Results/Conclusions We caught 110 individuals a total of 343 times, with 33.6% of captures in arboreal traps.  The adult male:female ratio was 1:0.58, 87.2% were adults, 48.6% of adult females were pregnant or lactating, and no sexual dimorphism in mass was found.  The average distance from centroid of captures was 12.9 m.  Logistic regression produced an equation with 4 variables.  The species was caught at stations with less grass, shorter distances to nearest trees, more rocks, and a higher maximum canopy.  Using NPMR, 4 variables—percent litter, percent rocks, maximum canopy height, and average distance to nearest trees—were in the best model for the likelihood of P. hylocetes occurrence.  It is more likely found in areas where ground cover is predominantly rocks (75-90%) irrespective of the percentage of litter.  In microhabitats with <40% rocks, litter as ground cover gains increasing importance with the capture likelihood reaching 0.6 with 80-90% litter.  Likelihood of P. hylocetes occurrence increased as average distance from trees decreased, especially when in combination with a greater canopy height.  Overall, we found a strong microhabitat preference for more open rocky areas with little grass, an open understory, and nearby trees that formed a high canopy.