brown citrus aphids eating a common purslane plant

agriculture animal aphid aphididae aphidina aphidinae aphidini aphidoidea aphids aphis arthropoda black brown bug citricida citrus common damage detail disease eating entomology farming garden green hemiptera hexapoda infest infestation insect insecta insects leaf macro macrosiphin natural nature oleracea pest pests plague plant portulaca purslane toxoptera tree wildlife