1、Head In the Curculionoidea the head is more or less prolonged forward into a snout;the mouthparts are reduced in size and are located at the tip of the snout,and the antennae arise on the sides of it The families in the Curculionoidea are sometimes placed in a separate suborder,the Rhynchophora. 1、Head In the Curculionoidea the head is more or less prolonged forward into a snout; the mouthparts are reduced in size and are located at the tip of the snout, and the antennae arise on the sides of it The families in the Curculionoidea are sometimes placed in a separate suborder, the Rhynchophora