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. 

The eastern Pacific species of Salmoneus Holthuis, 1955, with description of a remarkable new species from Las Perlas Archipelago, Panama  (Malacostraca: Decapoda: Alpheidae)

Zootaxa ◽  
2019 ◽  
Vol 4651 (1) ◽  
pp. 125-140 ◽  
Author(s):  
ARTHUR ANKER
Keyword(s):  
New Species ◽  
Pacific Coast ◽  
Eastern Pacific ◽  
Tropical Eastern Pacific ◽  
Type Specimens ◽  
Shark Teeth ◽  
The Pacific ◽  
First Time ◽  
Pacific Species ◽  
Alpheid Shrimp

The present study deals with five species of the alpheid shrimp genus Salmoneus Holthuis, 1955 from the tropical eastern Pacific. One of them is new to science and is described as Salmoneus tiburon sp. nov. The new species is presently known only from the Las Perlas Archipelago in Panama and can be distinguished from all other congeners by the dentition on the cutting edges of the major chela, with some dactylar teeth reminiscent of shark teeth. It is also one of the largest species of the genus, with the carapace length of both type specimens surpassing 8.0 mm. Salmoneus serratidigitus (Coutière, 1897), a species with an ample distribution across the Indo-Pacific, is recorded for the first time from the Pacific coast of Panama and is confirmed from Colombia. Salmoneus malagensis Anker & Lazarus, 2015, previously known only from Bahía Málaga in Colombia, is recorded from Panama’s Azuero Peninsula. The remaining two species, S. excavatus Anker, 2011 and S. alvarezi Anker & Lazarus, 2015, are recorded regionally from Las Perlas Archipelago in Panama and Playa Tarcoles in Costa Rica, both for the first time since their original descriptions. An identification key to the five currently known eastern Pacific species of Salmoneus is provided. However, several immature and/or incomplete specimens herein preliminarily reported as Salmoneus spp., as well photographic records from southern California, USA, indicate the presence of further undescribed species in the eastern Pacific. 

scholarly journals Three transisthmian snapping shrimps (Crustacea: Decapoda: Alpheidae: Alpheus) associated with innkeeper worms (Echiura: Thalassematidae)in Panama

Zootaxa ◽  
2007 ◽  
Vol 1626 (1) ◽  
pp. 1-23 ◽  
Author(s):  
ARTHUR ANKER ◽  
CARLA HURT ◽  
NANCY KNOWLTON
Keyword(s):  
Pacific Coast ◽  
Eastern Pacific ◽  
Divergence Times ◽  
Single Specimen ◽  
Western Atlantic ◽  
Bocas Del Toro ◽  
Shallow Subtidal ◽  
Snapping Shrimps ◽  
The Western Pacific ◽  
Pacific Species

The present study deals with three species of Alpheus, including two new species, living symbiotically in burrows of innkeeper worms (Echiura: Thalassematidae) on the tropical coasts of the western Atlantic and eastern Pacific Oceans. Alpheus christofferseni n. sp. is described on the basis of four specimens from Atol das Rocas, northwestern Brazil, and one specimen from Bocas del Toro, Caribbean coast of Panama. All specimens of this species were collected with suction pumps from burrows on intertidal or shallow subtidal sandflats; the Panamanian specimen was collected together with its echiuran host, Ochetostoma cf. edax (Fisher, 1946). Alpheus naos n. sp. is described on the basis of a single specimen found together with its host, Listriolobus sp., under large intertidal mud-covered rocks of Punta Culebra, Isla Naos, Pacific coast of Panama. Finally, two specimens of Alpheus aequus Kim & Abele, 1988 were collected together with their hosts, Ochetostoma edax, in the mixed rock-sand-mud intertidal of Coiba, Pacific coast of Panama. Remarkably, these three species are nearly identical in morphology and are also similar in color patterns. However, despite their morphological and ecological similarities, they are among the most genetically distinct of transisthmian alpheid geminate taxa examined to date. Genetic analyses suggest that A. aequus and A. naos n. sp. form an eastern Pacific clade whose sister taxon is the slightly more distantly related western Atlantic A. christofferseni n. sp. Estimated divergence times are ~10 mya for the two eastern Pacific species, and ~11–12 mya for the western Atlantic and eastern Pacific clades. Within Alpheus, A. christofferseni n. sp., A. aequus and A. naos n. sp. belong to the pantropical A. barbatus Coutière, 1897 species complex (A. barbatus clade), which also includes the eastern Atlantic A. ribeiroae Anker & Dworschak, 2004 and the Indo-West Pacific A. barbatus. The association of all three American species with thalassematid echiurans, as well as previous reports of associations between A. barbatus and echiurans in the western Pacific, suggest that this symbiosis is relatively ancient, having evolved in the ancestor of the A. barbatus clade (at least 12 mya and probably earlier).

