Ae. albopictus larvae and the adults were collected round the year, from all artificial containers and natural habitats and reared in the laboratory by standard rearing procedures (Bhat and Kempraj, 2009). The larvae were reared in steel trays approximately 3inch deep and fed on Tetramin (artificial diet) until the adults emerged. Adults were maintained in a cage (70×35×35 cm) and females were fed with blood of white rats every alternate day whereas the males were fed with 10% sugar solution soaked on cotton pad, which were suspended in the middle of the cage. A glass beaker with strips of moistened filter paper was provided in the cage for oviposition. The population was maintained in the laboratory at a set condition of