Why Do Weevils Have Long Snouts?

It uses its enormous elongated snout, or rostrum, as a weapon, engaging in a kind of jousting match with other males. In females, the snout makes up about a third of the weevil's body length and is used to drill holes into wood to lay eggs.

Do all weevils have snouts?

All but the primitive weevils have elbowed antennae, extending from the snout. ... While it may appear by its shape that a weevil's long snout is for piercing and sucking (like true bugs), it is not. The mouthparts are quite small and located at the end of the rostrum, but are designed for chewing.

What is the purpose of weevils?

The boll weevil (Anthonomus grandis) attacks cotton crops; it lays its eggs inside cotton bolls and the larvae eat their way out. Other weevils are used for biological control of invasive plants.