Records of mud shrimps (Crustacea: Decapoda: Axiidea and Gebiidae) from Pacific Mexico

2013 ◽  
Vol 94 (2) ◽  
pp. 369-388 ◽  
Author(s):  
Manuel Ayón-Parente ◽  
Michel E. Hendrickx ◽  
Eduardo Ríos-Jara ◽  
José Salgado-Barragán
Keyword(s):  
Pacific Coast ◽  
Eastern Pacific ◽  
Western Atlantic ◽  
Mexican Pacific ◽  
The Pacific ◽  
First Time

A total of 75 specimens belonging to four species of thalassinoids were collected in the intertidal and estuarine zones of two localities along the Pacific coast of Mexico.Callianassa tabogensisis recorded for the first time in Mexico, and is transferred to the genusNeotrypaea. Material ofCallichirusis assigned toCallichirus seilacheriwith some doubts due to taxonomic problems related to this genus in the eastern Pacific.Neocallichiruscf.grandimana, an amphi-American species described for the western Atlantic and previously reported in Ecuador and along the Pacific coast of Panama and Colombia, is reported for the first time in Mexico.Upogebia dawsoniis recorded for the second time from the coast of Jalisco. An updated list of Axiidea and Gebiidea known from the Mexican Pacific is provided, including 35 species.

A new species of the porcelain crab genus Petrolisthes from the Pacific coast of Panama, with taxonomic notes on closely related species (Decapoda: Anomura: Porcellanidae)

Zootaxa ◽  
2020 ◽  
Vol 4858 (4) ◽  
pp. 576-588
Author(s):  
LUCIANE AUGUSTO DE AZEVEDO FERREIRA ◽  
L. DANIEL SANTANA-MORENO ◽  
ARTHUR ANKER
Keyword(s):  
New Species ◽  
Pacific Coast ◽  
Eastern Pacific ◽  
Closely Related Species ◽  
The Pacific ◽  
Colour Patterns ◽  
Porcelain Crab ◽  
General Configuration ◽  
Pacific Species ◽  
A New Species

A new species of porcelain crab, Petrolisthes lazarus sp. nov., is described from the Pacific coast of Panama, based on two female specimens. The new species is morphologically most similar to another eastern Pacific species, P. crenulatus Lockington, 1878, especially in the general configuration of the carapace, chelipeds and ambulatory legs. However, P. lazarus sp. nov. can be separated from P. crenulatus by the differences in the proportions of the carapace, the shape of the frontal region of the carapace, and the setation pattern of the cheliped. In addition, P. lazarus sp. nov. and P. crenulatus appear to be allopatric, the latter species presently being known only from Mexico. Among other eastern Pacific taxa, P. lazarus sp. nov. may have some affinities with P. ortmanni Nobili, 1901 and P. lewisi (Glassell, 1936), from which it can be easily distinguished by the chelipeds lacking a dense field of setae on the outer (lateral) surface of the palm and with different proportions of some articles, especially the carpus. The four species can also be distinguished from each other by their diagnostic, although somewhat variable colour patterns. 

