Possible Clues:

• Beetle takes tea with iron in it
• Cause irritation by rubbing head of riled six-footer
• Beetle an irritant — in saucepan once?
• Rubber beetle
• Rubber insect
• Beetle hunter using wrong end of forceps
• Beetle can make one fret, right?
• Variety of beetle
• Irritating beetle?
• Wear royal scarab