New species of Philobryidae (Bivalvia: Pteriomorphia) from Patagonian and Antarctic waters

Recent tanaidacean material collected from Antarctic waters, primarily during the ANDEEP expeditions of 2002 and 2005, includes a number of new taxa attributable to the families Nototanaidae and Typhlotanaidae sensu Sieg. Analysis of this material has exposed a problem with the recent contention of the two families, and has revealed consistent morphological trends which support the distinction of these two families. In the present paper, examination of both museum specimens and newly-collected material, has allowed a re-analysis based on a series of detailed morphological observations, resulting in a new definition of the families Typhlotanaidae Sieg, 1984 with the establishment of five new genera (Hamatipeda n. gen., Larsenotanais n. gen., Pulcherella n. gen., Torquella n. gen., Typhlamia n. gen.), a the description of thirteen new species, the redescription of fifteen species, and the construction of keys for the determination of typhlotanaid genera and of the species of three newly-erected genera.

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Nothria and Anchinothria (Annelida: Onuphidae) from eastern Australian waters, with a discussion of ontogenetic variation of diagnostic characters

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315412001956 ◽

2013 ◽

Vol 93 (6) ◽

pp. 1481-1502 ◽

Cited By ~ 6

Author(s):

Nataliya Budaeva ◽

Hannelore Paxton

Keyword(s):

New Species ◽

First Record ◽

Diagnostic Value ◽

Wide Distribution ◽

Eastern Coast ◽

Ontogenetic Variation ◽

Size Dependent ◽

Antarctic Waters ◽

Shallow Subtidal ◽

Japanese Waters

Nothria and Anchinothria, two sister genera of onuphid worms were studied from eastern Australian waters. Nothria abyssia, with a wide distribution in Pacific and Antarctic waters is reported from slope depths south-east of Australia, while N. otsuchiensis, described from Japanese waters, was found along the eastern coast of Australia from shallow subtidal to deep slope areas. Anchinothria parvula sp. nov. is described, based on the presence of uni- and bidentate pseudocompound falcigers in the first three pairs of parapodia, absence of branchiae and appearance of limbate chaetae from chaetiger 2, subacicular hooks from chaetigers 6–8 and pectinate chaetae from chaetiger 14. The new species represents the first record of the genus in Australian waters. Ontogenetic variation of chaetal composition and morphology of parapodia was estimated in two Nothria species examined. Three size-related morphotypes with different chaetal composition and morphology of anterior falcigers were revealed in N. abyssia and N. otsuchiensis. The number of chaetigers with pseudocompound falcigers is the only character independent of size of the specimens in both examined species. Distribution of subacicular hooks and postchaetal lobes is shown to be size-dependent. The following characters are considered of diagnostic value only when scored in adults: presence/absence of simple falcigers in anterior parapodia; chaetiger of origin of limbate chaetae, pectinate chaetae, and subacicular hooks; and number of chaetigers with auricular prechaetal lobes and digitiform postchaetal lobes. The use of adult specimens with the final set of definitive morphological structures for diagnoses of Nothria species is suggested.

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New species of the genus Isoschizoporella (Bryozoa: Gymnolaemata: Cheilostomatida: Eminooeciidae) from the Weddell Sea

Zoosystematica Rossica ◽

10.31610/zsr/2017.26.2.209 ◽

2017 ◽

Vol 26 (2) ◽

pp. 209-211

Author(s):

V.I. Gontar’

Keyword(s):

New Species ◽

Weddell Sea ◽

The Other ◽

Research Vessel ◽

Frontal Surface ◽

Strongly Convex ◽

Antarctic Waters ◽

Antarctic Expedition ◽

A New Species

A new species, Isoschizoporela marisweddelli sp. nov., from the bryozoan order Cheilostomatida was described within the genus endemic for Antarctic waters. Fragments of colonies of the species were found in the Weddell Sea by the German Antarctic Expedition ANT XIII/3 on the research vessel “Polarstern” in 1996. The species is distinguished from the other species of Isoschizoporella by the incrusting colony, elongate, hexagonal and convex autozooids, semicircular primary orifice with shallow sinus, strongly convex avicularian chamber, avicularium with semicircular mandible, and additional avicularium on frontal surface of autozooid. The species belongs to the infraorder Ascophora, superfamily Schizoporelloidea.

