scholarly journals Integrative taxonomy reveals hidden species within the western Atlantic Callichirus major s. l. (Decapoda, Axiidea, Callichiridae)

2020 ◽  
Author(s):  
Patricio Hernáez ◽  
Marcel S. Miranda ◽  
Juliana P. P. Rio ◽  
Marcelo A.A. Pinheiro
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
Species Complex ◽  
Integrative Taxonomy ◽  
Molecular Evidence ◽  
Tropical Eastern Pacific ◽  
Western Atlantic ◽  
Distributional Information ◽  
New Evidence ◽  
A New Species

AbstractThe ghost shrimp Callichirus major (Say, 1818) is widely distributed in the Atlantic Ocean from ∼23°N to ∼26°S, and has also been reported from the tropical eastern Pacific. Evidence has been accumulating over many years that C. major is actually a species complex. Yet, the name C. major is widely and frequently used in many kinds of research. The current lack of clarity in the use of the name C. major has resulted in nomenclatural instability, but also in unreliability and miscommunication of the available ecological and distributional information. Existing morphological and molecular evidence is reviewed and new evidence presented for the specimens from the southern localities previously assigned to C. major s. l. actually being a new species. That new species is herein described based on morphological and molecular evidence. Additionally, a neotype is selected for C. major in order to settle the defining characters of C. major s. str. and, therefore, ensuring the correct use of this name.

scholarly journals Revision of Bairdiella (Sciaenidae: Perciformes) from the western South Atlantic, with insights into its diversity and biogeography

2019 ◽  
Vol 17 (1) ◽  
Author(s):  
Alexandre Pires Marceniuk ◽  
Eduardo Garcia Molina ◽  
Rodrigo Antunes Caires ◽  
Matheus Marcos Rotundo ◽  
Wolmar Benjamin Wosiacki ◽  
...  
Keyword(s):  
New Species ◽  
Phylogenetic Relationships ◽  
Species Complex ◽  
Atlantic Coast ◽  
Geographic Range ◽  
Molecular Evidence ◽  
Western Atlantic ◽  
Taxonomic History ◽  
Inshore Waters ◽  
A New Species

ABSTRACT The sciaenid genus Bairdiella comprises a group of relatively small fishes found in inshore waters and estuaries of the western Atlantic and eastern Pacific. Despite recent analyses of the phylogenetic relationships of Bairdiella, there has been no comprehensive revision of the alpha taxonomy of the species of the genus. Bairdiella ronchus from the western Atlantic, has a complex taxonomic history, with four junior synonyms recognized. Based on morphological and molecular evidence, this study indicates that B. ronchus represents a species complex. The species is therefore redescribed and its geographic range is redefined. Bairdiella veraecrucis, which is currently recognized as a junior synonym of B. ronchus, is revalidated, and a new species of the genus is described from the Atlantic coast of Brazil. Finally, inferences are made on the diversity and biogeography of the B. ronchus species complex.

Integrative taxonomy of the species complex Haemulon steindachneri ( ) (Eupercaria; Haemulidae) with a description of a new species from the western Atlantic

Zoology ◽  
2020 ◽  
Vol 141 ◽  
pp. 125782 ◽  
Author(s):  
Cintia Oliveira Carvalho ◽  
Alexandre Pires Marceniuk ◽  
Claudio Oliveira ◽  
Wolmar Benjamin Wosiacki
Keyword(s):  
New Species ◽  
Species Complex ◽  
Integrative Taxonomy ◽  
Western Atlantic ◽  
A New Species

scholarly journals A new species of Acanthobothrium (Eucestoda: Onchobothriidae) in Aetobatus cf. narinari (Myliobatidae) from Campeche, México

2018 ◽  
Vol 27 (1) ◽  
pp. 66-73 ◽  
Author(s):  
Erick Rodríguez-Ibarra ◽  
Griselda Pulido-Flores ◽  
Juan Violante-González ◽  
Scott Monks
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
The State ◽  
Quintana Roo ◽  
Undescribed Species ◽  
Marine Waters ◽  
Western Atlantic ◽  
First Report ◽  
Spotted Eagle Ray ◽  
A New Species

Abstract The helminthological examination of nine individuals of Aetobatus cf. narinari (spotted eagle ray; raya pinta; arraia pintada) revealed the presence of an undescribed species of cestode of the genus Acanthobothrium. The stingrays were collected from four locations in México: Laguna Términos, south of Isla del Carmen and the marine waters north of Isla del Carmen and Champotón, in the State of Campeche, and Isla Holbox, State of Quintana Roo. The new species, nominated Acanthobothrium marquesi, is a category 3 species (i.e, the strobila is long, has more than 50 proglottids, the numerous testicles greater than 80, and has asymmetrically-lobed ovaries); at the present, the only category 3 species that has been reported in the Western Atlantic Ocean is Acanthobothrium tortum. Acanthobothrium marquesi n. sp. can be distinguished from A. tortum by length (26.1 cm vs. 10.6 cm), greater number of proglottids (1,549 vs. 656), a larger scolex (707 µm long by 872 µm wide vs. 699 µm long by 665 µm wide), larger bothridia (626 µm long by 274 µm wide vs. 563 µm long by 238 µm wide). This is the first report of a species of Acanthobothrium from the Mexican coast of the Gulf México.

