Showing posts with label Journal: Mesoamerican Herpetology. Show all posts
Showing posts with label Journal: Mesoamerican Herpetology. Show all posts

Sunday, September 3, 2017

[Herpetology • 2017] Rhadinella lisyae • A New Species of Rhadinella (Serpentes: Dipsadidae) from the Sierra de Agalta, Honduras


Rhadinella lisyae  McCranie, 2017

Mesoamerican Herpetology. 4(3) 


Abstract
 I describe a new species of dipsadine snake of the genus Rhadinella from an isolated mountain range in east-central Honduras. This population previously was identified as R. lachrymans. Based on morphological similarities, the closest relative of the new species apparently is R. lachrymans. The new species differs from R. lachrymans by the presence of a distinct, complete, white line that borders the upper edge of a dark brown lateral stripe, a dark brown postorbital bar or spot that is separated from the orbit, in reaching a longer adult male size, and the presence of fewer subcaudal scales in males. All known localities for R. lachrymans are from pine-oak forest on or near the Pacific versant of Guatemala and Chiapas, Mexico. Conversely, the new species occurs in broadleaf rainforest, including elfin forest, on the Atlantic versant of Honduras. In addition, the nearest known locality for R. lachrymans is approximately 500 km to the west from that of the new species, and thus geographical distribution and ecological requirements support the representation of two species.

 Key Words: Atlantic versant, Babilonia Mountain, Department of Olancho, external morphology, Rhadinaea godmani group 


Fig. 1. The adult male holotype (USNM 535870) of Rhadinella lisyae sp. nov. in life (TOL 414 mm). Note the white line bordering the dark brown lateral stripe, and the dark brown postorbital bar separated from the orbit by white pigment.

Fig. 2. An adult male paratype (USNM 565821) of Rhadinella lisyae sp. nov. in life (TOL 351 mm).

Fig. 1. The adult male holotype (USNM 535870) of Rhadinella lisyae sp. nov. in life (TOL 414 mm). Note the white line bordering the dark brown lateral stripe, and the dark brown postorbital bar separated from the orbit by white pigment.
Fig. 2. An adult male paratype (USNM 565821) of Rhadinella lisyae sp. nov. in life (TOL 351 mm) showing the same characters as the holotype in Fig. 1.
photos: James R. McCranie


Distribution and habitat: Rhadinella lisyae is known from broadleaf rainforest and elfin forest (Premontane Wet Forest and Lower Montane Wet Forest formations; Holdridge, 1967) at elevations from 1,300 m to 2,290 m, and only from the Sierra de Agalta in east-central Honduras (Fig. 5). ...

Etymology: The specific name lisyae is a matronym for my daughter Lisy, who has never shown fear of small non-venomous snakes and enjoys holding them. 


 James R. McCranie. 2017. A New Species of Rhadinella (Serpentes: Dipsadidae) from the Sierra de Agalta, Honduras. Mesoamerican Herpetology. 4(3); 244–253.


Resumen: Describo una nueva especie de la serpiente dipsadina del género Rhadinella de una cadena montañosa aislada en el este-centro de Honduras. Esta población previamente fue identificada como R. lachrymans. Basándose en similaridades morfológicas, el pariente más cercano de la nueva especie aparentemente es R. lachrymans. La nueva especie se difiere de R. lachrymans por la presencia de una línea blanca distinta y completa que bordea el borde superior de la franja lateral de color café oscuro, una barra postorbital de color café oscuro que está separada de la órbita, en alcanzar un mayor tamaño en los varones adultos, y en tener menos escamas subcaudales en los machos. Todas las localidades conocidas para R. lachrymans son de bosque de pino-encino en o cerca de la vertiente del Pacifico de Guatemala y Chiapas, México. Al contrario, la nueva especie ocurre en la selva tropical de hoja ancha, incluyendo el bosque enano, en la vertiente del Atlántico de Honduras. Además, la localidad más cercana conocida para R. lachrymans está aproximadamente a 500 km al oeste de la nueva especie, y por lo tanto la distribución geográfica y los requisitos ecológicos apoyan la representación de dos especies. 
Palabras Claves: Departamento de Olancho, grupo de Rhadinaea godmani, Montaña de Babilonia, morfología externa, vertiente del Atlántico

Wednesday, January 18, 2017

[Herpetology • 2016] Celestus laf • A New Species of Celestus (Squamata: Anguidae) from western Panama


Celestus laf  
Lotzkat, Hertz & Köhler, 2016   

Abstract
 We describe the second specimen of the anguid genus Celestus collected in Panama as representative of a new species. The holotype of this new taxon was collected in the Reserva Forestal La Fortuna, about halfway between the type localities of the Panamanian endemic C. adercus and the Costa Rican endemic C. orobius. The new form is most similar to these two species, but differs from them and all other Mesoamerican congeners in scalation and coloration. 

