Twice lost, twice found: A new species of Gonolobus (Apocynaceae: Asclepiadoideae) with a reappraisal of the genus in the Yucatan Peninsula Biotic Province

Phytotaxa ◽  
2022 ◽  
Vol 530 (2) ◽  
pp. 141-162
Author(s):  
GERMÁN CARNEVALI ◽  
GUSTAVO A. ROMERO-GONZÁLEZ ◽  
JOSÉ LUIS TAPIA-MUÑOZ ◽  
IVÓN M. RAMÍREZ-MORILLO ◽  
CLAUDIA J. RAMÍREZ-DÍAZ ◽  
...  
Keyword(s):  
New Species ◽  
Yucatan Peninsula ◽  
Conservation Status ◽  
Color Pattern ◽  
New Combination ◽  
Yucatán Peninsula ◽  
Black Band ◽  
Different Color ◽  
The Right ◽  
A New Species

Gonolobus is reassessed in the Yucatan Peninsula Biotic Province (YPBP). The genus consists of seven taxa in the area: six species and two subspecies. These include a taxon that we propose here as a new species and the treatment of G. yucatanensis as a subspecies of G. stenanthus and the new combination G. stenanthus subsp. yucatanensis is proposed. These two taxa are endemic to the YPBP. The other species are G. barbatus (for which we propose a lectotype), G. cteniophorus, G. fraternus, G. glaberrimus, and G. leianthus. The new species is G. caamalii Carnevali & R. Duno, restricted to the Yucatán state in Mexico and distinguished by its corolla lobes with a dark purple (almost black) longitudinal, callose band along the proximal 2/3 on the right side of the lobes and a 1.1–1.3 mm broad, annular, continuous dark purple-black band surrounding the gynostemium and corona at the base of the corolla lobes. It appears related to G. leianthus from southern Megamexico, a species from humid forests at higher elevations and that differs in its larger flowers with broader corolla lobes and a strikingly different color pattern in the flowers. The new species is described, illustrated, and discussed. Entries for all Gonolobus species from the YPBP include a brief discussion and specimen citations. The conservation status of the Gonolobus taxa endemic to the YPBP are assessed either as as Endangered (EN) or as Near threatened (NT). Distributional maps for all Gonolobus from the area covered are presented. Finally, we offer a key to Gonolobus of the YPBP.

scholarly journals A new species of Pseudancistrus from the Rio Caroni Venezuela (Siluriformes: Loricariidae)

Zootaxa ◽  
2008 ◽  
Vol 1731 (1) ◽  
pp. 33 ◽  
Author(s):  
JONATHAN W. ARMBRUSTER ◽  
DONALD C. TAPHORN
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Color Pattern ◽  
Sensu Stricto ◽  
Dorsal Plate ◽  
Stream Capture ◽  
Especie Nueva ◽  
Del Rio ◽  
Relationship Of ◽  
A New Species

Pseudancistrus reus is a new species from the Río Caroní (Río Orinoco drainage) of Venezuela known from two individuals. It differs from all other Pseudancistrus by having a color pattern consisting of alternating dark and light bars. In addition, it differs from all except P. genisetiger and P. papariae by having an incomplete mid-dorsal plate row and from P. genisetiger and P. papariae by having 18 contiguous mid-dorsal plates vs. 14 plates, a plateless break and then two more plates at the end of the caudal peduncle. The type locality of P. reus was submerged by the construction of the Caruachi dam, and is also the only known locality of the gymnotiform Sternarchorhynchus gnomus, making it imperative that the conservation status of these and other potential Caroní endemics be assessed. Pseudancistrus reus is the first species of Pseudancistrus sensu stricto from the Orinoco. Although the relationship of the species to other Pseudancistrus is unknown, P. reus may have gained access to the Orinoco either via stream capture between the Caroní and the Rio Uraricoera (Rio Branco – Rio Negro drainage) or via stream capture between the Caroní and either the Cuyuní or Mazaruni Rivers (Essequibo River drainage).key word: Siluriformes, Loricariidae, taxonomySe describe como especie nueva Pseudancistrus reus del río Caroní (cuenca del río Orinoco) en Venezuela, basada en dos ejemplares. Difiere de todas los demás Pseudancistrus en tener un patrón de pigmentación que consiste de barras claras alternando con oscuras. Además, difiere de todas los demás, menos P. genisetiger y P. papariae en tener la fila medio-dorsal de placas incompleta, y de P. genisetiger y P. papariae difiere en tener 18 placas medio-dorsales contiguas vs. 14 placas seguidas por una zona sin placas y luego dos placas más en el pedúnculo caudal). La localidad típica de P. reus fue sumergida por las aguas del embalse Caruachi. Ese sitio es también la localidad típica de Sternarchorhynchus gnomus, haciéndolo imprescindible evaluar el estado de conservación de estas dos especies más las otras endémicas del bajo Caroní. Pseudancistrus reus es la primera especies de Pseudancistrus sensu stricto de la cuenca del río Orinoco. Aunque desconocemos las relaciones con otras Pseudancistrus, P. reus puede haber ganado acceso al Caroní vía la captura de caños en las cabeceras del río Uraricoera-Branco-Negro o del río Cuyuní o Mazaruni, afluentes del río Essequibo.