scholarly journals A new species of the remarkable brittle star genus Astrophiura (Echinodermata: Ophiuroidea) from the western Atlantic Ocean

Zootaxa ◽  
2018 ◽  
Vol 4378 (2) ◽  
pp. 257 ◽  
Author(s):  
DAVID L. PAWSON
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
Gulf Of Mexico ◽  
Dorsal Surface ◽  
Western Atlantic ◽  
Disc Diameter ◽  
Southern Caribbean ◽  
Bright Orange ◽  
A New Species

Astrophiura caroleae, new species, is described from off Curacao in the southern Caribbean, and from the western Gulf of Mexico, in depths of 244 to 434 meters. This new species, the first in the genus Astrophiura to be described from the Atlantic Ocean, has a distinctive combination of characters, including regularly arranged primary plates, large radial shields whose radial edges are in contact for their entire visible length, and prominent tubercles on central and radial plates. The mottled reddish coloration of the dorsal surface of this species usually contrasts with the color of the substratum, rendering it readily visible in situ, despite its disc diameter of less than 10 mm. Like its congeners, A. caroleae is gonochoric, the gonads of females containing conspicuous masses of bright orange eggs that are approximately 165 µm in diameter. DNA Barcoding data are provided for this new species, these are the first for Astrophiura. 

scholarly journals A new species of the genus Centruroides Marx (Scorpiones, Buthidae) from western Michoacán State, México using molecular and morphological evidence

ZooKeys ◽  
2019 ◽  
Vol 859 ◽  
pp. 31-48
Author(s):  
Ana F. Quijano-Ravell ◽  
Luis F. de Armas ◽  
Oscar F. Francke ◽  
Javier Ponce-Saavedra
Keyword(s):  
New Species ◽  
Mitochondrial Gene ◽  
Morphological Characters ◽  
Integrative Taxonomy ◽  
Valid Species ◽  
Morphological Evidence ◽  
Molecular Evidence ◽  
Mountain Range ◽  
A New Species ◽  
Gene Mrna

A new species of scorpion belonging to the genus Centruroides Marx, 1890 is described from the Coalcomán mountain range, western Michoacán State, Mexico. Its general aspect resembles Centruroidesruana Quijano-Ravell & Ponce-Saavedra, 2016, and C.infamatus (C. L. Koch, 1844), but it is a smaller species having lower pectinal tooth counts; also, males of C.ruana have the pedipalp chelae slightly thicker, whereas C.infamatus has a subaculear tubercle nearer to the base of the aculeus. Another species with similar aspect is Centruroidesornatus Pocock, 1902; however, a preliminary molecular analysis of the mitochondrial gene mRNA 16S showed genetic divergence (measured as p-distance) near to 10% between these species, and lower differences between the new species with respect to C.infamatus (4.63%) and C.ruana (5.07%). The molecular evidence together with the morphological characters (integrative taxonomy) are sufficient for recognizing the Coalcomán population as a separate and valid species.

scholarly journals Integrative taxonomy of the Felimare californiensis and F. ghiselini species complex (Nudibranchia: Chromodorididae), with description of a new species from Peru

2018 ◽  
Vol 84 (3) ◽  
pp. 334-334
Author(s):  
Craig A Hoover ◽  
Vinicius Padula ◽  
Michael Schrödl ◽  
Yuri Hooker ◽  
Ángel Valdés
Keyword(s):  
New Species ◽  
Species Complex ◽  
Integrative Taxonomy ◽  
A New Species

A new species of Pachycheles (Crustacea: Anomura: Porcellanidae), with taxonomic remarks on two other porcelain crabs from the remote oceanic archipelago of Trindade and Martin Vaz, South Atlantic Ocean

Zootaxa ◽  
2017 ◽  
Vol 4299 (4) ◽  
pp. 546 ◽  
Author(s):  
LUCIANE AUGUSTO DE AZEVEDO FERREIRA ◽  
MARCOS TAVARES
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
Continental Shelf ◽  
Abdominal Segment ◽  
South Atlantic ◽  
South Atlantic Ocean ◽  
Western Atlantic ◽  
Porcelain Crabs ◽  
Inner Continental Shelf ◽  
A New Species

Three species in two genera of porcelain crabs are reported from the remote oceanic archipelago of Trindade and Martin Vaz one of which, Pachycheles meloi, new to science. The new species is morphologically similar to Pachycheles riisei (Stimpson, 1858) from the inner continental shelf between Florida (USA) and São Paulo (Brazil), of which Pachycheles meloi sp. nov. differs by a suite of carapace and appendage characters, including the presence of a pair of male gonopods on the second abdominal segment (absent in P. riisei). The new species is additionally compared to other congeners. Opportunity is taken to elaborate on the taxonomy of Petrolisthes amoenus (Guérin-Méneville, 1855) and Petrolisthes marginatus (Stimpson, 1859). The Trindade and Martin Vaz Archipelago contain a strongly depauperate porcellanid fauna of western Atlantic affinities. 

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