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We studied the habitat preferences and burrow characteristics of trapdoor spiders, Idiops joida Gupta et al 2013, within Dandeli Wildlife Sanctuary and nearby reserve forests of Uttara Kannada district of Karnataka, Western Ghats, India, from January 2010 to April 2010. We sampled 293 plots using 5 m2 quadrats, randomly placed in six habitat types at four localities. Spiders showed patchy distribution throughout the study area. The density of I. joida was highest in uncanopied habitats having sparse vegetation or bare grounds. Steep slopes were strongly preferred by spiders. Burrow characteristics of I. joida, such as burrow diameter, depth, and lid thickness, were independent of habitat type.