What color are the bodies of adult granary weevils?

The bodies of adult granary weevils are typically reddish brown or black, which is a distinguishing feature of this pest. This coloration helps them blend in with their surrounding environment, making it more challenging for both natural predators and humans to spot them. Granary weevils, specifically, are often seen in stored grains, where their coloration may also mimic the debris and materials they inhabit.

In contrast, the other choices describe colors not associated with granary weevils, making them improbable for this pest. Bright green or yellow, dark blue, and pale white do not match the physical characteristics of adult granary weevils—these colors are often more generalized descriptors for different insect groups or misidentified species. The reddish brown or black coloring is a key aspect to recognize when identifying granary weevils in the context of pest management strategies.