Two new species of deep-water Caprella (Peracarida, Amphipoda, Caprellidae) from the Pacific coast of Mexico collected during the TALUD XIV cruise, with a checklist of species of Caprellidae recorded for the eastern Pacific

Crustaceana ◽  
2014 ◽  
Vol 87 (1) ◽  
pp. 41-63 ◽  
Author(s):  
Michel E. Hendrickx ◽  
Manuel Ayón-Parente
Keyword(s):  
New Species ◽  
Deep Water ◽  
Gulf Of California ◽  
Pacific Coast ◽  
Relative Length ◽  
The Body ◽  
Eastern Pacific ◽  
General Shape ◽  
Lateral Projection ◽  
Deep Water Species

Two new deep-water species of the genus Caprella are described from the central Gulf of California, Pacific coast of Mexico. Caprella calderoni new species is distinguished from the 32 previously recorded species of Caprella from the eastern Pacific by its smooth forehead and pereonites, body not particularly slender, gnathopod 2 inserted at about mid-length of the second pereonite, elongated gills and gnathopod 1, the relative length of antenna 2 articles, length of the flagellum of antenna 1, the lack of an antero-lateral projection on pereonites 2 and 3, and the length-height proportion of pereonite 1. It is close to C. striata Mayer, 1903, recorded from Alaska. Caprella striata, however, features a different number of articles in the antenna 1 flagellum, two latero-posterior spines on pereonites 6, a small dorsal tubercle on pereonites 5 and 6, and a poison spine on the propodus of gnathopod 2 (all lacking in the new species). The buccal appendages also present significant differences. Caprella mercedesae new species, belongs to a group of eastern Pacific species with a sharp spine on the forehead. It is distinguished from all these species by a combination of characters, including the general shape of the body (not robust), the insertion level of gnathopod 2, its general shape, and the relative length of its dactylus, the relative length of antennae 1 and 2, the shape and relative length of the gills, the proportionally shorter or longer pereonites, and the presence of dorsal tubercles on at least pereonites 5-7 (absent in the new species).

A new species of Cymbasoma (Copepoda, Monstrilloida) from the northern coast of Turkey (Black Sea) with comments on the C. longispinosum species-group

Crustaceana ◽  
2014 ◽  
Vol 87 (11-12) ◽  
pp. 1393-1410 ◽  
Author(s):  
F. Üstün ◽  
T. Terbiyik Kurt ◽  
E. Suárez-Morales
Keyword(s):  
New Species ◽  
Black Sea ◽  
Gulf Of California ◽  
Relative Length ◽  
Species Group ◽  
The Body ◽  
The Black Sea ◽  
Northern Coast ◽  
Black Sea Coast ◽  
The One

Cymbasoma sinopense sp. nov. is described from an adult female collected off the Sinop coast, in the southern Black Sea, Turkey. This is the first species of this genus recorded from the Black Sea coast of Turkey. The new species is a member of the widespread Cymbasoma longispinosum species-group, and it closely resembles C. chelemense Suárez-Morales & Escamilla, 1997 from the Yucatan Peninsula and C. californiense Suárez-Morales & Palomares-García, 1999 from the Gulf of California. This species can be distinguished by a combination of subtle characters, including the body proportions, the structure and armature of the fifth legs, the ornamentation of the genital somite, and the relative length of the ovigerous spines. A previous report of C. longispinosum from the northern Black Sea probably represented a misidentified record of C. sinopense sp. nov. The Mediterranean reports refer to a species that is different from the one of the Black Sea. Comparative comments and data including the main taxonomic characters of members of the Cymbasoma longispinosum species-group are presented. Overall, it is confirmed that records of this species from different geographic areas should be revised carefully because they could represent undescribed species. A key for the identification of the females of the currently known species assigned to the Cymbasoma longispinosum species-group is included.

Alpheus luiszapatai, a new species of rare and colorful deep water alpheid shrimp (Crustacea: Decapoda: Alpheidae) from Arusí, Chocó Department, Pacific Coast of Colombia

Zootaxa ◽  
2018 ◽  
Vol 4403 (3) ◽  
pp. 540 ◽  
Author(s):  
GABRIEL E. RAMOS-TAFUR
Keyword(s):  
New Species ◽  
Deep Water ◽  
Pacific Coast ◽  
Morphological Characters ◽  
Species Group ◽  
Eastern Pacific ◽  
Single Female ◽  
Western Atlantic ◽  
A New Species ◽  
Alpheid Shrimp

A new species of deep water alpheid shrimp, Alpheus luiszapatai sp. nov., from Arusí, Chocó, Pacific coast of Colombia is described. The single female known was collected between the discarded bycatch of deep water shrimp trawls dedicated to the commercial fisheries of the “coliflor” shrimp Solenocera spp. This new species is placed putatively in the Alpheus brevirostris (Olivier, 1811) species group, and share some external morphological characters with Alpheus hephaestus Bracken-Grissom & Felder, 2014. It can be differentiated by the shape and ornamentation of major and minor chelipeds, the propodi and dactyli of third to fifth pereopods, the diaresis of uropodal exopod, the length of the rostral carina, color in life and bathymetric distribution. Additional comparison with another congeners pertaining to this species group complex from the eastern Pacific, western Atlantic and other oceanographic regions is discussed. A key for Alpheus brevirostris species group from the eastern Pacific is presented. 

