Which grain pest is known for having long snouts and jaws (mandibles)?

The granary weevil is recognized for its distinctive long snout, which is a characteristic feature of this particular species. This elongated snout plays a critical role in its feeding and reproductive behavior; the female uses it to bore holes into grains to lay eggs. Once the eggs hatch, the larvae feed from the inside of the grain kernel, which further protects them from desiccation and predation.

Understanding the anatomy of the granary weevil provides insight into how it has adapted to its environment. In contrast, other pests like rice weevils also have a snout, but the granary weevil is particularly known for its pronounced jaw structure relative to its size, which allows it to effectively consume what is primarily stored grains. Flour beetles and silkworms do not share this characteristic as they are from completely different classifications of insects and have different feeding habits and anatomical structures.

This focus on the granary weevil's morphology and behavior underscores its identification in pest management and control strategies, especially in agricultural settings where grain storage is crucial.