A new genus and three new species of alpheid shrimps (Crustacea, Decapoda, Caridea) from the tropical American coasts

Zootaxa ◽  
2010 ◽  
Vol 2652 (1) ◽  
pp. 47 ◽  
Author(s):  
ARTHUR ANKER
Keyword(s):  
New Species ◽  
New Genus ◽  
Pacific Coast ◽  
Type Specimen ◽  
Single Type ◽  
Additional Specimen ◽  
Bocas Del Toro ◽  
The Pacific ◽  
Southern Gulf Of Mexico ◽  
Three New Species

A new alpheid shrimp genus, Triacanthoneus n. gen., is established for three new species from shallow marine waters of Central and South America. Triacanthoneus toro n. sp., the type species of the new genus, is described based on four specimens from Bocas del Toro, Caribbean coast of Panama. Triacanthoneus pacificus n. sp. is described on the basis of a single type specimen from the Pacific coast of Panama and an additional specimen from Bahía Malaga, Pacific coast of Colombia. Finally, Triacanthoneus alacranes n. sp. is described based on a single specimen collected near Alacranes Reef, off Yucatán Peninsula in the southern Gulf of Mexico. Triacanthoneus shares many features with Salmoneus Holthuis, 1955, but can be easily distinguished by the presence of three very strong and sharp teeth on the carapace, one being in a mediodorsal position posterior to carapace mid-length, and two in a dorsolateral post-hepatic position. This carapace armature is unique within the family Alpheidae.

A revision of the genus Orchestia Leach, 1814 with the reinstatement of O. inaequalipes (K.H. Barnard, 1951), the designation of a neotype for Orchestia gammarellus (Pallas, 1776) and the description of three new species (Crustacea: Amphipoda: Talitridae: Talitrinae)

Zootaxa ◽  
2020 ◽  
Vol 4808 (2) ◽  
pp. 201-250
Author(s):  
ALAN A. MYERS ◽  
JAMES K. LOWRY
Keyword(s):  
New Species ◽  
North America ◽  
South America ◽  
Type Species ◽  
Pacific Coast ◽  
Species Group ◽  
Eastern North America ◽  
The Pacific ◽  
North Eastern ◽  
Three New Species

The amphipod genus Orchestia is revised. It now includes 10 species of which three are new: O. forchuensis sp. nov. from north-eastern North America and Iceland., O. perezi sp. nov. from Chile and O. tabladoi sp. nov. from Argentina. Orchestia inaequalipes (K.H. Barnard 1951) is reinstated. The type species of the genus, O. gammarellus is redescribed based on material from Fountainstown, Ireland and a neotype is established to stabilize the species. The species was originally described from a garden in Leiden, far from the sea. Its true identity is unknown and no type material exists. Orchestia gammarellus (Pallas, 1776) is shown to be a sibling species group with members in both hemispheres of the temperate Atlantic as well along the Pacific coast of South America. A hypothesis for the establishment of the current distribution of Orchestia species is presented that extends back to the Cretaceous. 

Taxonomic remarks on the alpheid shrimp genus Triacanthoneus Anker, 2010, with description of a second eastern Pacific species (Malacostraca: Decapoda)

Zootaxa ◽  
2020 ◽  
Vol 4772 (3) ◽  
pp. 450-468 ◽  
Author(s):  
ARTHUR ANKER
Keyword(s):  
Pacific Coast ◽  
Eastern Pacific ◽  
Single Specimen ◽  
Bocas Del Toro ◽  
The Pacific ◽  
Southern Gulf Of Mexico ◽  
New Material ◽  
First Time ◽  
Pacific Species ◽  
Alpheid Shrimp

The recently described alpheid genus Triacanthoneus Anker, 2010 is reassessed based on new material from the Pacific and Caribbean coasts of Panama, and the southern Gulf of Mexico. Salmoneus armatus Anker, 2010 is tentatively transferred to Triacanthoneus and the latter genus is redefined. A new eastern Pacific species of Triacanthoneus is described based on a single specimen collected by scuba diving off Coiba Island on the Pacific coast of Panama. Triacanthoneus blanca sp. nov. is closely related to its only eastern Pacific congener, T. pacificus Anker, 2010, which is reported for the first time from the Las Perlas Islands in the Gulf of Panama. Morphological variation in T. toro Anker, 2010 is discussed on the basis of new topotypical material from Bocas del Toro, Panama, and a single specimen tentatively reported as T. cf. toro from Sisal, Mexico. An identification key to the seven currently known species of Triacanthoneus, with updated distributional and ecological information, as well as high-resolution colour photographs of four species are also provided. 

