scholarly journals Paleoecological and paleobiogeographical significance of the rudist Macgillavryia chubbii sp. n. in the Campanian of Oman

GeoArabia ◽  
2003 ◽  
Vol 8 (1) ◽  
pp. 129-146
Author(s):  
Jean M. Philip
Keyword(s):  
New Species ◽  
Sea Water ◽  
Potential Candidate ◽  
Pacific Region ◽  
Left Valve ◽  
The Pacific ◽  
The Caribbean ◽  
The Right ◽  
First Time ◽  
A New Species

ABSTRACT Excellently preserved specimens of the large rudist Macgillavryia have been described for the first time from the Campanian Samhan Formation in the vicinity of Filim and Hayy on the eastern side of the Haushi-Huqf massif in Oman. A new species, M. chubbii, was named and found to be equivalent to other species of Macgillavryia from the Caribbean domain. The exceptionally well-preserved holotype with its articulated valves allowed the reconstruction of the functional morphology of the mantle. The indications are that the left valve of M. chubbii covered only a small part of the commissural area, leaving a large part of the mantle of the right valve directly exposed to sea water and sunlight. As a result, M. chubbii has been proposed as a potential candidate for an association with zooxanthellae. Macgillavryia is a typical epifaunal rudist that probably lived in very shallow, clear seas. The shell was not buried during its lifetime but was exposed to epibionts and bioeroders. The excellent exposures allowed the reconstruction of relationships between Macgillavryia and other biotic or abiotic components. They formed a densely packed association with spaces filled by a very coarse bioclastic material. The superpositioning of two or more layers with superstratal growth fabrics created individual rudist banks more than 1 m thick covering several hundred square meters. Paleobiogeographic reconstructions have connected M. chubbii in Arabia with Macgillavryia in the Caribbean by eastward dispersion through the Pacific region.

Two new species and key to the salina group of the genus Rhagovelia Mayr, 1865 (Hemiptera: Heteroptera: Veliidae) from Colombia

Zootaxa ◽  
2018 ◽  
Vol 4457 (2) ◽  
pp. 305
Author(s):  
FREDY MOLANO ◽  
IRINA MORALES ◽  
FELIPE FERRAZ FIGUEIREDO MOREIRA
Keyword(s):  
New Species ◽  
Body Length ◽  
Caribbean Region ◽  
Pacific Region ◽  
The Pacific ◽  
Two New Species ◽  
Fore Femur ◽  
The Caribbean ◽  
First Time

Two new species of the salina group of the genus Rhagovelia Mayr, 1865 (Veliidae) from Colombia are described, illustrated, and included in an updated key. Rhagovelia nuqui sp. nov. is described from the Pacific Region of Colombia and Rhagovelia tintipan sp. nov., is described from the Caribbean Region of the country. The new species are diagnosed by body length and conditions of the male hind femoral spines, paramere shape, and antenna and fore femur color. Additionally, R. colombiana (Polhemus & Manzano, 1992) is redescribed and its range is extended to Chocó departament. Finally, R. plumbea Uhler, 1894 is recorded for the first time from Colombia.

scholarly journals The caridean shrimps of the genus Lysmata Risso, 1816 (Decapoda: Lysmatidae) from Madagascar collected during the Atimo-Vatae expedition: a new species and two new records

2021 ◽  
Vol 774 ◽  
pp. 155-177
Author(s):  
Hossein Ashrafi ◽  
J. Antonio Baeza ◽  
Zdeněk Ďuriš
Keyword(s):  
New Species ◽  
New Records ◽  
Original Description ◽  
Western Atlantic ◽  
West Pacific ◽  
Phylogenetic Studies ◽  
The Caribbean ◽  
De Man ◽  
First Time ◽  
A New Species

The present study focuses on shrimps belonging to the genus Lysmata Risso, 1816, collected from Madagascar during the Atimo Vatae expedition carried out in 2010. Lysmata malagasy sp. nov. is a new species belonging to the clade named “long accessory ramous” or “cosmopolitan” in previous phylogenetic studies. The new species can be distinguished from the only two other representatives of this group in the Indo-west Pacific, L. ternatensis De Man, 1902, and L. trisetacea (Heller, 1861), by the accessory ramus of the lateral antennular flagellum consisting of four elongated articles. Lysmata lipkei Okuno & Fiedler, 2010 is reported here from Madagascar with a remarkable extension of its known range after its original description from Japan. This species has also been reported from Singapore and, as alien species, from Brazil. Lastly, L. kuekenthali De Man, 1902 known from numerous localities in the Indo-West Pacific biogeographic area, is reported for the first time from Madagascar. Results of the present morphological and molecular analyses suggest that L. hochi Baeza & Anker, 2008 from the Caribbean Sea is a synonym of the Indo-West Pacific L. kuekenthali, and thus the latter species is alien in the western Atlantic.

