Wingless Fruit Fly Culture (Drosophila Melanogaster). Condition is New. These flightless fruit fly cultures come in a 32oz cup with a ventilated lid, excelsior wool and culture mix. It will come with 100 adult flys that will already be laying new generations upon arrival. For best practices, do not use flys until 5 days after first generation hatches to ensure new generation. These cultures will last you several weeks. Shipped with USPS First Class. Wingless Melanogasters are a great feeder for your Newley hatched reptiles/amphibians that need a smaller feeder. They are typically a little smaller than the wingless melanogaster.