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The checklist of Collembola (Hexapoda, Arthropoda) from west of Iran

. In this study, the list of Collembola from west of Iran and collection information such as study site, habitats, e.g. soils, grasslands, leaf-litter, vegetation, snowfields, etc., and collectors has been presented between years 2013-3018. Moreover some samples were collected and the identified by the author during 2017-2018. In the last case, Collembolans were extracted using the respirator or Berlese funnels. When greater clearing was required, Nesbitt's solution (40g chloral hydrate, 25 mL distilled water, and 2.5 mL concentrated acetic acid) was used for heavily pigmented specimens. In the first Iranian checklist of Collembola published in 2013, 17 species, 15 genera and seven families were introduced from west of Iran. After review and analysis of the available literature and the examination of samples collected by the author from west of Iran, were listed 88 species, belonging to 42 genera, 16 families and four orders. The genus Entomobrya and Folsomia are having highest number of species for analyzed region. An up-to-date systematic checklist of Collembolans has been provided.