Possible Clues:

• Insect pest that damages crops
• Beetle sometimes found in flour
• Beetle with an elongated snout
• Small, nasty tailless beetle
• We live with small beetle that feeds on grain and tree-bark
• Small mostly disgusting beetle
• The little six-fifty is so grubby (6)
• You and I confront iniquitous little pest
• What's small and mostly harmful?
• We get nasty beetle