large number of vermin on the green leaf

agriculture ant aphid aphis arachnid beetle blackfly branch bug citri close control cootie cotton damage ficus fig flea flies food garden gardening gnat green greenfly hesperidum infestation insect ladybug large leaf leaves mealybug mite mulberry natural nature number odorata oleander oleandr parasit parlatoria pest pesticides planococcus plant plantlouse pseudococcidae scale science vermin whitefly woolly