What is the typical appearance of the Braula coeca pest?

Braula coeca, commonly known as the bee louse, has a unique appearance that distinguishes it from other pests. This pest is often compared to varroa mites in terms of its size and color, giving it a similar, albeit more elongated and less robust, form. Both Braula coeca and varroa mites are small and can be overlooked due to their diminutive size, but the bee louse is typically lighter in color and lacks the characteristic flattened shape of the varroa mite.

While the bee louse may not have the same direct impact on bee health as some other pests, it can still affect bee behavior and hive dynamics. Recognizing its similar appearance to varroa mites helps beekeepers identify potential infestations and understand the differences between various pests. This comparative appearance makes option D the most accurate representation of Braula coeca's typical look.