Introduction, Colonisation and New Records of Some Biocontrol Agents of San Jose Scale, Quadraspidiotus perniciosus Comstock (Hemiptera: Coccidae) in Kullu Valley, H.P., India

San Jose Scale, Qudraspidiotus perniosus Comstock is a serious pest of temperate fruits and is world-wide in distribution. The pest has been recorded on more than 200 different species of plants (Atwal, 19?6). In the Himachal Pradesh, the pest was first reported at Kullu in 1921 and at Kotgarh (Shimla) in 1924 (Pruthi and Rao, 1951).