What best identifies the Dark Mealworm?

The Dark Mealworm is accurately identified as a large grain beetle, characterized by its dull black coloration and its status as a secondary feeder. This species is often associated with stored products and can be found in environments where grain is stored.

Understanding this identification helps in pest management strategies, as recognizing the type of beetle enables the operator to apply appropriate control measures tailored to grain feeders. The size and coloration are key identifying features, as they distinguish the Dark Mealworm from other similar species that may have different feeding habits or physical characteristics. The mention of being a secondary feeder indicates its role in the ecosystem of grain storage, where it may not be the primary pest but can still cause damage and contamination.

Other attributes, like the reproductive and life cycle aspects or the specific environments they thrive in, can also be critical in pest control operations, emphasizing why option B is the best choice for identifying the Dark Mealworm.