Strianassa lerayi gen. et sp. nov., a new laomediid mud-shrimp from the eastern Pacific, with new records of Axianassa ngochoae Anker, 2010 and Heteroaxianassa heardi (Anker, 2011) in the western Pacific (Malacostraca: Decapoda: Gebiidea)

Zootaxa ◽  
2020 ◽  
Vol 4820 (3) ◽  
pp. 523-539
Author(s):  
ARTHUR ANKER
Keyword(s):  
New Records ◽  
New Caledonia ◽  
Dorsal Surface ◽  
Eastern Pacific ◽  
Single Specimen ◽  
Shallow Subtidal ◽  
Mud Shrimp ◽  
First Time ◽  
The Western Pacific ◽  
Pacific Species

A new laomediid genus, Strianassa gen. nov., is established to accommodate a new eastern Pacific species of mud-shrimp, Strianassa lerayi sp. nov. The holotype and single specimen of the new species was collected on a shallow subtidal flat at Isla Afuerita, Canales de Afuera, Coiba Archipelago, Panama. Strianassa gen. nov. appears to be most closely related to Axianassa Schmitt, 1924 and Heteroaxianassa Sakai, 2016, differing from both of them by the dorsal surface of the rostrum armed with teeth; the third maxilliped with an exopod and a set of setobranchs; and the epipodal complex of the fourth pereiopod including a small podobranch. In addition, Axianassa ngochoae Anker, 2010 and Heteroaxianassa heardi (Anker, 2011) are recorded for the first time from New Caledonia and Papua New Guinea, respectively, representing minor extensions of their previously known distributional ranges. The validity of Heteroaxianassa is discussed.

New records of lampriform fishes (Teleostei: Lampriformes) from the Pacific coast of lower Central America, with comments on the diversity, taxonomy and distribution of the Lampriformes in the eastern Pacific Ocean

Zootaxa ◽  
2017 ◽  
Vol 4236 (3) ◽  
pp. 573 ◽  
Author(s):  
ARTURO ANGULO ◽  
MYRNA I. LÓPEZ-SÁNCHEZ
Keyword(s):  
Central America ◽  
Pacific Coast ◽  
New Records ◽  
Eastern Pacific ◽  
Museum Specimens ◽  
Eastern Pacific Ocean ◽  
The Pacific ◽  
Distributional Information ◽  
Pacific Species ◽  
Meristic Data

New records of occurrence for four species of lampriform fishes (Teleostei: Lampriformes; Desmodema polystictum, Regalecus russelii, Trachipterus fukuzakii and Zu cristatus) poorly known or previously unknown for the Pacific coast of lower Central America (Costa Rica-Panama) are herein reported. Museum specimens supporting such records are characterized and described. Comparative morphometric and meristic data on other collections and species of lampriforms, as well as distributional information, are provided and discussed. Diversity, taxonomy and distribution of the eastern Pacific species of the order also are briefly discussed. Finally, a key to the eastern Pacific species of the Lampriformes, based on our research and data available in the literature, is presented. 

Chrysopetalids (Phyllodocida: Chrysopetalidae) from the southern Mexican Pacific, including a new species

Zootaxa ◽  
2018 ◽  
Vol 4521 (1) ◽  
pp. 61 ◽  
Author(s):  
CHRISTOPHER CRUZ-GÓMEZ ◽  
J. ROLANDO BASTIDA-ZAVALA
Keyword(s):  
New Species ◽  
Pacific Coast ◽  
New Records ◽  
Eastern Pacific ◽  
Tropical Eastern Pacific ◽  
Mexican Pacific ◽  
The Pacific ◽  
The Family ◽  
First Time ◽  
A New Species

The family Chrysopetalidae has been poorly studied from the Pacific coast of Mexico compared to other families. Specifically from the southern Mexican Pacific, only two species of the family have been recorded in previous studies, Chrysopetalum occidentale and Paleanotus chrysolepis. In this study 311 specimens were revised, and nine species, belonging to six genera were found. Eight of these species are new records from the southern Mexican Pacific coast: Arichlidon watsonae n. sp., Bhawania cf. goodei, Chrysopetalum elegantoides, C. maculata, Hyalopale sp., Paleaequor psamathe, Paleanotus bellis and P. purpurea. A new species is also described, Arichlidon watsonae n. sp., which is characterized by the curved tips blades of the falcigers and their small and ovoid palps. Additionally, the genera Arichlidon and Hyalopale are recorded by first time from the Tropical Eastern Pacific. 

