Fruit Fly (Producing Culture) Drosophila Melanogaster Plus FREE Fruit Fly Kit Our Producing Fruit Fly Cultures come with over 100 Fruit Flies. Inlcuded: Included ingredients to make a second culture. (just add the flies) (1) 32oz. cup with vented lid, fruit fly media, excelsior, yeast & instructions. (see photo) Melanogaster Fruit Flies are 1/16" compared to Hydei at 1/8". They are wingless but can easily climb smooth surfaces. Each culture is made with OUR PROVEN FRUIT FLY MEDIA containing two mold inhibitors and all the vitamins, minerals, and color enhancers that your pets need to thrive. Because of this special formula, our cultures can and will produce 1000's of healthy fruit flies. WARNING: If you live in an area where the temperature is dropping below 45 degrees during the day, please contact us regarding the need for a heat pack after you make your order. Transit time is usually 2/3 postal days.