A new species of frog of the Eleutherodactylus alfredi group is described from the mountains of Zoquitlan, Puebla, Mexico. It is known from a single adult male only 15.8 mm in snout-vent length. The new species is known ...

A new species of Lepidophyma is described freom the Sierra Negra in southern Puebla. This new species is known only freom the type locality and is characterized by a combination of several characters (number of dorsal ...

57 species and infraspecific taxa belong to 17 genus of diatoms from a creek in Texcala, near Tehuacan City, Puebla, Mexico are registered. Six taxa not reported before from Mexico are illustrated and described with notes ...

Ninety-eight Mexican free-tailed bats, Tadarida brasiliensis mexicana, collected from 4 locations in Mexico between November 1996 and June 1998, were examined for metazoan parasites. Twenty-one parasitic taxa belonging to ...