Impact of temperature and relative humidity on population abundance of predatory spiders in cotton fields.

An experiment on recording the predatory spiders from sprayed and unsprayed cotton grown at Agriculture Research Institute Tandojam was carried out during July-September 2008. The results revealed that seven species of predatory spiders were recorded from cotton and identified first time from Sindh. Lycosidae (513) and Thomisidae (210) families comprised of Lycosa tista, L. kempi, L. machenziei and Pardosa berminica and Thomisus projectus, T. bulani and Thomisus sp. Total capture in the months of July, august and September were 164 (24.94±2.24 o C, 78.86±4.40%R.H.), 444 (22.5±1.28