Which pest is commonly identified by its snout?

The rice weevil is commonly identified by its distinct snout, which is a characteristic feature of this species. This weevil has an elongated head and a pronounced snout that extends forward, making it easily recognizable. This feature is significant in differentiating the rice weevil from other beetles, as many insect species do not have a similar snout structure.

In the case of the other pests mentioned, while they may have their own unique characteristics, they do not typically have a prominent snout. The confused flour beetle, for instance, has a more oval body shape without the pronounced snout. Similarly, the granary weevil also exhibits a noticeable snout but is often confused with the rice weevil, although the key distinguishing features, such as coloration and body markings, separate them. The drugstore beetle lacks the snout entirely and is characterized by its cylindrical body shape, which distinguishes it further from the weevils.

By focusing on these distinguishing characteristics, it becomes clear that the rice weevil's snout is its most identifiable feature, making it the correct answer in this context.