Faunistic survey and distribution of Water mites (Acari: Hydrachnida) in Khorramabad district

Water mites as a dominant animal fauna of freshwater resources are a bioindicator factorof freshwater and also as an important biocontrol agent for aquatic insect pests. The research was carried out during 2008-2009 to study the aquatic mites fauna of Khorramabad district. In this research 12 mite species belonging to six genera and five mite families were collected and identified and Hygrobates calliger Piersig,1896 was the most predominant species with 30% of collected species.The identified mites are as fallowing:1) Family Hygrobatidae Koch, 18241-1) Hygrobates fluviatilis (Strom, 1768)1-2) Hygrobates longiporus Thor, 18981-3) Hygrobates calliger Piersig, 18961-4) Hygrobates bucharicus Sokolow, 19281-5) Hygrobates sp.1-6) Atractides acutirostris Motas & Angelier, 19271-7) Atractides mirkopesici Pesic, 2004Family Sperchontidae Thor, 1900 2)2-1) Sperchon sp.3) Family Lebertiidae Thor, 19003-1) Lebertia sp.4) Family Torrenticolidae Piersig, 19024-1) Torrenticola brevirostris (Halbert, 1911)4-2) Montractides aberratus (Lundblad, 1941)5) Family Mideopsidae Koenike, 19105-1) Mideopsis roztoczensis Biesiadka & Kowalik, 1987