Abstract
The diversity of araneomorph spiders in an ecoturistic tropical forest remnant of approximately 40ha is described. A 1-ha plot with homogeneous vegetation was established. Six sampling methods covered all microhabitats, except tree canopy. Four expeditions were conducted from August 2011 to June 2012. In a total of 485 samples, 4,118 adult specimens representing 205 morphospecies were collected. Nonparametric richness estimates varied between 229 and 295 species. All collected morphospecies and species were documented with 2,233 digital images available at www.unamfcaracnolab.com. These images are intended to expedite species identification and to allow comparisons of taxa not formally described. Morphospecies identifications included: 91 species, 12 as similar to a described species, 86 to genus and 16 to family. Differences between seasonality and species collected revealed that March and June were similar in composition and were better represented in both number of species and adult specimens than August and November, although the collecting effort was the same. The similarity ranged between 0.35 and 0.71 among seasons.
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