Revision of the Alpheus nuttingi (Schmitt) species complex (Crustacea: Decapoda: Alpheidae), with description of a new species from the tropical eastern Pacific

The Alpheus nuttingi (Schmitt, 1924) species complex consists of three species. The only western Atlantic species, A. nuttingi, occurs from the southeastern United States to Brazil. The two eastern Pacific species are A. galapagensis Sivertsen, 1933 (synonyms: A. canalis Kim & Abele, 1988; A. cryptodentatus Christoffersen & Ramos, 1988), which occurs from the Gulf of California to Colombia and Galapagos, and A. millsae, n. sp., presently known only from a few localities in Panama. The three species differ morphologically, genetically, and in color pattern. The two eastern Pacific species both can be found in the intertidal, but A. millsae, n. sp. occurs slightly deeper, suggesting the possibility of ecological speciation. All evidence shows that A. nuttingi and A. millsae, n. sp. are transisthmian sister species, with A. galapagensis forming their sister clade. Genetic differentiation between the transisthmian sister species suggests a divergence time of approximately 6 mya, well before the final closure of the Isthmus of Panama.

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Revision of the Alpheus websteri Kingsley, 1880 species complex (Crustacea: Decapoda: Alpheidae), with revalidation of A. arenensis (Chace, 1937)

Zootaxa ◽

10.11646/zootaxa.1694.1.3 ◽

2008 ◽

Vol 1694 (1) ◽

pp. 51 ◽

Cited By ~ 6

Author(s):

ARTHUR ANKER ◽

CARLA HURT ◽

NANCY KNOWLTON

Keyword(s):

Species Complex ◽

Florida Keys ◽

Color Pattern ◽

Sister Species ◽

Eastern Pacific ◽

Northeastern Brazil ◽

Type Locality ◽

Color Patterns ◽

Western Atlantic

The Alpheus websteri Kingsley, 1880 species complex is revised. Alpheus websteri s. str. is redefined and restricted to the western Atlantic, ranging from the type locality in the Florida Keys to northeastern Brazil. The eastern Pacific A. arenensis (Chace, 1937), formerly a synonym of A. websteri, and the eastern Atlantic A. fagei Crosnier and Forest, 1966, are shown to be distinct from A. websteri morphologically, genetically and also by color pattern. Morphology, genetics and color patterns all suggest that A. websteri and A. arenensis are transisthmian sister species, with A. fagei being their closest relative. Complete synonymy, color photographs and GenBank barcodes (COI) are provided for all three species.

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Revision of theAlpheus cristulifronsspecies complex (Crustacea: Decapoda: Alpheidae), with description of a new species from the tropical eastern Atlantic

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s0025315408001136 ◽

2008 ◽

Vol 88 (3) ◽

pp. 543-562 ◽

Cited By ~ 9

Author(s):

Arthur Anker ◽

Carla Hurt ◽

Nancy Knowlton

Keyword(s):

Gulf Of California ◽

Molecular Data ◽

Sensu Stricto ◽

Eastern Pacific ◽

Gulf Of Guinea ◽

Western Atlantic ◽

Sister Clade ◽

The Caribbean ◽

Colour Patterns ◽

A New Species

The taxonomy of the snapping shrimpAlpheus cristulifronsRathbun, 1900, previously reported from the eastern Pacific and western and eastern Atlantic, is reviewed based on molecular data (COI), morphology and colour patterns. Three species are recognized in theA. cristulifronsspecies complex.Alpheus cristulifrons sensu strictois restricted to the western Atlantic, ranging from Florida and the Caribbean Sea to southern Brazil. The eastern PacificA. cristulifrons sensuKim & Abele, 1988 corresponds toA. utriensisRamos & Von Prahl, 1989, ranging from the Gulf of California to Colombia; this species can be separated fromA. cristulifronsby the absence of balaeniceps setae on the male minor chela and the presence of bands on the antennular and antennal flagella. The eastern AtlanticA. cristulifronssensuCrosnier & Forest, 1966 is described asA. xanthocarpussp. nov. based on recently collected material from the island of São Tomé in the Gulf of Guinea; this species differs fromA. cristulifronsby the posteriorly more extending rostral carina and the presence of conspicuous yellow spots on the carpus and chela of the second pereiopod. Molecular data suggest thatA. utriensisis the eastern Pacific sister clade to the amphi-Atlntic clade that includesA. cristulifronsandA. xanthocarpussp. nov.

