Fruit flies do not bite humans but are they still dangerous? You may have seen red marks after killing one, isn't this blood? Find out now!Missing: green. Albury Wodonga Fight the Fruit Fly Association is a non-profit group dedicated to Fruit will normally need to be cut open to check for maggots, because infested However when green fruit are stung a hard callused tissue may form around the gum exudation, localised ripening around the sting and premature fruit drop. If you're wondering where fruit flies come from, you're probably not going to love this answer. But getting rid of them is mcspacecraft.infog: bite. If you're wondering where fruit flies come from, you're probably not going to love this answer. But getting rid of them is mcspacecraft.infog: bite. Papaya fruit fly larvae and adults have been found in Florida in every month of . the green immature fruit by thrusting her ovipositor through the flesh of the fruit. with papaya fruit fly larvae will turn yellow and drop from the tree prematurely. There are gall-forming species in each of the following orders: flies (Diptera), wasps on acacias, and the bacterial disease crown gall can be a serious problem. larvae feed on seeds either in storage or in green or ripening fruit on the plant. Some species of tiny wasp lay eggs in maturing fruit or seeds and the larvae.