Revision of Spinosphaera and establishment of the new genus Hutchingsiella (Polychaeta: Terebellidae: Terebellinae)

2003 ◽  
Vol 83 (4) ◽  
pp. 747-759 ◽  
Author(s):  
Mario H. Londoño-Mesa
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
Western Australia ◽  
New Genus ◽  
Caribbean Region ◽  
Caribbean Coast ◽  
The Pacific ◽  
Mexican Caribbean ◽  
The Pacific Ocean ◽  
Three New Species

Spinosphaera is a Terebellinae genus with three species described from the Pacific Ocean, S. pacifica from Japan, S. oculata from California, and the doubtful S. cowarrie from Western Australia. The genus is presently unknown in the Grand Caribbean region. Spinosphaera is characterized by the absence of branchiae, by the great number of notopodia, and the presence of a special type of notochaetae, called ‘Spinosphaera-chaeta’. These chaetae have three different regions: distal denticulate blade, neck separating the former from a middle swollen spinous region, and a proximal smooth or bilimbate region; two sizes are present. The genus is redefined, with redescription of all species currently known. Three new species are described here, two from the Mexican Caribbean coast, S. hutchingsae and S. carrerai, and one from California, S. harrisae. A taxonomic key to identify all species is given. Hutchingsiella gen. nov. is proposed for S. cowarrie; it differs from Spinosphaera in having notochaeta from segment 5 and neurochaetae from segment 6, and for lacking Spinosphaera chaeta.

A brackish diatom, Pseudofrustulia lancea gen. et sp. nov. (Bacillariophyceae), from the Pacific coast of Oregon (USA)

Phytotaxa ◽  
2016 ◽  
Vol 267 (2) ◽  
pp. 103 ◽  
Author(s):  
YUKI SAWAI ◽  
TAMOTSU NAGUMO ◽  
ALAN R. NELSON
Keyword(s):  
Electron Microscope ◽  
New Species ◽  
New Genus ◽  
Pacific Coast ◽  
Diagnostic Feature ◽  
Sem Images ◽  
The Pacific ◽  
A New Species

Light and electron microscope observations show that a brackish diatom taxon should be classified as a new species of a new genus; Pseudofrustulia lancea gen. et sp. nov. We propose separating Pseudofrustulia from other similar genera such as Frickea, Frustulia, Amphipleura, Muelleria, and Envekadea on the basis of its thickened axial ribs, raphe endings, axial costae, morphology of helictoglossa, size of striae on valve surfaces, and areolae on the inner side between its axial ribs and raphe. Girdle bands may be another diagnostic feature for the separation of Pseudofrustulia from related taxa, but more detailed observations using SEM images are required to determine if bands are diagnostic.

scholarly journals Terrestrial Isopoda (Crustacea, Oniscidea) from the coasts of Costa Rica, with descriptions of three new species

2018 ◽  
Vol 66 (1-1) ◽  
pp. 187 ◽  
Author(s):  
Stefano Taiti ◽  
Giuseppe Montesanto ◽  
José A. Vargas
Keyword(s):  
New Species ◽  
Costa Rica ◽  
Pacific Coast ◽  
Caribbean Sea ◽  
The Pacific ◽  
The Caribbean ◽  
Morphological Differences ◽  
Three New Species ◽  
Halophilic Species ◽  
Caribbean Populations

Abstract: Seven species of terrestrial isopods are recorded from the coasts of the Pacific and Caribbean sides of Costa Rica. Three species (Buchnerillo neotropicalis, Hawaiioscia nicoyaensis and Trichorhina biocellata) are described as new and two species (Tylos niveus and Armadilloniscus cf. caraibicus) are newly recorded from the country. The poorly known species T. niveus is also illustrated. At present the total number of terrestrial isopod species recorded from Costa Rica is 30. Interestingly four typical littoral halophilic species (Ligia baudiniana, Tylos wegeneri, T. niveus and A. cf. caraibicus) are present on both the Pacific coast of Costa Rica and on the coasts of the lands encompassed by the Caribbean Sea. With the sole exception of A. cf. caraibicus, no morphological differences could be detected from the Pacific and Caribbean populations of those species. Rev. Biol. Trop. 66(Suppl. 1): S187-S210. Epub 2018 April 01. 

scholarly journals Three New Lizard Species of the Liolaemus montanus Group from Perú

Diversity ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 161 ◽  
Author(s):  
César Aguilar-Puntriano ◽  
César Ramírez ◽  
Ernesto Castillo ◽  
Alejandro Mendoza ◽  
Victor J. Vargas ◽  
...  
Keyword(s):  
New Species ◽  
Pacific Coast ◽  
Head Shape ◽  
Lizard Species ◽  
Closely Related Species ◽  
The Pacific ◽  
Two New Species ◽  
Three New Species ◽  
Coloration Patterns ◽  
One New Species

Three new species of Liolaemus belonging to the L. montanus group are described from Perú. Two new species are restricted to the Ica and Moquegua departments on the Pacific coast, and one new species is only known from an isolated highland in Ayacucho department. These three new species differ from closely related species in their coloration patterns and head shape. We comment on the conservation issues of the new species and other Peruvian species of the L. montanus group.

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