Key Words: Cryptozoic diversity, endemism, Lower Central America, Reserva Forestal La Fortuna, Talamancan highlands 


    

Etymology: The specific name is composed of the initials of the “Lost and Found” ecohostel and given in appreciation of the type locality. Ever since their first visit, which occurred at the beginning of their respective Ph.D. projects in May of 2008, Andreas Hertz and Sebastian Lotzkat have benefited greatly from the exceptional hospitality they always experienced at the ecohostel, and were happy to use its facilities as a convenient base for their herpetological explorations of the La Fortuna Forest Reserve and other areas nearby. Through this mutual partnership, the beautifully situated and by now widely known cloud forest lodge has contributed significantly to our herpetodiversity research in western Panama, and we are glad to honor this exceptional venture by dedicating the second new species we found on its grounds to it, well-timed in its 10th anniversary year.

  
Sebastian Lotzkat, Andreas Hertz and Gunther Köhler. 2016. A New Species of Celestus (Squamata: Anguidae) from western Panama. 
Mesoamerican Herpetology. 3; 962–975.


Resumen: Describimos el segundo espécimen hallado en Panamá del género ánguido Celestus como representante de una nueva especie. El holotipo de este nuevo taxón fue colectado en la Reserva Forestal La Fortuna, aproximadamente al medio entre las localidades tipo correspondientes al endémico panameño C. adercus y el endémico costarricense C. orobius. La nueva especie es más similar a estas dos especies, pero se diferencia de ellas, así como de las demás especies del género conocidas de Mesoamérica, en escamación y coloración. 
Palabras Claves: Baja Centroamérica, diversidad criptozoológica, endemismo, Reserva Forestal La Fortuna, tierras altas de Talamanca 

Friday, January 6, 2017

[Herpetology • 2016] Oedipina berlini • A New Species of Salamander (Caudata: Plethodontidae: Oedipina) from the central Caribbean Foothills of Costa Rica


Oedipina berlini  Kubicki, 2016

Abstract 
 I describe a new salamander of the genus Oedipina, subgenus Oedopinola, from two sites in Premontane Rainforest along the foothills of the central Caribbean region of Costa Rica, at elevations from 540 to 850 m. The type locality lies within the Guayacán Rainforest Reserve, a private reserve owned and operated by the Costa Rican Amphibian Research Center, located approximately 2 km north of Guayacán de Siquirres, in the province of Limón. The new taxon is distinguished from its congeners based on phenotypic and molecular (16S and cyt b) characteristics. Additionally, I describe and illustrate a standardized method for taking morphological measurements on bolitoglossine salamanders.

Key Words: Amphibia, Central America, Guayacán, morphometrics, Oedopinola

With the discovery of a new species of Oedipina from the foothills along the Caribbean versant of Costa Rica, the number of species of salamanders in the country has risen to 51. When compared to other countries, this diversity of salamanders places Costa Rica 5th among all countries on the planet, behind the United States (1st), Mexico (2nd), China (3rd), and Guatemala (4th). When considering countries with an area greater than 5,000 sq.km. , the highest diversity density of salamanders is found in the small country of Costa Rica, with one species/1,000 sq.km.
photo: Brian Kubicki   CRAmphibian.com 


Etymology: The specific epithet is a patronym honoring Mr. Erick Berlin, a naturalist native to the United States but living in Costa Rica since 1972, and who has a deep passion for the conservation of nature in the central Caribbean region of Costa Rica, especially along the northeastern slopes of Volcán Turrialba. Erick has been a close friend for many years, and during this time has supported and encouraged my research and conservation efforts with Costa Rican amphibians. I am extremely grateful for his friendship and encouragement. 

Habitat and natural history observations: Oedipina berlini has been found within leaf litter in young secondary to old-growth forest with varying topography. This species is known from five individuals, so a detailed accounting of its natural history cannot be presented here.


Brian Kubicki. 2016. A New Species of Salamander (Caudata: Plethodontidae: Oedipina) from the central Caribbean Foothills of Costa Rica.  Mesoamerican Herpetology. 3: 819–840.


Resumen: Describo una nueva salamandra perteneciente al género Oedipina, subgénero Oedopinola, de dos sitios de Bosque Premontano Lluvioso en las zonas montañosas del Caribe central de Costa Rica, entre los 540 a 850 m de altura. La localidad tipo se encuentra dentro de la Reserva del Bosque Lluvioso de Guayacán (Guayacán Rainforest Reserve), una reserva privada que pertenece y es operada por el Centro de Investigacíon de Anfibios de Costa Rica (Costa Rican Amphibian Research Center), ubicada aproximadamente a 2 km al norte de Guayacán de Siquirres, en la provincia de Limón. Este nuevo taxón se distingue de sus congéneres basándose en características fenotípicas y moleculares (16S y cyt b). Además, describo e ilustro un método estandarizado para tomar medidas morfológicas en las salamandras bolitoglossinas.
Palabras Claves: Amphibia, Centroamérica, Guayacán, morfometría, Oedopinola