Apple insects are
1)Sanjose scale: Quadraspidiotus perniciosus
- It sucks the cell sap from leaves, twigs, and fruits. The infested fruits also have a scaly appearance and each spot is surrounded by a scarlet or red area.
- Important parasitoid of Sanjose is Encarsia perniciosi.
2)Wooly apple aphid:Eriosoma lanigerum
- The infested plants have pale green leaves and whitish cotton patches on stem and branches, characteristic galls /knots are formed on roots & underground portion of plants.
- Its main parasitoid is Aphelinus mali (attacks on the 4th and 5th nymphal stage).