الفهرس 
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Abstract
Vegetables and field crops are considered an important crops as a source of human and animal food. Several pests attacking these crops and affected the yield quantity and quality. One of these pests is the Serpentine leaf miner, LiriomyzQ trifolii (Burgess) (Diptera: Agromyzidae) where it can removes the photosynthetic material of the plant leaves and indirectly decrease the yield of the plants.
The present work was conducted in Egypt and USA. In Egypt, the study was carried out in the Farm of the Faculty of Agriculture, Minia University during three consecutive seasons of 2007/2008, 2008/2009 and 2009/2010 to investigate certain ecological and biological studies on broad bean and snap bean plants. In USA, the study was carried out in the Entomology Environmental Laboratory Greenhouse (EEL), Purdue University during 2010/2012 to evaluate the host plant resistant of tomato varieties (antixenosis and antibiosis characteristics).
The population dynamics of the leafminer adults L. trifolii were monitored in broad bean fields (c.v. Sakhal) that planted in the third week of October during 2008/2009 and 2009/2010 seasons using the sticky traps that set at 50 and 100 cm in the four plots representing each of cardinal directions (north, south, east and west).
Weekly records during 2008/2009 season showed that the number of adults was low in both trap height levels during the period extended from the third week of November till the third week of December.