Answer:
Although I'm not an insect, some people found me very difficult to exterminate. They called me something like 'insane priest.' The first half of my name means the same as 'scrape,' & my last three letters are a metal. Who am I?
A tiny bead, like fragile glass, strung along a cord of grass.
A box without hinges, lock or key, yet golden treasure lies within.
What has two spines and a lot of ribs, and carries much but never moves?
What travels from house to house and is sometimes narrow and sometimes wide but always stays outside?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?