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Revision of the family Euryplacidae Stimpson, 1871 (Crustacea: Decapoda: Brachyura: Goneplacoidea)

Zootaxa ◽

10.11646/zootaxa.2375.1.1 ◽

2010 ◽

Vol 2375 (1) ◽

pp. 1 ◽

Cited By ~ 9

Author(s):

PETER CASTRO ◽

PETER K. L. NG

Keyword(s):

Florida Keys ◽

Eastern Pacific ◽

Nominal Species ◽

Pacific Region ◽

Tropical Eastern Pacific ◽

Atlantic Region ◽

Western Atlantic ◽

The Family ◽

The World ◽

Pacific Species

The family Euryplacidae Stimpson, 1871, traditionally included in the Goneplacidae MacLeay, 1838, is revised based on the examination of the type material of many of its species as well as unidentified and previously identified material from around the world. The revised family now consists of 31 species (including five that are described as new) belonging to 13 genera (including four that are described as new): Eucrate De Haan, 1835, with eight species, of which one is new; Euryplax Stimpson, 1859, with two species; Frevillea A. Milne-Edwards, 1880, with three species; Henicoplax n. gen., with five species of which three are new; Heteroplax Stimpson, 1858, monotypic; Machaerus Leach, 1818, with two species; Nancyplax Lemaitre, García-Gómez, von Sternberg & Campos, 2001, monotypic; Platyozius Borradaile, 1902, monotypic; Psopheticoides Sakai, 1969, monotypic; Systroplax n. gen., monotypic; Trissoplax n. gen., with two species, of which one is new; Trizocarcinus Rathbun, 1914, with two species; Villoplax n. gen., monotypic; and Xenocrate Ng & Castro, 2007, monotypic. The genus Platyozius and Eucrate formosensis Sakai, 1974, are removed from the synonymy of Eucrate and E. alcocki Serène, in Serène & Lohavanijaya, 1973, respectively. Neotypes are selected for Heteroplax dentata Stimpson, 1858, and Pilumnoplax sulcatifrons Stimpson, 1858, two species described from Hong Kong that have a confusing taxonomic history. A neotype is also selected for Euryplax nitida Stimpson, 1859, described from the Florida Keys. Seven nominal species described by other authors were found to be junior subjective synonyms for other species: Eucrate affinis Haswell, 1882, E. costata Yang & Sun 1979, E. haswelli Campbell 1969, and Pseudorhombila sulcatifrons var. australiensis Miers, 1884, of Trissoplax dentata (Stimpson, 1858); Galene laevimanus (Lucas, in Jacquinot & Lucas, 1853) of Eucrate dorsalis (White, 1849); Heteroplax nagasakiensis Sakai, 1934, of H. transversa Stimpson, 1858; and Pilumnoplax sulcatifrons Stimpson, 1858, of Eucrate crenata (De Haan, 1835). Eight euryplacid genera are exclusively found in the Indo-West Pacific region (except one species introduced in the Mediterranean), one is exclusive to each the Eastern Atlantic and Tropical Eastern Pacific regions, three to the Western Atlantic region, and one genus has both Western Atlantic and Tropical Eastern Pacific species.

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On two new species of the shrimp genus Salmoneus Holthuis, 1955 (Decapoda, Caridea, Alpheidae) from the tropical eastern Pacific

Zootaxa ◽

10.11646/zootaxa.3957.5.2 ◽

2015 ◽

Vol 3957 (5) ◽

pp. 520 ◽

Cited By ~ 5

Author(s):

ARTHUR ANKER ◽

JUAN FELIPE LAZARUS

Keyword(s):

New Species ◽

Costa Rica ◽

Morphological Characters ◽

Sister Species ◽

Eastern Pacific ◽

Tropical Eastern Pacific ◽

Ecological Data ◽

Western Atlantic ◽

Two New Species ◽

Alpheid Shrimp

The present study deals two new alpheid shrimp species from the transisthmian Salmoneus ortmanni (Rankin, 1898) complex. Salmoneus alvarezi sp. nov. is described based on materials collected in Bahía Málaga, Colombia, and Punta Morales, Costa Rica, and is closely related to the western Atlantic S. ortmanni and S. wehrtmanni Anker, 2011. Salmoneus malagensis sp. nov. is described based on specimens from Bahía Málaga, Colombia, and beyond any doubts represents the eastern Pacific sister species of the western Atlantic S. carvachoi Anker, 2007. The two new species can be easily distinguished from each other by a number of morphological characters and colouration, and in addition appear to be ecologically separated. All previous records of S. ortmanni from the eastern Pacific are reassigned, some tentatively, to S. alvarezi sp. nov. based on description, illustrations or ecological data.

