INTRODUCTION Moravvej et al.(2003) identified 5 families and 14 genera of Collembola from the Tehran region with 5 of them belonging Springtails (Collembola) are one of the most important and to the family Entomobryidae (Entomobrya handscici, E. abundant arthropod in the soil. They play an ecological role in unostrigata, E. lindbergi, Pseudosinella octopunctat and soil genesis, dynamics and evolution (Palacios-Vargas, Sinella curviseta). Also Moravvej et al.(2007) described 5 1985). They also have an important role in the food chain by species of Isotomidae from the Tehran region including two decomposition and soil respiration. In the recent years, new records for the fauna of Iran. Baquero et al.(2008) Springtails have been used as model arthropods in basic reported Entomobrya handschini from Iran. Nematollahi et research in soil ecology, and have been used as test organisms al.(2009) found 3 species of Entomobryidae (Sinella for soil ecotoxicological work much as the cladoceran, tenebricosa), Isotomidae (Proisotoma minuta) and Daphnia pulex, has been used for tests of water quality (Van Hypogastrudidae (Ceratophysella spp.) in vegetables and Straalen and Løkke, 1997). ornamentals greenhouses in Esfahan province. Kahrarian et The Collembolan fauna of several countries in the world has al.(2011) reported genus Prodrepanura as a new record for already been overviewed in the recent past (eg Mandal and the fauna of Iran. Hazra, 2009) and about 8000 species has been described worldwide (Bellinger et al., 2009). In spite of this fact, the MATERIAL AND METHODS Collembolan fauna of Iran has been studied by only a few workers and nobody examined Collembolan fauna in This study was based on specimens collected from three Kermanshah province until now. counties; Kermanshah, Sahneh and Harsin Located in The first records of Collembolan referring to Iran are noted by Kermanshah Province. The sites from which samples were Cox in 1982. He listed 70 species belonging to 30 genera in 5 taken are shown in (Fig. 1). Kermanshah Province is located in families from the northwestern and central north provinces of the western part of Iran. It has a moderate and mountainous the country, of which 17 were belonging to the family climate and elevation average of about 1350 metres above sea Isotomidae and 14 species (6 genera) of them were belonging level. It rains most in winter and is moderately warm in to the family Entomobryidae (Cox, 1982). After a relatively summer. The annual rainfall is 500 mm. The average long spell of time some workers recorded different temperature in the hottest months is above 22 C. Collembolan fauna from some different parts of Iran. Samples were collected from the surface layer of soil and