he spiders, Uroctea limbata (C.L. Koch,1843), of family Oecobiidae, were collected from greenhouses in Giza Governorate, Egypt. Their life cycle was studied in laboratories at 26-28oC and 60-70% R.H. The male ones reached their maturity after 6-7 spiderling instars, with an average of 230.7±3.4 days, while the females after 7-8 spiderling instars with an average of (273.1±3.1 days). Spiders were fed on different instars of the cotton leaf worm. Food consumption and mating behaviour were observed. This study is a necessary step to know the role of the spider, U. limbata in the biological control, especially in greenhouses.