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Gracilaria parva sp. nov. (Gracilariales, Rhodophyta) a Diminutive Species from the Tropical Eastern Pacific

Taxonomy ◽

10.3390/taxonomy2010004 ◽

2022 ◽

Vol 2 (1) ◽

pp. 48-56

Author(s):

D. Wilson Freshwater ◽

Bo Williamson ◽

Paul W. Gabrielson ◽

Margarita Brandt

Keyword(s):

Dna Sequencing ◽

Eastern Pacific ◽

Rbcl Gene ◽

Eastern Pacific Ocean ◽

Tropical Eastern Pacific ◽

Type Specimens ◽

Western Atlantic ◽

Anatomical Features ◽

The Many ◽

Pacific Species

DNA sequencing of the plastid encoded rbcL gene supported by morpho-anatomical features reveals Gracilaria parva sp. nov. from Panama and Ecuador in the tropical eastern Pacific Ocean. In the rbcL phylogram, G. parva occurs in a clade sister to the western Atlantic species G. galatensis. Morphologically and anatomically, G. parva is distinguished from two similar, described tropical eastern Pacific species, G. brevis and G. veleroae by its small size, to 2.5 cm tall with branch widths mostly <2 mm occasionally to 4 mm, and by its two to three cell layered cortex. Gracilaria brevis and G. veleroae are taller, have wider branches, and a one cell layered cortex. DNA sequencing is needed to resolve the many diminutive species in the tropical eastern Pacific, particularly those occurring in turf communities. DNA sequencing of historical type specimens from the 19th and 20th centuries is also needed to correctly apply names in this region.

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CRUSTACEOS DECAPODOS DEL PACIFICO COLOMBIANO: LISTA DE ESPECIES Y CONSIDERACIONES ZOOGEOGRAFICAS

Bulletin of Marine and Coastal Research ◽

10.25268/bimc.invemar.1992.21.0.418 ◽

2016 ◽

Vol 21 ◽

Author(s):

Rafael Lemaitre ◽

Ricardo Alvarez León

Keyword(s):

Gulf Of California ◽

Pacific Coast ◽

Marine Species ◽

Eastern Pacific ◽

Nominal Species ◽

Review Of The Literature ◽

Tropical Eastern Pacific ◽

The Pacific ◽

History Of ◽

The Caribbean

The Pacific coast of Colombia has been poorly explored, and its fauna is one of the least known in the tropical eastern Pacific. Although knowledge of the decapod fauna from this coast has recently increased, the information is scattered in numerous sources. A review of the literature showed that 378 decapods have been reported from this coast, including the islands of Gorgona and Malpelo. The numbers of species are distributed as follows; Dendrobranchiata, 18; Caridea,79; Thalassinidea, 13; Palinura, 6; Anomura, 61; and Brachyura, 201 .Twenty-seven species are known exclusively from the Colombian coast, three of which are endemic to the islands of Malpelo or Gorgona. A list of nominal species is presented, including information on distribution, important references, and synonyms under which the taxa have been reported for this coast. A summary of the history of explorations of the Pacific coast of Colombia as it relates to decapods, is presented. Zoogeographic affinities are briefly discussed for the marine species based on published distributions. Affinities are greatest with the Gulf of California (51.8%), followed by the Galápagos (28.6%), the Indo-Pacific (8.8%), and the Caribbean- Atlantic (7.7%).

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Squat lobsters (Crustacea: Decapoda: Galatheoidea and Chirostyloidea) collected during the TALUD XIV cruise in the Gulf of California, Mexico, and rediscovery of Gastroptychus perarmatus (Haig, 1968) in the eastern Pacific

Zootaxa ◽

10.11646/zootaxa.3418.1.2 ◽

2012 ◽

Vol 3418 (1) ◽

pp. 28 ◽

Cited By ~ 2

Author(s):

MICHEL E. HENDRICKX

Keyword(s):

