Prince George, British Columbia. Canadian Feeders - Your One Stop Feeder Shop! Scientific Name: Tenebrio molitor Common Name(s): Mealworm, Yellow Mealworm Size: 20-25mm Description: Mealworms are commonly found in most pet stores. They are used as a standard feeder for most insectivorous pets. With general ease of production mealworms are usually the least expensive feeder insect option. Ospika Pet & Farm Supplies - Prince George, BC.