembles A. commensalis but clearly differs in having a furry carapace and distinct coloration, as well as in association with different alcyonacean host. An identification key is provided as well as information on the live coloration and host for all species of Alcyonohippolyte gen. nov.

Thandarum hernandezi, a new genus and new species of sea cucumber family Sclerodactylidae (Echinodermata: Holothuroidea: Dendrochirotida) from the Southwestern Atlantic Ocean

Zootaxa ◽  
2012 ◽  
Vol 3304 (1) ◽  
pp. 63 ◽  
Author(s):  
MARIANO I. MARTINEZ ◽  
MARTÍN I. BROGGER
Keyword(s):  
New Species ◽  
Sea Cucumber ◽  
Body Wall ◽  
New Genus ◽  
The Body ◽  
Southwestern Atlantic ◽  
Double Row ◽  
Southwestern Atlantic Ocean ◽  
A New Species ◽  
Tube Feet

A new genus and a new species of dendrochirotid, Thandarum hernandezi gen. et sp. nov., is described from Buenos Airescoast in the Southwestern Atlantic. For this species is quite significant the body U shape, up to 14.08 mm (along thetrivium), with double row of podia restricted to the ambulacra. Other features are ossicles from body wall with buttonsand 4 pillar tables, tube feet with rods and end plate star-shaped; the introvert with rosettes and tentacles with rods. Thesecharacteristics require the recognition of a new genus, and the new species and represents the first sclerodactylid reported in Argentinean waters.

scholarly journals New species of desmosomatid isopods from Admiralty Bay, King George Island

2011 ◽  
Vol 32 (4) ◽  
pp. 321-340 ◽  
Author(s):  
Karol Zemko ◽  
Saskia Brix
Keyword(s):  
New Species ◽  
Body Shape ◽  
Original Description ◽  
The Body ◽  
King George Island ◽  
Admiralty Bay ◽  
Two New Species ◽  
South Shetlands

New species of desmosomatid isopods from Admiralty Bay, King George IslandTwo new species of desmosomatid isopods,Eugerdella margaretaesp. n. andEugerdella celatasp. n. are described from Admiralty Bay, King George Island, South Shetlands. Information is added to the original description ofEugerdella falklandica(Nordenstam, 1933) based on re-examination of the holotype. Both new species are similar toE. falklandica, for example by the body shape, the shape of pleotelson and presence of rows of four horn-like spines on the head. They are distinguished fromE. falklandicaby the number of setae on pereopod articles.Eugerdella celatasp. n. is distinguished by the presence of ventral spines on pereonites 1-4.

Bartonaspis new genus, a trilobite species complex from the base of the Upper Cambrian Sunwaptan Stage in North America

2007 ◽  
Vol 44 (7) ◽  
pp. 987-1003 ◽  
Author(s):  
Stephen R Westrop ◽  
Jonathan M Adrain
Keyword(s):  
New Species ◽  
North America ◽  
Related Species ◽  
Species Complex ◽  
New Genus ◽  
Upper Cambrian ◽  
New Material ◽  
Three New Species

Despite being reported widely from basal Sunwaptan strata, Dellea? punctata Palmer, 1965, is known from only four figured cranidia. New material from Nevada, Utah and Oklahoma, including librigenae and pygidia, indicate that specimens assigned previously to D.? punctata are best interpreted as a complex of related species that are assigned to a new genus, Bartonaspis. This genus is diagnosed by punctate sculpture, a pair of fossulae at the anterior corners of the glabella, and by a subelliptical pygidium with a short convex axis composed of three segments. Three new species, B. fredericksoni, B. palmeri, and B. wilsoni, are described and B. punctata (Palmer) is restricted to its holotype. Bartonaspis is known only from the Irvingella major Zone, and its first appearance defines the base of the Sunwaptan Stage. Dellea Wilson, 1949, is related to Bartonaspis and is differentiated from it primarily by pygidial morphology. In contrast to Bartonaspis, the pygidium of Dellea has an axis composed of four, rather than three, segments and a narrow concave border.

Dendrochirotid holothurians (Echinodermata: Holothuroidea: Dendrochirotida) including four new species, from off Misaki, Japan

Zootaxa ◽  
2018 ◽  
Vol 4455 (3) ◽  
pp. 429
Author(s):  
YUSUKE YAMANA ◽  
HISANORI KOHTSUKA
Keyword(s):  
New Species ◽  
Body Wall ◽  
The Body ◽  
South Coast ◽  
Sea Cucumbers ◽  
Body Morphology ◽  
Kanagawa Prefecture ◽  
Thick Lens ◽  
Internal Body

Four new dendrochirotid sea cucumbers, Neocucumis misakiensis sp. nov., Pseudocolochirus misakiensis sp. nov., Lipotrapeza purpurata sp. nov., and Pentamera misakiensis sp. nov., and three other known species, Amphicyclus japonicus Bell, 1884, Cucumaria tegulata Augustin, 1908, and Placothuria ohshimai Liao, 1997, are described from off Jyogashima Island, Misaki peninsula, south coast of Kanagawa Prefecture, Japan. In this study, Cucumaria tegulata Augustin, 1908, is referred to the genus Hemiocnus Mjobo & Thandar, 2016. Furthermore, a new phyllophorid genus Pseudoplacothuria is here erected to accommodate Placothuria ohshimai Liao, 1997. Although its external and internal body morphology and most of the ossicle morphology resemble those of Pentamera spp., it differs in possessing thick lens-shaped ossicles in the body wall, and also in possessing needle-shaped ossicles in the gonadal tubules.

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