Molecular taxonomy of Speleonectes fuchscockburni, a new pseudocryptic species of Remipedia (Crustacea) from an anchialine cave system on the Yucatán Peninsula, Quintana Roo, Mexico

Zootaxa ◽  
2012 ◽  
Vol 3190 (1) ◽  
pp. 31 ◽  
Author(s):  
MARCO T. NEIBER ◽  
FINJA C. HANSEN ◽  
THOMAS M. ILIFFE ◽  
BRETT C. GONZALEZ ◽  
STEFAN KOENEMANN
Keyword(s):  
New Species ◽  
Yucatan Peninsula ◽  
Molecular Taxonomy ◽  
Quintana Roo ◽  
Cave System ◽  
Yucatán Peninsula ◽  
The Status ◽  
The Caribbean ◽  
Coi Sequences ◽  
A New Species

A new species of Remipedia (Crustacea) is described from a recently discovered section of the anchialine cave systemCenote Crustacea, situated on the northeastern coast of the Yucatán Peninsula. Speleonectes fuchscockburni n. sp. is thesecond remipede species from the Caribbean coast of Mexico. Adult specimens are relatively small and slender, with bodylengths between 12 and 16 mm, and up to 35 trunk segments. The new species can be distinguished morphologically fromS. tulumensis by sparsely setose appendages, a ventral antennular flagellum composed of 5–6 segments, and 10–12 deeplyincised denticles of the terminal maxillary and maxillpedal claws. The status of Speleonectes fuchscockburni as a new spe-cies is validated by a comparison of cytochrome c oxidase subunit I (COI) sequences from selected remipede taxa, includ-ing Speleonectes tulumensis. The uniquely high abundance of S. tulumensis in Cenote Crustacea and the distribution of the two remipedes in this cave are discussed in relation to hydrology and cave morphology.

Triacanthoneus akumalensis, a new species of alpheid shrimp (Crustacea: Caridea: Alpheidae) from an anchialine cave in Quintana Roo, Mexico

Zootaxa ◽  
2012 ◽  
Vol 3154 (1) ◽  
pp. 61 ◽  
Author(s):  
FERNANDO ALVAREZ ◽  
THOMAS M. ILIFFE ◽  
BRETT GONZALEZ ◽  
JOSÉ LUIS VILLALOBOS
Keyword(s):  
New Species ◽  
Yucatan Peninsula ◽  
Quintana Roo ◽  
Yucatán Peninsula ◽  
Fourth Species ◽  
A New Species ◽  
Alpheid Shrimp

A new species of Triacanthoneus Anker, 2010 is described from an anchialine cave near Akumal, Quintana Roo, Mexico.Triacanthoneus akumalensis sp. nov., is the fourth species in the genus and can be distinguished from the previously de-scribed species by the position of the sharp lateral teeth on the carapace, the length and shape of the rostrum, the eyes beingcompletely concealed by the carapace, the dentition of the major chela fingers, and the shape of the telson. The presenceof a pleural process in the new species represents a new character for the genus. The description of T. akumalensis sp. nov. increases the number of caridean genera having representatives in the anchialine systems of the Yucatan Peninsula to 11.

scholarly journals Xibalbanus cozumelensis, a new species of Remipedia (Crustacea) from Cozumel, Mexico, and a molecular phylogeny of Xibalbanus on the Yucatán Peninsula

2017 ◽  
Author(s):  
Jørgen Olesen ◽  
Kenneth Meland ◽  
Henrik Glenner ◽  
Peter J. Van Hengstum ◽  
Thomas M. Iliffe
Keyword(s):  
New Species ◽  
Gene Flow ◽  
Yucatan Peninsula ◽  
Cave System ◽  
Yucatán Peninsula ◽  
Sea Bed ◽  
The Last Glacial Maximum ◽  
Early Cenozoic ◽  
A New Species ◽  
The Last Glacial

A new species belonging to the crustacean class Remipedia is described from an anchialine cave system on the island of Cozumel (Mexico), and is illustrated and compared morphologically and molecularly (CO1 and 16S) with closely related taxa. Xibalbanus cozumelensis sp. nov., the first remipede described from Cozumel, is morphologically similar to Xibalbanus tulumensis (Yager, 1987) from the Yucatán Peninsula, but the two species are genetically separate from each other (about 10% in CO1). A phylogenetic (Bayesian) analysis of Yucatán remipede populations based on CO1 and 16S placed them in a monophyletic Xibalbanus (in Xibalbanidae fam. nov.), with X. cozumelensis as most closely related to X. tulumensis. The Yucatán Peninsula and Cozumel have been separate since approx. early Cenozoic (~65 Ma), which suggests allopatric speciation for X. cozumelensis sp. nov. and X. tulumensis. However, the comparatively low genetic divergence between the two species may indicate that there has been gene flow between ‘mainland’ Yucatán and Cozumel long after the geological separation of the two landmasses, e.g., in cave systems under the sea bed, either continuously or sporadically, for example during the Last Glacial Maximum when the sea level was about 120 m lower than today.

