Meal Worms are larvae of beetles. Several species are sold by pet shops. The best for study purposes is the larger Tenebrio molitor, which is a minor pests of stored food stuffs. They breed well in dry processed grains such as bran, poultry food and breakfast cereals and can be kept in a large plastic box with a perforated lid. An occasional piece of carrot or fruit skin should be added to give a moisture source for the adults. Eggs, larvae, pupae and adults occur dispersed through the food material and can be sifted out.
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