A new species of whiptail stingray of the genus Dasyatis Rafinesque, 1810 from the Southwestern Atlantic Ocean (Chondrichthyes: Myliobatiformes: Dasyatidae)

Zootaxa ◽  
2004 ◽  
Vol 492 (1) ◽  
pp. 1 ◽  
Author(s):  
HUGO R.S. SANTOS ◽  
ULISSES L. GOMES ◽  
PATRÍCIA CHARVET-ALMEIDA
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Southwestern Atlantic ◽  
Pectoral Fins ◽  
Disc Width ◽  
Random Arrangement ◽  
Southwestern Atlantic Ocean ◽  
The World ◽  
Shoulder Region ◽  
A New Species

The new species is compared both with other Dasyatis species of the southwestern Atlantic and with similarly shaped species of Dasyatis from other areas of the world. The holotype was collected in Maraj Bay; near Colares Island, district of Colares, Bel m, Par State, Brazil. It differs from known Dasyatis species by the combination of the following characters: a diamond-shaped (rhomboid) disc; an elongate snout (preorbital distance ranges from 35.7 to 37.7 % in disc width); a dark, well defined band or dark blotches outlining the lower lips; a row of small tubercles along midline of disc from shoulder region to base of tail, presenting a widespread and random arrangement; posterior margins of pectoral fins uniformly rounded; triangular-shaped pelvic fins with posterior margin almost straight or slightly sinuous and tips exceeding the limits of the posterior margin of disc; dorsal caudal keel absent in the holotype, but vestigial in both paratypes.

A new species of Ceradocus Costa, 1853 (Senticaudata: Maeridae) from Ceará State, Northeastern Brazil

Zootaxa ◽  
2019 ◽  
Vol 4555 (1) ◽  
pp. 127
Author(s):  
JESSIKA ALVES ◽  
RODRIGO JOHNSSON ◽  
ANDRÉ R. SENNA
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Northeastern Brazil ◽  
Taxonomic Key ◽  
The World ◽  
A New Species

A new species of the genus Ceradocus Costa, 1853 is described from Northeastern Brazil. This species is unique in having: (1) male gnathopod 2 propodus palm ornamented, palmar corner defined by a soft spine; (2) spines along the entire posterior margin of epimeral plate 3, (3) telson with very long apical setae. This new species is the second species of this genus in Brazil. An updated taxonomic key to the Ceradocus of the world is also provided. 

A new species of Pseudione Kossmann, 1881 (Isopoda, Cymothoida, Bopyridae) parasitizing the lobster Nephropsis aculeata Smith, 1881 (Decapoda, Astacidea, Nephropidae) in the Southwestern Atlantic

Zootaxa ◽  
2018 ◽  
Vol 4461 (2) ◽  
pp. 245 ◽  
Author(s):  
AMANDA PORCIUNCULA HORCH ◽  
AUGUSTO FREDERICO HUBER ◽  
PAULA BEATRIZ ARAUJO ◽  
FELIPE BEZERRA RIBEIRO
Keyword(s):  
New Species ◽  
Southwestern Atlantic ◽  
The World ◽  
Fourth Species ◽  
A New Species

A new species of Pseudione Kossmann, 1881 is described from two parasitized specimens of the clawed lobster Nephropsis aculeata Smith, 1881, collected from Brazilian waters in the southwestern Atlantic. It is the second species of the genus from Brazil and is the fourth species parasitizing nephropid lobsters in the world. 

Amaryllididae and Lysianassidae (Amphipoda: Lysianassoidea) from off the central coast of Brazil (11oS-22oS), with descriptions of three new species

Zootaxa ◽  
2008 ◽  
Vol 1718 (1) ◽  
pp. 45 ◽  
Author(s):  
ANDRÉ R. SENNA ◽  
CRISTIANA S. SEREJO
Keyword(s):  
New Species ◽  
Sexual Dimorphism ◽  
Atlantic Ocean ◽  
Brazilian Coast ◽  
Southwestern Atlantic ◽  
Central Coast ◽  
Southwestern Atlantic Ocean ◽  
Three New Species ◽  
Brazilian Province ◽  
A New Species

Material collected on the central Brazilian coast from the REVIZEE Benthos Program was analyzed and three new species were herein described. Knowledge about sexual dimorphism on Bonassa is improved. The hypothesis of endemism of the genus Amaryllis to Australia is contested with the discovery of a new species of Amaryllis in the Southwestern Atlantic Ocean. A new species of Lysianassa is described, and its differences to L. brasiliensis are commented too. Lysianopsis concavus Senna, 2007 is herein described with more details in description and figures. The distributions of the described species are given. Keys to identification of Brazilian Lysianassoidea families and Lysianassidae species are presented in this paper.Key-words: Amaryllis, Bonassa, Lysianassa, Lysianopsis, taxonomy, Brazilian province

scholarly journals Two new species of Hybotidae from Bolivia with keys to the world species of Megagrapha (Diptera)