Acanthemblemaria aceroi, a new species of tube blenny from the Caribbean coast of South America with notes on Acanthemblemaria johnsoni (Teleostei: Chaenopsidae)

Zootaxa ◽  
2020 ◽  
Vol 4816 (2) ◽  
pp. 209-216
Author(s):  
PHILIP A. HASTINGS ◽  
RON I. EYTAN ◽  
ADAM P. SUMMERS
Keyword(s):  
New Species ◽  
Costa Rica ◽  
South America ◽  
Caribbean Coast ◽  
The Caribbean ◽  
Coi Sequences ◽  
A New Species

Acanthemblemaria aceroi new species is described from the upwelling region of the Caribbean coasts of Venezuela and Colombia. It differs from its closest relative, Acanthemblemaria rivasi Stephens, 1970, known from Panama and Costa Rica, in the posterior extent of the infraorbitals, details of head spination, and unique COI sequences. The description of Acanthemblemaria johnsonsi Almany & Baldwin, 1996, heretofore known only from Tobago, is expanded based on specimens from islands offshore of eastern Venezuela. 

A new species of cirolanid isopod (Peracarida, Isopoda) collected from Cenote Aerolito, Cozumel Island, northwestern Caribbean

Crustaceana ◽  
2015 ◽  
Vol 88 (2) ◽  
pp. 152-163 ◽  
Author(s):  
Manuel Ortiz ◽  
Sergio Cházaro-Olvera
Keyword(s):  
New Species ◽  
Yucatan Peninsula ◽  
Marine Species ◽  
Yucatán Peninsula ◽  
Cozumel Island ◽  
Appendix Masculina ◽  
Mexican Caribbean ◽  
A New Species

A new species ofCirolanaLeach, 1818, collected from Cenote Aerolito, Cozumel Island, Mexican Caribbean, is described.Cirolana(Anopsilana)adrianisp. nov. has a body 2.7× as long as wide, widest at pereonites 5-6; cephalon smooth, with small rostral point; pereonites without tubercles or ridges; antenna 2 not surpassing back of segment 2 of pereon; pleonite 4 lacking free ventrolateral margins; pleotelson as long as wide, smooth, with 9 distal robust setae; appendix masculina extremely long, 2× as long as endopod of pleopod 2. The main differences between the new species and the marine speciesCirolana(Anopsilana)jonesi(Kensley, 1987) andC.(A.)sinu(Kensley & Schotte, 1994), as well as the stygobitic speciesC.(A.)yucatanaBotosaneanu & Iliffe, 2000, the most similar known species ofCirolana(Anopsilana) in the region, are described. This is the second isopod of the genusCirolanarecorded from the karstic systems of the Yucatan Peninsula.

Nebalia Lagartensis (Leptostraca) a New Species From the Yucatan Peninsula, Mexico

Crustaceana ◽  
1995 ◽  
Vol 68 (1) ◽  
pp. 1-11 ◽  
Author(s):  
José Luis Villalobos-Hiriart ◽  
Elva Escobar-Briones
Keyword(s):  
New Species ◽  
Yucatan Peninsula ◽  
Western Atlantic ◽  
Yucatán Peninsula ◽  
A New Species

AbstractA new species of Nebalia is described from Ría Lagartos in the Yucatán Peninsula, Mexico, increasing the number of described species in this genus to 13. The species closely resembles a complex of species recognized for the tropical western Atlantic that will need further study. The importance of the shape of the denticles on the dorsal plconal segments 6 and 7 as a taxonomical character is discussed.

scholarly journals Stephanospora mayana (Stephanosporaceae, Russulales), a new sequestrate fungus from Yucatán Peninsula, Mexico

MycoKeys ◽  
2019 ◽  
Vol 48 ◽  
pp. 115-124
Author(s):  
Javier Isaac de la Fuente ◽  
Gonzalo Gonzalo Guevara-Guerrero ◽  
Iván Oros-Ortega ◽  
Romeo Sánchez-Zavalegui ◽  
Iván Córdova-Lara ◽  
...  
Keyword(s):  
New Species ◽  
Yucatan Peninsula ◽  
Variable Size ◽  
Lowland Forest ◽  
Yucatán Peninsula ◽  
Ecological Association ◽  
A New Species

Stephanosporamayana is presented as a new species from the Yucatán Peninsula, Mexico. This species is distinguished by the yellowish pileus, basidiospores with a small corona (4–6 × 1–2.5 µm), and variable size (8.0–17.0 × 6.0–11.0), thin pileus (21–40 µm) and the ecological association to lowland forest with Haematoxylumcampechianum, Gymnopodiumfloribundum, Coccolobadiversifolia, Metopiumbrownei and Pinuscaribaea. It differs from the American species of Stephanospora, like S.michoacanensis and S.chilensis, by its larger basidiospores. Descriptions, photographs and discussions are presented.

scholarly journals Lophiaris tapiae, a new species of the Lophiaris oerstedii complex (Orchidaceae) from the Yucatan Peninsula, Mexico

2011 ◽  
pp. 17 ◽  
Author(s):  
Ricardo Balam ◽  
Germán Carnevali ◽  
William Cetzal-Ix ◽  
Rodrigo Duno
Keyword(s):  
New Species ◽  
Yucatan Peninsula ◽  
Yucatán Peninsula ◽  
A New Species

Se describe e ilustra a Lophiaris tapiae Balam & Carnevali (Orchidaceae: Oncidiinae). La nueva especie se conoce solamente del área de Escárcega y de los márgenes de los ríos Candelaria y Palizada en el estado de Campeche, México. Se compara con los representantes del complejo Lophiaris oerstedii, particularmente con L. andrewsiae, con la que se encuentra cercanamente relacionada. Se incluye un mapa de distribución de las especies y una clave de identificación para todos los taxa del complejo L. oerstedii. De acuerdo con los criterios del Método de Evaluación del Riesgo de Extinción de las Especies Silvestres en México (MER) se propone el estado de conservación en “peligro de extinción (P)” para L. tapiae.

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