The National Park of Aparados da Serra (PNAS), located at the Eastern border of Araucarian Plateau, is one of the main protected areas of Southern Brazil, being characterized by the occurrence of fragments of mixed ombrophilous forest, surrounded by wet and dry grassland fields, and a continuous area of dense ombrophilous forest. We registered for the PNAS 35 species of land planarians, distributed into five genera (Geoplana Stimpson, 1857, Choeradoplana Graff, 1896, Notogynaphallia Ogren & Kawakatsu, 1990, Pasipha Ogren & Kawakatsu, 1990 and Cephaloflexa Carbayo & Leal-Zanchet, 2003) of the family Geoplanidae, subfamily Geoplaninae. We observed 23 and 21 species, respectively, in the areas of mixed ombrophilous forest and dense ombrophilous forest. The Jaccard's similarity coefficient between the two areas was 0.42. In areas of dry grassland field, only one species was observed. Seven species were collected in disturbed open habitats, four of them also observed in the forest areas. The known distribution of four species, i.e., Cephaloflexa bergi (Graff, 1899), Notogynaphallia graffi Leal-Zanchet & Froehlich, 2006, Geoplana franciscana Leal-Zanchet & Carbayo, 2001, and Geoplana josefi Carbayo & Leal-Zanchet, 2001, the two latter ones having been known only from their type-locality, is amplified.
Survey; biodiversity; Terricola; Geoplanidae; Atlantic Forest