2012 ◽  
pp. 28-30
Author(s):  
Gianni Raffone
Keyword(s):  
New Species ◽  
Posterior Margin ◽  
Neotropical Region ◽  
Occipital Region ◽  
World Species ◽  
The World ◽  
Two New Species ◽  
First Time ◽  
A New Species

Abstract - A new species of Megagrapha Melander, 1927 and a new species of Tachyempis Melander, 1927 are described. The genus Megagrapha is reported from the Neotropical region for the first time. Megagrapha boliviana n. sp. is related to M. pubescens (Loew,1862), from which it differs in having a yellow occipital region, a linear posterior margin along eye, in the shape of the flagellomere, 1 developed humeral seta, 2 notopleural setae, the different costal index of the wing, yellow first and second abdominal segments and other segments brown. Tachyempis bettellai n. sp. is related to T. gagatina Melander, 1927, from which it differs in having the wing entirely infuscate, yellow coxae, yellow fore and midlegs, hindleg with brown femur and apically brown tibia and the different costal index of the wing.Riassunto - Due nuove specie di ditteri Hybotidae della Bolivia con chiave delle specie mondiali di Megagrapha (Diptera). Vengono descritte una nuova specie di Megagrapha Melander, 1927 e una nuova specie di Tachyempis Melander, 1927 della Bolivia. Il genere Megagrapha è nuovo per la Regione Neotropicale. Megagrapha boliviana n. sp. differisce dall’affine M. pubescens (Loew, 1862) per l’area occipitale gialla, il margine posteriore dell’occhio lineare, la struttura del flagellomero, la presenza di una setola omerale, 2 setole notopleurali, il primo e secondo segmento addominale gialli e gli altri bruni e per il differente indice costale dell’ala; Tachyempis bettellai n. sp. differisce dall’affine T. gagatina Melander, 1927 per le ali uniformemente imbrunite, le anche gialle, le zampe anteriori e mediane interamente gialle, il femore posteriore bruno e la tibia posteriore con l’apice bruno, nonché per il differente indice costale dell’ala.

scholarly journals A new species of Cheiriphotis (Amphipoda, Corophiidae) from the southwestern Atlantic Ocean

Nauplius ◽  
2012 ◽  
Vol 20 (2) ◽  
pp. 107-116
Author(s):  
Jesser F. Souza-Filho ◽  
Ana Maria T. Souza ◽  
Maria Teresa Valério-Berardo
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
Southwestern Atlantic ◽  
Southwestern Atlantic Ocean ◽  
A New Species

Thandarum hernandezi, a new genus and new species of sea cucumber family Sclerodactylidae (Echinodermata: Holothuroidea: Dendrochirotida) from the Southwestern Atlantic Ocean

Zootaxa ◽  
2012 ◽  
Vol 3304 (1) ◽  
pp. 63 ◽  
Author(s):  
MARIANO I. MARTINEZ ◽  
MARTÍN I. BROGGER
Keyword(s):  
New Species ◽  
Sea Cucumber ◽  
Body Wall ◽  
New Genus ◽  
The Body ◽  
Southwestern Atlantic ◽  
Double Row ◽  
Southwestern Atlantic Ocean ◽  
A New Species ◽  
Tube Feet

A new genus and a new species of dendrochirotid, Thandarum hernandezi gen. et sp. nov., is described from Buenos Airescoast in the Southwestern Atlantic. For this species is quite significant the body U shape, up to 14.08 mm (along thetrivium), with double row of podia restricted to the ambulacra. Other features are ossicles from body wall with buttonsand 4 pillar tables, tube feet with rods and end plate star-shaped; the introvert with rosettes and tentacles with rods. Thesecharacteristics require the recognition of a new genus, and the new species and represents the first sclerodactylid reported in Argentinean waters.

A new species of Ligiarctus (Tardigrada, Arthrotardigrada) from the Brazilian continental shelf, Southwestern Atlantic Ocean

2017 ◽  
Vol 48 (1) ◽  
pp. 5-12 ◽  
Author(s):  
Edivaldo Gomes-Júnior ◽  
Érika Santos ◽  
Clélia M. C. da Rocha ◽  
Paulo J. P. Santos ◽  
Paulo Fontoura
Keyword(s):  
New Species ◽  
Atlantic Ocean ◽  
Continental Shelf ◽  
Southwestern Atlantic ◽  
Southwestern Atlantic Ocean ◽  
A New Species
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