The species of fruit fly that might be causing problems for you will depend upon where in the world you live, as there are a number of recognized species. These include the Olive fruit fly, Asian Fruit Fly, Queensland Fruit Fly and other species. In most cases, the fruit flies are only considered a pest if they are not native to the area and/or they become a problem for fruit crops. In any case, if you simply have a case of fruit flies in your home, you will want to get rid of them as soon as possible, regardless of the species. see more here http://killfruitflies.net/