The systematics and ecology of a new genus of isopod (sphaeromatidae) from the west coast sandy beaches of India

1980 ◽  
Vol 11 (3) ◽  
pp. 251-262 ◽  
Author(s):  
A. Eleftheriou ◽  
D.M. Holdich ◽  
K. Harrison
Keyword(s):  
West Coast ◽  
New Genus ◽  
Sandy Beaches ◽  
The West

On some deep-sea Stenheliinae from the Gulf of California and the west coast of the Baja California Peninsula (Mexico): Wellstenhelia euterpoides sp. nov., and Wellstenvalia wellsi gen. et sp. nov. (Copepoda: Harpacticoida: Miraciidae)

Zootaxa ◽  
2021 ◽  
Vol 5051 (1) ◽  
pp. 117-150
Author(s):  
SAMUEL GÓMEZ ◽  
JOSÉ ANTONIO CRUZ-BARRAZA
Keyword(s):  
West Coast ◽  
Deep Sea ◽  
Gulf Of California ◽  
New Genus ◽  
Baja California ◽  
Baja California Peninsula ◽  
New Genus And Species ◽  
The West ◽  
Harpacticoid Copepods ◽  
One New Species

At present, only 11 species of harpacticoid copepods have been described from the deep sea of the Gulf of California and the west coast of the Baja California Peninsula. These efforts had until recently been focused exclusively on the families Ameiridae Boeck, Argestidae Por, and Rhizothrichidae Por. Preliminary analyses revealed also an important contribution of the subfamily Stenheliinae Brady (Miraciidae Dana) to the overall species richness and diversity of deep-sea benthic copepods from the west coast of the Baja California Peninsula, and the central and southern Gulf of California. One new species of the genus Wellstenhelia Karanovic & Kim, 2014, We. euterpoides sp. nov., and one new genus and species, Wellstenvalia wellsi gen. et sp. nov., are herein described from sediment samples taken at eight sampling stations in the west coast of the Baja California Peninsula and in the central and southern Gulf of California. Wellstenhelia euterpoides sp. nov. seems to be closely related to We. euterpe Karanovic & Kim, 2014 with which it shares the reduced armature complement of the baseoendopod of the female fifth leg. The so far monotypic genus Wellstenvalia gen. nov. was found to be closely related to Muohuysia Özdikmen, 2009 and Wellstenhelia. Some comments on the relationships between the new genus proposed here and other stenheliin genera and species are provided as a contribution towards the monophyly of the subfamily.  

New fossil portunids from Washington, USA, and Argentina, and a re-evaluation of generic and family relationships within the Portunoidea Rafinesque, 1815 (Decapoda: Brachyura)

2000 ◽  
Vol 74 (4) ◽  
pp. 636-653 ◽  
Author(s):  
Carrie E. Schweitzer ◽  
Rodney M. Feldmann
Keyword(s):  
New Species ◽  
North America ◽  
New Taxa ◽  
Family Relationships ◽  
West Coast ◽  
New Genus ◽  
New Combinations ◽  
The West

New portunoid fossils from southern Argentina and from the west coast of North America permit the reevaluation of the generic and family relationships within the Portunoidea Rafinesque, 1815. It has previously been suggested that the Portunidae and the Geryonidae Colosi, 1923, are closely related families (Manning and Holthuis, 1989). The new fossils suggest that the Geryonidae may in fact be derived from a portunid progenitor,ProterocarcinusFeldmann, Casadío, Chirino-Gálvez, and Aguirre Urreta, 1995, through a process of peramorphosis in which juveniles of the geryonid speciesChaceon peruvianus(d'Orbigny, 1842) resemble adults ofProterocarcinus latus(Glaessner, 1933). Examination of several genera within the portunid subfamily Polybiinae Ortmann, 1893, includingImaizumilaKarasawa, 1993;Megokkosnew genus;MinohellenusKarasawa, 1990;PororariaGlaessner, 1980;PortunitesBell, 1858; andProterocarcinus,suggests that the subfamily had an amphitropical distribution early in its history. New taxa reported here includeMegokkosnew genus andPortunites nodosusnew species. New combinations includeChaceon peruvianus(d'Orbigny, 1842),Imaizumila araucana(Philippi, 1887),Megokkos alaskensis(Rathbun, 1926),Megokkos hexagonalis(Nagao, 1932),Megokkos macrospinus(Schweitzer, Feldmann, Tucker, and Berglund, 2000),Minohellenus triangulum(Rathbun, 1926), andProterocarcinus latus(Glaessner, 1933).