A new deep-water species ofEpimeria(Amphipoda: Gammaridea: Epimeriidae) from the continental slope of western Mexico

2012 ◽  
Vol 93 (4) ◽  
pp. 991-997 ◽  
Author(s):  
I. Winfield ◽  
M. Ortiz ◽  
M.E. Hendrickx
Keyword(s):  
New Species ◽  
New Zealand ◽  
Deep Water ◽  
Gulf Of California ◽  
Relative Size ◽  
Western Mexico ◽  
East Pacific ◽  
Deep Water Species ◽  
A New Species ◽  
Water Species

A new species of deep waterEpimeriais described based on material collected in 1526–1586 m depth during the TALUD X expedition in the central Gulf of California, Mexico. It is the sixth species of this genus reported for the East Pacific.Epimeria morroneisp. nov. is morphologically similar toE. norfanziLörz, 2011 (New Zealand, 1268 m depth) andE. coraJ.L. Barnard, 1971 (off Oregon, USA, 2086 m depth).Epimeria morroneisp. nov., however, differs from these two species by a combination of several characters, including: vestigial eyes; multidentate mandibular lacinia mobilis; a distinct setae arrangement in palm and dactylus of gnathopods 1–2; the shape and relative size of coxae 1–5; and the shape of the telson.

scholarly journals A new species of chimaera, Hydrolagus melanophasma sp. nov. (Chondrichthyes: Chimaeriformes: Chimaeridae), from the eastern North Pacific

Zootaxa ◽  
2009 ◽  
Vol 2218 (1) ◽  
pp. 59-68 ◽  
Author(s):  
KELSEY C. JAMES ◽  
DAVID A. EBERT ◽  
DOUGLAS J. LONG ◽  
DOMINIQUE A. DIDIER
Keyword(s):  
New Species ◽  
North Pacific ◽  
Gulf Of California ◽  
Pacific Coast ◽  
Eastern Pacific ◽  
Video Footage ◽  
Pectoral Fins ◽  
Dorsal Fin ◽  
The Pacific ◽  
A New Species

A new species of chimaera, Hydrolagus melanophasma sp. nov. (Chimaeridae), is described from the eastern North Pacific. It is distinct from other eastern Pacific chimaeroids by the following characteristics: a large slightly curved dorsal fin spine extending beyond dorsal fin apex, a long second dorsal fin of uniform height throughout, large pectoral fins extending beyond the pelvic fin insertion when laid flat, trifid claspers forked for approximately one-quarter the total clasper length and a uniform black coloration throughout. The new species is compared to other eastern Pacific members of the genus Hydrolagus including H. alphus, H. colliei, H. macrophthalmus, and H. mccoskeri. Remote Operated Vehicle (ROV) video footage has identified and documented Hydrolagus melanophasma from the Gulf of California. ROV observations suggest that individuals typically occur over soft-bottom habitats or cobble patches with minimal vertical relief. This is in contrast to other eastern Pacific Hydrolagus species that tend to occur in areas of high rocky relief. The known distribution of this new species at present extends from southern California, U.S.A., along the Pacific coast of Baja California, Mexico, and into the Gulf of California.

Synalpheus amintae sp. nov., a new species of sponge–dwelling snapping shrimp (Crustacea: Decapoda: Alpheidae) from Parque Nacional Natural Isla Gorgona, Pacific Coast of Colombia

Zootaxa ◽  
2019 ◽  
Vol 4646 (1) ◽  
pp. 173-188
Author(s):  
GABRIEL E. RAMOS-TAFUR ◽  
REBECA FRANKE-ANTE
Keyword(s):  
New Species ◽  
Gulf Of California ◽  
Pacific Coast ◽  
Distal Segment ◽  
Species Group ◽  
Eastern Pacific ◽  
Valid Species ◽  
Western Atlantic ◽  
Snapping Shrimp ◽  
A New Species