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Three new species of the genus Oligobregma (Polychaeta, Scalibregmatidae) from the Scotia and Weddell Seas (Antarctica)

Zootaxa ◽

10.11646/zootaxa.1391.2 ◽

2007 ◽

Vol 1391 (1) ◽

pp. 35 ◽

Cited By ~ 1

Author(s):

MYRIAM SCHÜLLER ◽

BRIGITTE HILBIG

Keyword(s):

New Species ◽

Antarctic Waters ◽

Three New Species ◽

Southern Oceans

Three new species of the scalibregmatid genus Oligobregma Kudenov & Blake, 1978 are described from Antarctic waters. The species are best distinguished by the number and arrangement of acicular spines in anterior notopodia. While Oligobregma pseudocollare sp. nov., bears two rows of spines in the first two notopodia, spines are arranged in single rows in Oligobregma blakei sp. nov. In Oligobregma quadrispinosa sp. nov., the first four chaetigers are armed with acicular spines. The species were collected from depths between 753 and 4069 m in the Scotia and Weddell Seas. A comparison with further species of Oligobregma known from Southern Oceans is given.

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Synopsis of Amphipoda from two recent Ross Sea voyages with description of a new species of Epimeria (Epimeriidae, Amphipoda, Crustacea)

Zootaxa ◽

10.11646/zootaxa.2167.1.4 ◽

2009 ◽

Vol 2167 (1) ◽

pp. 59-68 ◽

Cited By ~ 6

Author(s):

ANNE-NINA LÖRZ

Keyword(s):

New Species ◽

Ross Sea ◽

Similar Species ◽

Unique Combination ◽

Antarctic Waters ◽

The Family ◽

A New Species

Two recent voyages to the Ross Sea in 2004 and 2008 collected over 3000 benthic Amphipoda. The composition of 30 amphipod families is presented, and a focus is given to the family Epimeriidae from which a new species described. Epimeria larsi sp. nov. from 1950 m depth, is the deepest occurring species of the genus known from Antarctic waters. This increases the number of known species of Epimeriidae from Antarctica to 27. Epimeria larsi can be distinguished from similar species by the unique combination of following characters: coxa 5 posteroventral corner produced, epimeral plate posteroventral corner rounded, and coxa 1–3 apically rounded.

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A new species of Cirratulus (Annelida: Polychaeta) described from a shallow-water whale bone in Antarctica

Zootaxa ◽

10.11646/zootaxa.3340.1.4 ◽

2012 ◽

Vol 3340 (1) ◽

pp. 59 ◽

Cited By ~ 4

Author(s):

SERGI TABOADA ◽

STACY DONER ◽

JAMES A. BLAKE ◽

CONXITA AVILA

Keyword(s):

New Species ◽

Feeding Preferences ◽

Sea Floor ◽

Light Yellow ◽

Antarctic Waters ◽

Yellow Orange ◽

One Year ◽

The Antarctic ◽

Orange Color ◽

A New Species

A new species of Cirratulus Lamarck, 1818 is described from the shallow Antarctic waters of Deception Island (SouthShetland Islands). Cirratulus balaenophilus sp. nov. is the first cirratulid to be described from a fresh whale bone that wasexperimentally deployed for one year on the Antarctic sea floor. The species is characterized by the lack of spines andeyes, the number of dorsal tentacles arranged in an arc, and its light yellow-orange color in life. The cytochrome c oxidasesubunit I (COI) sequence is presented, as well as some remarks about its feeding preferences and ecology. A comparison with congeneric species occurring in Antarctica and adjacent waters is also provided.

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