How weevils work

This guy is really tiny -- the flower is less than an inch across -- but he presented the opportunity to show the strange construction of weevil antennae. Sometimes the antennae are seen extended near the base of the snout but sometimes they are far longer and extend from the tip of the snout. What's going on here? As you can see, their antennae have a kind of elbow. Added to that is the fact that their legs are uniquely attached, by a screw fitting rather than the ball-and-socket of other creatures. You can look it up.