A new species of sponge–dwelling snapping shrimp, Synalpheus amintae sp. nov. from the Parque Nacional Natural Isla Gorgona, Pacific coast of Colombia, is described. This new species pertains to the denominated Synalpheus “Gambarelloides” species group sensu Coutière (1909)—previously known as “Laevimanus” group. It was collected in the southern part of the Island, during episodes of extreme low tides, known locally as “puja”. Synalpheus amintae sp. nov. is closely related to the only two other known species of the S. “Gambarelloides” species group from the eastern Pacific: Synalpheus occidentalis Coutière, 1909, from Gulf of San José, Lower California, and Synalpheus mulegensis Ríos, 1992, from Bahía Concepción, Gulf of California, and can be differentiated from them by the poorly developed distal portion of pollex of the major cheliped, the armature of the distal segment of third maxilliped, and the number of acute teeth of exopodal uropod. A discriminative analysis dealing with other three species of Synalpheus from the western Atlantic, with distinctive pollex of major chela reduced, is presented. A dichotomous key was elaborated to identify the species of Synalpheus “Gambarelloides” species group from the eastern Pacific. The number of valid species described of Synalpheus from the eastern Pacific is increased to 23. 

Systematics and biogeography of Tropical Eastern Pacific Chthamalus with descriptions of two new species (Cirripedia, Thoracica)

Zootaxa ◽  
2007 ◽  
Vol 1574 (1) ◽  
pp. 1-30 ◽  
Author(s):  
FÁBIO BETTINI PITOMBO ◽  
RON BURTON
Keyword(s):  
New Species ◽  
Genetic Divergence ◽  
Gulf Of California ◽  
Pacific Coast ◽  
Eastern Pacific ◽  
Sibling Pair ◽  
Outer Face ◽  
Tropical Eastern Pacific ◽  
Ecological Features ◽  
Two New Species

Distribution patterns of Chthamalus along the Tropical Eastern Pacific region have not yet been described, mostly due to unknown species ranges and the presence of cryptic species that has biased previous attempts to describe them. Prior to this paper, four formal and two informal species of Chthamalus have been recognized as occurring along the Pacific Americas coast: C. dalli Pilsbry; C. fissus Darwin; C. anisopoma Pilsbry; C. panamensis Pilsbry, Chthamalus sp. “cortezianus” and Chthamalus sp. “mexicanus”. The two informal species were already known to exist, based on previous studies using allozymes and gene sequencing, but their morphological characterizations were not determined, thus preventing their recognition and the ascertainment of their status under the International code of Zoological Nomenclature. The main goal of the present study was to discover the morphological differences that distinguish these two species, to determine their latitudinal range, to establish some relationship among the other species of Chthamalus, and to correlate these with the informal names previously used. Two new species of Chthamalus are described: C. hedgecocki sp. nov. occurring along the Mexican coast (Mexican province) and Chthamalus southwardorum sp. nov. occurring from the Gulf of California (Mexico) to the north of Peru, being a typical member of Panamanian s. l. Province. Both species belong to the Chthamalus fissus group of species as they have bidenticulate setae with basal guards on cirrus II and an absence of conical spines on the outer face of the exopod of cirrus I. The names Chthamalus sp. “cortezianus” is herein associated with C. hedgecocki and Chthamalus sp. “mexicanus” with C. southwardorum. An extensive sympatric distribution of Chthamalus species was noticed along the Eastern Pacific, and Chthamalus panamensis, previously known to be limited to the Panamanian coast, was found up to the Mexican coast in sympatry with C. hedgecocki. The COI genetic divergence between C. panamensis and C. hedgecocki varied between 2.8–4.3 using (GTR+G). We suggest that these species form a sibling pair based on to their morphological, ecological and genetic similarities and their evolution took place along the Eastern Pacific coast after the closure of the Isthmus of Panama. Chthamalus southwardorum is the best choice for a sibling pair with C. proteus, as they share morphological and ecological features; nevertheless they present a very high genetic divergence (24.3 to 25.1 GTR+G). Further studies are needed to clarify the evolutionary processes that led to the evolution of the Chthamalus fissus group of species along the Tropical Eastern Pacific coast and in the Caribbean.

Bougainvillia aberrans (Cnidaria, Hydrozoa), a new species of hydroid and medusa from the upper bathyal zone off Bermuda

1993 ◽  
Vol 71 (5) ◽  
pp. 997-1002 ◽  
Author(s):  
Dale R. Calder
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
North Atlantic ◽  
Deep Water ◽  
North Atlantic Ocean ◽  
Deep Water Species ◽  
A New Species ◽  
Water Species

Bougainvillia aberrans n.sp. is described from Bermuda in the western North Atlantic Ocean. Specimens were collected at a depth of 150 fathoms (274 m) from the polypropylene buoy line of a crab trap. The hydroid colony of B. aberrans is erect, with a polysiphonic hydrocaulus, a smooth to somewhat wrinkled perisarc, hydranths having a maximum of about 16 tentacles, and medusa buds arising only from hydranth pedicels. Medusae liberated in the laboratory from these hydroids differ from all other known species of the genus in having a long, spindle-shaped manubrium, lacking oral tentacles, having marginal tentacles reduced to mere stubs, and being very short-lived (surviving for a few hours at most). Gonads develop in medusa buds while they are still attached to the hydroids, and gametes are shed either prior to liberation of the medusae or shortly thereafter. The eggs are surrounded by an envelope bearing nematocysts (heterotrichous microbasic euryteles). The cnidome of both hydroid and medusa stages consists of desmonemes and heterotrichous microbasic euryteles. The diagnosis of the genus Bougainvillia is modified to accommodate this new deep-water species.