Gulf Of California ◽

California Current ◽

First Record ◽

Eastern Pacific ◽

Tropical Eastern Pacific ◽

Squat Lobster ◽

Distribution Limit ◽

Water Species ◽

Squat Lobsters

Seven species of squat lobsters were collected during the TALUD XIV cruise in the Gulf of California, Mexico. Gastrop-tychus perarmatus (Haig, 1968) was collected for the second time since it was described and represents a first record ofthe genus in the tropical eastern Pacific. Its association with gorgonians is also noted from color pictures taken during adeep-water dive in another cruise in the area. Janetogalathea californiensis (Benedict, 1902) was captured in four sam-pling stations, in the same area where it has been previously reported. Three species of Munida Leach, 1820 were collected(M. bapensis Hendrickx, 2000, M. mexicana Benedict, 1902, and M. tenella Benedict, 1902). Records of M. bapensis ofthis cruise combined with additional captures of this species in 2007 in the same area indicate that it is the most abundantdeep-water species of squat lobster in the northern part of the central Gulf of California. Among the species of Munida,M. tenella was second in abundance and included specimens much larger than previously known. The single record forM. mexicana fits within the currently known depth and geographical ranges. Only one species of Munidopsis Whiteaves,1874 (M. depressa Faxon, 1892) was collected, in one of the deeper sampling stations visited during the cruise and itsnorthernmost distribution limit within the Gulf of California is increased by ca two degrees of latitude. The seventh speciescollected during this survey, Pleuroncodes planipes Stimpson, 1860, is a common inhabitant of the California Current and the Gulf of California.

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Checklist of conspicuous reef fishes of the Bahía de los Ángeles region, Baja California Norte, Mexico, with comments on abundance and ecological biogeography

Zootaxa ◽

10.11646/zootaxa.2922.1.7 ◽

2011 ◽

Vol 2922 (1) ◽

Author(s):

ISMAEL MASCAREÑAS-OSORIO ◽

BRAD ERISMAN ◽

JERRY MOXLEY ◽

EDUARDO BALART ◽

OCTAVIO ABURTO-OROPEZA

Keyword(s):

Los Angeles ◽

Species Composition ◽

Relative Abundance ◽

Gulf Of California ◽

Baja California ◽

Reef Fishes ◽

Eastern Pacific ◽

Frequency Of Occurrence ◽

Tropical Eastern Pacific ◽

Geographic Distributions

A first checklist of conspicuous reef fishes observed at 15 sites in the vicinity of Bahía de los Ángeles from 2008 to 2010 is presented. A total of 70 species representing 31 families were observed. Species composition was similar to well studied regions in the southern Gulf of California, in that most species had distributions that span the Tropical Eastern Pacific but species endemic to Mexico or the Gulf of California ranked highest in relative abundance, frequency of occurrence, and mean density. Several species with temperate geographic distributions were more abundant and frequent than on reefs in the southern Gulf. Large-bodied, predatory species such as sharks and the Gulf Grouper, Mycteroperca jordani, were rare or absent.

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List of coastal fishes of Islas Marías archipelago, Mexico, with comments on taxonomic composition, biogeography, and abundance

Zootaxa ◽

10.11646/zootaxa.2985.1.2 ◽

2011 ◽

Vol 2985 (1) ◽

pp. 26 ◽

Cited By ~ 14

Author(s):

BRAD E. ERISMAN ◽

GRANTLY R. GALLAND ◽

ISMAEL MASCAREÑAS ◽

JERRY MOXLEY ◽

H. J. WALKER ◽

...

Keyword(s):

Fish Species ◽

Gulf Of California ◽

Significant Proportion ◽

Taxonomic Composition ◽

Eastern Pacific ◽

Museum Collections ◽

Tropical Eastern Pacific ◽

Coastal Fish ◽

Northeast Pacific ◽

The Pacific

The first comprehensive list of 318 coastal fish species recorded from the Islas Marías Archipelago, Mexico, was compiled from recent fieldwork, archival museum collections, and literature references. The jacks (Carangidae, 18 species) and the labrisomid blennies (Labrisomidae, 16) were the most speciose families. Most recorded species occur throughout the tropical eastern Pacific (160 species), while a significant proportion have wider ranges in the eastern Pacific (39), eastern Pacific and Indo-Pacific (39), eastern Pacific and Atlantic (3), or are circumtropical (39) in distribution. Three species occur in the Northeast Pacific, twenty-five are endemic to the Pacific coasts of Mexico, five are endemic to the Gulf of California, and three are endemic to Islas Marías. Cephalopholis panamensis (Epinephelidae), Epinephelus labriformis (Epinephelidae), Mulloidichthys dentatus (Mullidae), Stegastes flavilatus (Pomacentridae), Acanthurus xanthopterus (Acanthuridae), Pseudobalistes naufragium (Tetraodontidae), and Sufflamen verres (Tetraodontidae) were the dominant conspicuous species observed during underwater surveys in 2010. The absence or low abundance of commercially valuable shark, ray, and grouper species throughout the archipelago is discussed.

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