Brown mite, Bryobia rubrioculus (Scheuten) is the most important pest of cherry and plum trees in West Iran. Mites caused considerable damage in select orchards in West Iran. So its biology was studied during 2010 and 2011. This pest overwintered as egg on fruit tree shoots. Larvae of the first generation appeared early in April at 10.58 °C. This pest completed 4–5 generations/year. Mite population peaked in September. This database can be used to develop ecofriendly management practices.