Laonicespecies (Polychaeta, Spionidae) from the Whittard Canyon (NE Atlantic) with descriptions of two new species

2017 ◽  
Vol 97 (5) ◽  
pp. 961-973 ◽  
Author(s):  
Andrey Sikorski ◽  
Laetitia M. Gunton ◽  
Lyudmila Pavlova
Keyword(s):  
New Species ◽  
North Atlantic ◽  
Deep Water ◽  
The Body ◽  
Identification Key ◽  
The Other ◽  
Ne Atlantic ◽  
Two New Species ◽  
Generic Groups ◽  
Number Of Segments

Four species ofLaonice(Annelida: Spionidae) were collected from the lower bathyal depths (3300–3700 m) in the Whittard Canyon, NE Atlantic. Two are herewith described as new species:Laonice whittardensissp. nov. andLaonice nataesp. nov. The other two areLaonice blakeiSikorski & Jirkov, 1988 andLaonice magnacristataMaciolek, 2000.Laonice whittardensishas genital pouches appearing from chaetiger 3, prostomium free of peristomium and bidentate hooks.Laonice nataebelongs to the subgenusAppelloefianov. with prostomium distinct from the peristomium, more than two vertical rows of capillaries in several anterior chaetigers, genital pouches present on a limited number of segments or totally absent. However, the absence of pronounced anterior widening of the body together with anterior branchiae, which are remarkably (nearly twice) longer than the notopodial postchaetal lobes, the narrow lanceolate notopodial postchaetal lobes, the pronounced pointedness of all postchaetal lobes (both notopodial and neuropodial) in the anterior half of body at least, and absence of genital pouches and the size of the body all distinguishL. nataefrom other species belonging to this subgenus. An identification key to all nine known deep-water (>400 m depth)Laonicespecies in North Atlantic is given and four previously recognized sub-generic groups are formally named:Laonice, Sarsianasubgen. nov.,Appelloefiasubgen. nov.,Norgensiasubgen. nov.

Acanthochondria helicoleni sp. nov. (Copepoda, Chondracanthidae) parasitic on Helicolenus lahillei (Scorpaeniformes, Sebastidae) from Argentinean waters

2010 ◽  
Vol 55 (4) ◽  
Author(s):  
Delfina Cantatore ◽  
Juan Timi
Keyword(s):  
New Species ◽  
Relative Size ◽  
Relative Length ◽  
Parasitic Copepod ◽  
The Body ◽  
Head Shape ◽  
A New Species ◽  
Shape And Size

AbstractA new species of a parasitic copepod, Acanthochondria helicoleni sp. nov. (Copepoda, Chondracanthidae), is described and illustrated from specimens collected within the branchial chambers of the rubio, Helicolenus lahillei Norman, 1937, from the Argentinean waters. The new species most closely resemble A. serrani Braicovich et Timi, 2009 collected in the same region, but differs in the general measurements and proportions of the body; primarily by the relative length of neck, shape of head, shape and size of genito-abdominal tagma and relative size of the trunk postero-lateral processes.

First finding of the shrimp genus Harperalpheus Felder & Anker, 2007 in the eastern Pacific, with description of a new species from Bahía Málaga, Colombia (Malacostraca: Decapoda: Alpheidae)

Zootaxa ◽  
2017 ◽  
Vol 4329 (2) ◽  
pp. 196 ◽  
Author(s):  
ARTHUR ANKER ◽  
JUAN FELIPE LAZARUS
Keyword(s):  
New Species ◽  
Type Species ◽  
Pacific Coast ◽  
Morphological Characters ◽  
Eastern Pacific ◽  
Western Atlantic ◽  
Holotype Specimen ◽  
First Finding ◽  
A New Species ◽  
Antennular Peduncle

A new infaunal species of the rare alpheid genus Harperalpheus Felder & Anker, 2007 is described from Bahía Málaga,  Pacific coast of Colombia, based on single, incomplete holotype specimen. Harperalpheus leptodactylus sp. nov. may be easily separated from the western Atlantic type species and only other species of the genus, H. pequegnatae Felder & Anker, 2007, by several morphological characters on the first and fifth pereiopod, as well as on the antennular peduncle. 

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