Speocarcinus berglundi n. sp. (Decapoda: Brachyura), a new crab from the Imperial Formation (late Miocene-late Pliocene) of southern California

1994 ◽  
Vol 68 (4) ◽  
pp. 800-807 ◽  
Author(s):  
Annette B. Tucker ◽  
Rodney M. Feldmann ◽  
Charles L. Powell
Keyword(s):  
New Species ◽  
Late Miocene ◽  
Southern California ◽  
Late Pliocene ◽  
Riverside County ◽  
Isthmus Of Panama ◽  
The Pacific ◽  
Extant Species ◽  
The Caribbean ◽  
A New Species

Speocarcinus berglundi n. sp. is described from the Imperial Formation in Riverside County, California. Although the Imperial Formation spans late Miocene through late Pliocene time, the part of the unit that bears crabs has been radiometrically dated as late Miocene. The identification of a new species was based upon comparison with four extant species and represents the first documented fossil occurrence for the genus. The occurrence of this new species suggests that the genus may have originated in the Pacific and, during the Miocene, dispersed through the Isthmus of Panama to the Caribbean. Two of the specimens exhibit parasitism by Bopyridae (Isopoda).

A review of the genus Actenoncus Chaudoir (Coleoptera: Caraboidea: Orthogoniini)

Zootaxa ◽  
2009 ◽  
Vol 2135 (1) ◽  
pp. 57-64 ◽  
Author(s):  
MING-YI TIAN ◽  
THIERRY DEUVE
Keyword(s):  
New Species ◽  
Diagnostic Character ◽  
New Combination ◽  
The Right ◽  
First Time ◽  
A New Species

In the present paper the Oriental carabid genus Actenoncus Chaudoir, 1871 is redefined and reviewed for the first time. The absence of a median tooth on the right mandible is no longer considered a diagnostic character of this genus. Orthogonius foersteri Andrewes, 1931 is transferred into Actenoncus (new combination) and a new species is described from Indonesia, A. wallacei, new species. A key to all known species of Actenoncus is also provided.

A new species ofTriptolemma(Porifera: Pachastrellidae) from the Pacific Ocean with a revision of the genus

2010 ◽  
Vol 91 (2) ◽  
pp. 329-338 ◽  
Author(s):  
Marco Bertolino ◽  
D. Pica ◽  
G. Bavestrello ◽  
N. Iwasaki ◽  
B. Calcinai
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
Chemical Dissolution ◽  
Typical Pattern ◽  
Etching Mechanism ◽  
The Pacific ◽  
The Pacific Ocean ◽  
First Time ◽  
A New Species ◽  
Thick Crust

A new species,T. strongylatasp. nov. is described on the basis of material collected from the Pacific Ocean. The new species is characterized by the presence of sinuous strongyles. Moreover the incomplete description ofT. simplex(Sarà, 1959) is implemented on the basis of new abundant material allowing, for the first time, the complete description of the skeleton of aTriptolemmaspecies and the detecting of the presence of monaxonic spicules in the spicular complement of the genus. The skeleton is composed of a thick crust of disorderly arranged mesotriaenes and scattered microscleres, supported by diverging spicule tracts formed by oxeas towards the surface. Both species were recorded associated to boring sponges(SpiroxyaandCliona)in excavations of the calcareous scleraxis of precious corals or in organogenic concretions. In the cavities where the tissue ofTriptolemmawas recorded the wall of the excavation partially lost its typical pattern characterized by ovoid scars and became irregularly eroded. Our hypothesis is thatTriptolemmainsinuates inside the erosions produced by other sponges and it is able to enlarge them by an etching mechanism based on chemical dissolution only.

Description of a new species of Pagurus Fabricius, 1775 (Crustacea: Paguroidea: Paguridae) from the Pacific coast of Costa Rica, Central America, with notes on Pagurus albus (Benedict, 1892)

Zootaxa ◽  
2019 ◽  
Vol 4712 (1) ◽  
pp. 101-113
Author(s):  
MANUEL AYÓN-PARENTE ◽  
INGO S. WEHRTMANN
Keyword(s):  
New Species ◽  
Costa Rica ◽  
Central America ◽  
Pacific Coast ◽  
Antennal Segment ◽  
Distal Margin ◽  
Eastern Tropical Pacific ◽  
The Pacific ◽  
The Right ◽  
A New Species

A redescription of Pagurus albus (Benedict, 1892) is presented together with a description of a new species of hermit crab, Pagurus pseudoalbus sp. n., from the Pacific coast of Costa Rica. Pagurus pseudoalbus sp. n. differs from P. albus and P. perlatus by the length of antennal acicles, which do not exceed the distal margin of the 4th antennal segment, whereas in the latter two species, the antennal acicles exceed the 4th antennal segment; the antennular peduncle is proportionally longer than the ocular peduncle in the new species compared to P. perlatus, but shorter than in P. albus; the palm of the right cheliped in P. pseudoalbus sp. n. is 1.3 times as long as broad, while in P. albus and P. perlatus it is 1.0 and 1.4 times as long as broad, respectively. Including the new species, the genus Pagurus in the Eastern Tropical Pacific currently includes 16 species. 

