Part of the reason why people are so tolerant of ladybugs is that, for the most part, they feed on plant pests and live outside. the asian lady beetle was first introduced to pennsylvania in the 1960s as a natural form of pest control for aphids and scale insects. The insect has been steadily making its way west with no signs of slowing. The beetles seem to get inside and just die -usually just see them clinging to the garage door or trim around the garage doors, never really see too many living beetles inside. The multi-colored asian lady beetle goes through four stages in its life cycle. Female adult lady beetles lay eggs on plants near colonies of aphids, mites and scale insects. After 3-7 days, the larva hatch out and begin searching for food. Species and origin japanese beetles are native to northern japan. Impactsadult japanese beetles feed on more than 300 species of plants, including apple, birch, cherry, crabapple, elm, horse chestnut, linden (basswood), maple, mountain ash, oak, plum, and willow trees, as well as. Japanese beetles (popillia japonica) were first found in the united states in 1916, after being accidentally introduced into new jersey. Until that time, this insect was restricted to japan where it is not a major pest.