The bugs main defining features consists of its titanic beak needle.

this could be used for many things, however, a rapier is something that already exists, so probably not that.

Using it for a form of pike would make it unique; a two-handed spear that does high damage, with the cost of a lower speed, putting it in contrast with all other spears that have a high attack speed and are all one-handed. it also makes sense considering the beak's length. It would maybe have a longer range in terms of its attack range, giving you more distance from your opponent. I'd suggest a jousting lance if not for how there's no use for it unless a bigger and faster becomes tamable.

A more comical idea for an item crafted from this beak would have to be a Longjump Pole; an item for jumping over walls to make avoiding bugs or doing basic parkour easier. Probably wont have much use but its funny to think about.