Pectis loiolae (Asteraceae: Tageteae): New Species Registered in a Natural Monument at an Archaeological Site in Northeast Brazil

2021 ◽  
Vol 46 (2) ◽  
pp. 486-492
Author(s):  
Natanael Costa Rebouças ◽  
Valéria da Silva Sampaio ◽  
Mariana de Oliveira Bünger ◽  
Nádia Roque
Keyword(s):  
New Species ◽  
Pacific Islands ◽  
Conservation Status ◽  
Archaeological Site ◽  
Morphological Description ◽  
White Disk ◽  
The Pacific ◽  
The Caribbean ◽  
Natural Monument ◽  
A New Species

Abstract— Pectis comprises about 90 species distributed in North America, Mexico, the Caribbean, South and Central America, and the Pacific Islands. In Brazil, the genus is represented by 14 species that mainly occur in the Cerrado and five species that are endemic to the Caatinga domain. During field expeditions to the Lajedo de Soledade archaeological site, in the state of Rio Grande do Norte, Brazil, a new species of Pectis was found on rocky outcrops (lajedos) in the Caatinga. Pectis loiolae sp. nov. grows on limestone rocks in sedimentary substrate and is recognized by its prostrate habit with ascending branches terminating in a solitary capitulum, apex of the involucral bracts rounded, apiculate, and green becoming vinaceous in the apical 1/3, corolla of ray flowers (5) with abaxial surface vinaceous and adaxial white, disk flowers 8‐10, and presence of stylopodium in the disk flowers. A morphological description, illustration, distribution map, habitat, conservation status, and a key for all Brazilian Pectis species are presented herein.

The jumping lynx spider Oxyopes salticus Hentz, 1845 and its Neotropical relatives (Araneae: Oxyopidae)

Zootaxa ◽  
2017 ◽  
Vol 4216 (5) ◽  
pp. 457
Author(s):  
ADALBERTO J. SANTOS
Keyword(s):  
New Species ◽  
South America ◽  
Dominican Republic ◽  
Related Species ◽  
Colour Pattern ◽  
The World ◽  
Extreme Variation ◽  
The Caribbean ◽  
First Time ◽  
A New Species

The spider genus Oxyopes Latreille occurs throughout the world, but is insufficiently known in South America and the Caribbean. In this study, three apparently related species of this genus are reported from the region. Oxyopes salticus Hentz, 1845 is redescribed and illustrated, and extreme variation in colour pattern and in female genitalia is reported within this species. Oxyopes m-fasciatus Piza, 1938 and Oxyopes nigrolineatus Mello-Leitão, 1941 are both considered junior synonyms of O. salticus. The material examined in this study, together with information from the literature, show this species is widely distributed throughout the continental Americas and the Caribbean. Oxyopes crewi Bryant, 1948 is redescribed and illustrated, and its geographic distribution is extended to Bahamas, Cuba, Dominican Republic, Jamaica, and Saint Kitts. A new species, Oxyopes incantatus sp. nov., is described and illustrated for the first time based on specimens from the Galápagos Islands. 

A New Species of Acantholiparis (Pisces: Liparidae) from the Eastern Subarctic Pacific Region, with Distribution Notes for the Genus

1969 ◽  
Vol 26 (5) ◽  
pp. 1237-1242 ◽  
Author(s):  
Richard B. Grinols
Keyword(s):  
New Species ◽  
Pacific Region ◽  
Oregon Coast ◽  
Subarctic Pacific ◽  
First Time ◽  
A New Species

Acantholiparis caecus is described for the first time and reported to occur off the northern Oregon coast. The range of its congener, A. opercularis, is extended south off Newport, Oregon.

The alpheid shrimp genus Leslibetaeus Anker, Poddoubtchenko & Wehrtmann, 2006 in the Western Atlantic, with description of a new species from Tobago (Crustacea, Decapoda)

Zootaxa ◽  
2011 ◽  
Vol 2734 (1) ◽  
pp. 63 ◽  
Author(s):  
ARTHUR ANKER
Keyword(s):  
New Species ◽  
Original Description ◽  
Morphological Characters ◽  
Generic Diagnosis ◽  
Single Female ◽  
Western Atlantic ◽  
The Pacific ◽  
First Time ◽  
A New Species ◽  
Alpheid Shrimp

A miniature alpheid shrimp, Leslibetaeus caribbaeus n. sp., is described on the basis of a single female specimen collected in Sandy Bay, Tobago, in 1992. The new species is closely related to L. coibita Anker, Poddoubtchenko & Wehrtmann, 2006 from the Pacific coast of Panama, the type species and the only other known species of Leslibetaeus Anker, Poddoubtchenko & Wehrtmann, 2006, differing from it in several morphological characters. With the discovery of L. caribbaeus n. sp., Leslibetaeus becomes a genus with transisthmian (= amphi-American) distribution. In addition, L. coibita is reported for the first time since original description and its range is extended by 400 km southwards. The generic diagnosis of Leslibetaeus is slightly emended.

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