BLACK BEETLE LARVA (Zophobas morio) are now indispensable in breeding and keeping large insectivores - whether reptiles or exotic mammals and birds. A morio worm is rich in nutrients. Ideal for building up lost fat reserves. They should be stored or kept at about 20 °C. They resemble mealworms but are much larger and therefore even more suitable to give to your reptile as they are bitten to death before being swallowed.