white moth bug on tree leaves in garden background

white moth bug nymph whitefly infect pest powdery infest leaves green plant tree garden background develop move underside sap sucking tiny insect foliage common houseplant fungal harm hemiptera infestation wax tropical spread disease control contagious colony branch mealybugs natural nature outbreak pathogen sticky gardening closeup soft focus vertical copy space color infects plants house pests leaf flower produce shrub food grass herb wildflower invertebrate blossom twig animal