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.

scholarly journals Helminths of hawksbill turtle (Eretmochelys imbricata) from the Pacific coast of Costa Rica

2015 ◽  
Vol 52 (1) ◽  
pp. 67-70 ◽  
Author(s):  
M. Santoro ◽  
J. A. Morales ◽  
F. Bolaáos ◽  
G. Chaves ◽  
M. De Stefano
Keyword(s):  
Costa Rica ◽  
Pacific Coast ◽  
Eastern Pacific ◽  
Pathological Changes ◽  
Eretmochelys Imbricata ◽  
Parasitological Examination ◽  
The Pacific ◽  
Nodular Lesions ◽  
First Time ◽  
Necrotic Debris

Summary Parasitological examination of a stranded hawksbill turtle (Eretmochelys imbricata) from Pacific coast of Costa Rica revealed the presence of a rich digenean fauna including Carettacola stunkardi (Spirorchiidae), Enodiotrema reductum (Plagiorchiidae), Cricocephalus albus, Adenogaster serialis, Epi-bathra crassa, Pleurogonius lobatus, P. trigonocephalus, P. linearis, and Pyelosomum posterorchis (Pronocephalidae). All helminths except C. albus and P. lobatus represent new geographical records for Costa Rica. Carettacola stunkardi is reported for first time in an Eastern Pacific hawksbill turtle and its pathological changes are here described. Histologically, nodular lesions on the serosal surface of intestine revealed a mixed infiltrate of heterophils, lymphocytes, and histiocytes within necrotic debris. Granulomas with spirorchiid eggs were observed in the mucosa, sub-mucosa and muscular layers of stomach and intestine, gallbladder and liver.

Taxonomy of Centropomus Lacépède, 1802 (Perciformes: Centropomidae), with focus on the Atlantic species of the genus

Zootaxa ◽  
2021 ◽  
Vol 4942 (3) ◽  
pp. 301-338
Author(s):  
JESSÉ MIRANDA DE FIGUEIREDO-FILHO ◽  
ALEXANDRE P. MARCENIUK ◽  
ANDERSON FEIJÓ ◽  
RAQUEL SICCHA-RAMIREZ ◽  
GIOVANA S. RIBEIRO ◽  
...  
Keyword(s):  
Geometric Morphometrics ◽  
Pacific Coast ◽  
Atlantic Coast ◽  
Lateral View ◽  
Cytochrome C Oxidase I ◽  
Linear Measurements ◽  
Molecular Analyses ◽  
Needed Information ◽  
The Pacific ◽  
Pacific Species

Centropomus Lacépède, 1802 comprises 13 species of the fishes popularly knows as snooks, distributed in both Atlantic and Pacific coasts of America. Despite several studies on the group, conflicting taxonomic classifications still exist, including overlapping diagnostic characters, rendering species diagnoses extremely difficult. Herein, we review the taxonomy of Centropomus to elucidate species identities, redefine their diagnoses and to assess interspecific relationships based on the examination of 376 specimens. The study included complementary approaches, as analyses of external morphologic characters, linear and geometric morphometrics, and molecular analyses. Forty-nine characters were used for external morphology, 17 discrete plus 32 linear measurements. Shape and size were analyzed through geometric morphometrics of 185 specimens in lateral view. Partial sequences of the gene cytochrome c oxidase I were obtained for 129 specimens representing 11 species. Based on the consistent results retrieved from the morphologic and molecular analyses, we recognized six species of Centropomus from the Atlantic coast (C. ensiferus, C. irae, C. parallelus, C. pectinatus, C. poeyi and C. undecimalis). Centropomus mexicanus is treated as a junior synonym of C. parallelus. Six species from the Pacific coast are also tentatively recognized (C. armatus, C. medius, C. nigrescens, C. robalito, C. unionensis, and C. viridis), however further studies on the Pacific species are still needed. Information on type material, diagnosis, distribution, and taxonomic comments are provided for each species. An identification key to the species of Centropomus is presented. 

Sign in / Sign up

Export Citation Format

Share Document