scholarly journals Occigamasus, a new genus of pergamasine mites, with description of two new species from the west coast of North America (Parasitiformes: Gamasina: Parasitidae)

Acarologia ◽  
2019 ◽  
Vol 59 (4) ◽  
pp. 551-570
Author(s):  
Ilinca Juvara-Balş
Keyword(s):  
New Species ◽  
North America ◽  
West Coast ◽  
New Genus ◽  
Vancouver Island ◽  
New Combination ◽  
The West ◽  
Two New Species

Occigamasus n. gen., O. lindquisti n. sp. and O. makarovae n. sp. from Vancouver Island (Canada) and Oregon (U.S.A.) are described. Five other new species and their sites are noted but not enough specimens were available for adequate descriptions. Cycetogamasus californicus (Banks) sensu Hennessey and Farrier, 1988 is transferred to Occigamasus as a new combination.

Monopseudocuma a new genus from the North East Atlantic and redescription of Pseudocuma gilsoni Bacescu, 1950 (Cumacea: Pseudocumatidae)

Zootaxa ◽  
2006 ◽  
Vol 1203 (1) ◽  
pp. 39
Author(s):  
ALISON M. MCCARTHY ◽  
SARAH GERKEN ◽  
DAVID MCGRATH ◽  
GRACE P. MCCORMACK
Keyword(s):  
North Sea ◽  
West Coast ◽  
New Genus ◽  
East Atlantic ◽  
The West ◽  
The Past ◽  
North East ◽  
The North ◽  
The North Sea

The validity of Pseudocuma gilsoni B|cescu 1950 has been questioned in the past. The recent discovery of material in Irish waters, and in the North Sea, confirms the presence of the species in the North East Atlantic and provides the opportunity to present a full redescription. A new genus, Monopseudocuma, is erected to accommodate the species. A neotype is designated from the West coast of Ireland.

The Annual Reproductive Patterns of Bathyporeia Pilosa and Bathyporeia Pelagica [Crustacea: Amphipoda]

1970 ◽  
Vol 50 (2) ◽  
pp. 475-488 ◽  
Author(s):  
J. D. Fish ◽  
G. S. Preece
Keyword(s):  
Vertical Distribution ◽  
West Coast ◽  
Sandy Beach ◽  
Present Report ◽  
Sandy Beaches ◽  
Annual Reproductive Cycle ◽  
The West ◽  
Reproductive Patterns ◽  
Reproductive Cycles ◽  
The Vertical Distribution

The genus Bathyporeia has featured in many reports on the ecology of sandy beaches, yet little is known of the annual reproductive cycles of the species in British waters. Watkin (1938,1939a, b, 1941, 1942) has studied the taxonomy and aspects of the ecology of the genus, and more recently Salvat (1967) has described the annual reproductive cycle of B. pilosa Lindstrom, B. pelagica (Bate), B. sarsi Watkin and B. guilliamsonia (Bate) on the west coast of France. The present report is the result of an investigation into the vertical distribution and annual reproductive patterns of B. pilosa and B. pelagica on a sandy beach at Ynyslas, Cardiganshire. Whilst enabling comparisons to be made with Salvat's data, this study also forms the basis for an investigation into the ecophysiological complex of B. pilosa and B. pelagica.

The Biology of Eurydice Pulchra [Crustacea: Isopoda]

1970 ◽  
Vol 50 (3) ◽  
pp. 753-768 ◽  
Author(s):  
Susan Fish
Keyword(s):  
Population Structure ◽  
Life Cycle ◽  
West Coast ◽  
Sandy Beaches ◽  
British Isles ◽  
The West ◽  
Intertidal Population ◽  
Made In

Eurydice pulchra Leach is a common intertidal isopod of sandy beaches. Its occurrence around the British Isles has been described by Jones & Naylor (1967), and Salvat (1966) has described the life cycle and intertidal distribution of the species on the west coast of France. There are several records of its intertidal distribution in Britain (Elmhirst, 1931; Pirrie, Bruce & Moore, 1932; Rees, 1939; Watkin, 1942; Brady, 1942; Holme, 1949; Southward, 1953; Colman & Segrove, 1955; Perkins, 1956; M. Ladle, unpublished) and these suggest that its distribution is variable. Watkin (1942) found that the population structure of E. pulchra in late March and early April was comprised of ‘two distinct groups’ and similar findings were made in July by Scott (1960). The present study was made on a large intertidal population in the sands of the Dovey Estuary, Cardinganshire.

