Aspidiotus perniciosus , Diaspidiotus perniciosus Insecta , Homoptera , Diaspididae . The average number of nymphs produced on a favorable host plant is 400.
Nymphs are at first mobile and then settle down by inserting their stylets into plant cells.
There are 2-4 generations depending on the region. Colony on rose Male scales are elongate whereas those of females are circular and also larger. . The scale of the female was turned upside down to show the colour of the body of the female. The change in colour of the epidermis reveals the presence of scale insects. . The change in colour of the epidermis is due to the presence of scale insects. .