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.

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.

scholarly journals A New Scaphelline Volute from the Gulf of Mexico

The Festivus ◽  
2019 ◽  
Vol 51 (2) ◽  
pp. 97-102
Author(s):  
Edward Petuch ◽  
David Berschauer
Keyword(s):  
Gulf Of Mexico ◽  
Yucatan Peninsula ◽  
Color Pattern ◽  
The Other ◽  
New Subspecies ◽  
Yucatán Peninsula ◽  
Different Color

A new subspecies of Scaphella junonia has been discovered off the Alacranes Reefs, along the northernmost edge of Campeche Bank, Yucatan Peninsula of Mexico. The new subspecies, here named Scaphella junonia curryi, differs from the other four known S. junonia subspecies in having the narrowest and most elongated shell, having the strongest and most extensive ribbed sculpture on the spire whorls, and in having a different color pattern composed of very large, almost fused rectangular spots. The new subspecies is confined to the edge of the Campeche Escarpment off the northern Campeche Bank islands and reefs.

What’s new in Chamaecrista (Fabaceae, Caesalpinioideae) from the Brazilian Cerrado?

Phytotaxa ◽  
2015 ◽  
Vol 213 (3) ◽  
pp. 253 ◽  
Author(s):  
Alessandro Oliveira Souza ◽  
MARCOS JOSÉ DA SILVA
Keyword(s):  
New Species ◽  
Geographical Distribution ◽  
Conservation Status ◽  
New Combination ◽  
Brazilian Cerrado ◽  
Taxonomic Treatment ◽  
A New Species

During the taxonomic treatment of Chamaecrista sect. Absus ser. Rigidulae as the object of the master’s dissertation of the first author, the analyses of our own collections and specimens from several Brazilian herbaria led us to establish a new species, Chamaecrista sparsifolia, and propose a new status and a new combination for Chamaecrista chaetostegia var. obolaria. The geographical distribution, phenology, conservation status, as well as images and illustrations of both taxa are given.

A new annual fish of the genus Simpsonichthys (Cyprinodontiformes: Cynolebiidae) from the upper Rio Jequitinhonha basin, Brazil

Zootaxa ◽  
2017 ◽  
Vol 4263 (1) ◽  
pp. 165 ◽  
Author(s):  
DALTON TAVARES BRESSANE NIELSEN ◽  
TIAGO CASARIM PESSALI ◽  
GUILHERME MOREIRA DUTRA
Keyword(s):  
New Species ◽  
Conservation Status ◽  
Color Pattern ◽  
Pectoral Fin ◽  
Annual Fish ◽  
Caudal Fin ◽  
Eastern Brazil ◽  
Eye Diameter ◽  
Fin Length ◽  
A New Species

A new species of Simpsonichthys is described from the upper rio Jequitinhonha basin, Minas Gerais, eastern Brazil. It is diagnosed from all congeners by presenting an A-patterned frontal squamation. Additionally, males of the new species differs from all congeners by the color pattern of body, the color of iris, the absence of contact organs in the pectoral fin, presence of scales on anal-fin base, pectoral-fin length, caudal fin length, and eye diameter. Females of the new species can be diagnosed from remaining congeners by the pectoral-fin length. The conservation status of the new species is evaluated. Comments on the relationships of the new species within the genus Simpsonichthys are presented.

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.

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