No abstract

We describe a new species of treefrog of the genus Ptychohyla from southern Mexico occurring to the east of the Isthmus of Tehuantepec. This new species can be distinguished from Mexican congeners by a combination of a pale pink iris and the presence of nuptial excrescences in breeding males. Including this new taxon, the number of species of Ptychohyla increases to 14, with seven of these occurring in Mexico. The new species is relatively common in pristine tropical forests, but appears to be sensitive to habitat degradation and has not been found in human modified habitats, suggesting that habitat modification is a threat for this hylid frog.

No abstract

Biological invasions are widely recognized as a significant component of human-caused global environmental change, often resulting in the loss of biological diversity and ecosystem function (Hulme, 2003). The greenhouse frog Eleutherodactylus planirostris has direct development (no aquatic stage) and deposits its eggs in moist soil, which facilitate human-mediated colonization (Christy et al., 2007) through transportation in potted plants (e.g. Kraus et al., 1999;Kraus and Campbell, 2002).The greenhouse frog is native to the Caribbean islands of Cuba, Bahamas and Cayman Islands (Díaz and Cádiz, 2008;Olson et al., 2012a), but it has a wide non-native distribution in the United States,

Se hace una recopilación de los cambios taxonómicos y nomenclaturales que afectan la taxonomía de las especies mexicanas de anfibios y reptiles. Asimismo se da una lista de las especies nuevas para la ciencia descritas en los últimos once años y las especies que se citan por primera vez para México. Se registran estos cambios y adiciones hasta diciembre de 2003. Con esta información, se eleva el número de especies de anfibios y reptiles de México de 997 a 1165 desde la publicación de la última lista de especies de herpetozoos para el país.