The results of the study of the Collembola living in the epiphytic Tillandsia violacea at the National Park "El Chico", Central Mexico, during the rainy season of 1998 are presented. A total of 120 epiphytic plants were collected from Abies religiosa and Quercus spp. at two different elevations and processed in Berlese-Tullgren funnels for 15 days. The Collembola were isolated, quantified and mounted in Hoyer's solution. 22,421 Collembola of 23 species were obtained which represented 50% of all arthropods found. Sminthurinus guadrimaculatus was the most abundant representing 64% of all the Collembola
followed by Schottella distincta (17%) and Sphaeridia gr. brevipila (8%). The multiple analysis of variance shows that altitude does not have a significant effect on Collembola abundance (F=2.41
df= 1,103
p>0.05), but it clearly does on the community composition. Supporting tree and plant size have a significant effect on Collembola abundance. There was a positive correlation between the physical and chemical parameters (pH, conductivity, sodium, potassium, calcium and dissolved C) of the water and soil from Tillandsia violacea with the abundance of the Collembola.