Swedish Plectida (Nematoda). Part 3. The genus Loveninema gen. n.

Zootaxa ◽  
2012 ◽  
Vol 3505 (1) ◽  
pp. 26
Author(s):  
OLEKSANDR HOLOVACHOV ◽  
SVEN BOSTRÖM
Keyword(s):  
New Species ◽  
Excretory Pore ◽  
Reproductive System ◽  
West Coast ◽  
New Genus ◽  
Ventral Side ◽  
The West ◽  
Two New Species ◽  
Amphidial Fovea ◽  
Ventral Edge

A new genus Loveninema gen. n., with two new species L. tubulosa gen. n., sp. n. and L. unicornis gen. n., sp. n. is de-scribed from bottom sediments collected in Skagerrak off the west coast of Sweden. Loveninema gen. n. is unique amongother genera of Plectida by possessing a midventral labial projection located on the ventral edge of the oral opening andprotruding anteriorly. Other diagnostic characters include: sclerotised labial framework in the shape of a conoid ring withthree projections extending posteriorly: one mid-dorsal, one left-subventral and one right-subventral; papilliform outer la-bial and cephalic sensilla; amphidial fovea a transverse slit located anterior to cephalic sensilla bases; excretory pore open-ing on the ventral side of the labial region; pharynx uniformly muscular, cylindrical; female reproductive systemdidelphic, amphidelphic; male reproductive system monorchic, with reflexed testis; spicules present; gubernaculum pres-ent or absent; either alveolar or tubular supplements present in males, absent in females; caudal glands and spinneret pres-ent. L. tubulosa gen. n., sp. n. is particularly characterised by the 0.66–1.12 mm long body; short midventral labialprojection; straight vagina without sclerotisations; male without alveolar and with 12–15 tubular supplements, 15.0–21.5µm long spicules, and with gubernaculum. L. unicornis gen. n., sp. n. is particularly characterised by the 0.65–0.98 mmlong body; long midventral labial projection; straight vagina without sclerotisations; male with up to 20 alveolar and without tubular supplements, 11.5–14.0 µm long spicules, and without gubernaculum.

Ruprechtia in the Miocene El Cien Formation, Baja California Sur, Mexico

IAWA Journal ◽  
2014 ◽  
Vol 35 (4) ◽  
pp. 430-443 ◽  
Author(s):  
Sergio R.S. Cevallos-Ferriz ◽  
Hugo I. Martínez-Cabrera ◽  
Laura Calvillo-Canadell
Keyword(s):  
New Species ◽  
West Coast ◽  
New Genus ◽  
Taxonomic Composition ◽  
Baja California Sur ◽  
New Genus And Species ◽  
The West ◽  
Axial Parenchyma ◽  
The Past ◽  
A New Species

Fossil woods from the El Cien Formation have yielded important information on the taxonomic composition and climate of a flora established in the west coast of Mexico during the Miocene. This report of a new genus and species, Ruprechtioxylon multiseptatus Cevallos-Ferriz, Martínez Cabrera et Calvillo-Canadell, is based on woods with the following combination of features: vessels solitary and in radial multiples of 2–3; vestured, alternate, oval to polygonal intervessel pits; vessel-ray and vessel-parenchyma pits similar in size to intervessel pits, but with slightly reduced to reduced borders; 2–5 septa per fibre; scanty paratracheal, unilateral and vasicentric axial parenchyma; uniseriate homocellular rays, occasionally locally biseriate; crystals in fibres. The presence of Ruprechtioxylon (Polygonaceae) in the El Cien Formation confirms that plants of lineages growing today under contrasting climates lived together in the past. This record adds a new species to the growing list of Neotropical taxa that were present in Mexico prior to the great Plio-Pleistocene exchange of biota in the Americas.

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