Possible Clues:

• The little nipper has hair - not his own - under his lug
• I grew agitated holding a small insect
• Insect; eavesdrop
• Crop-eating insect
• Caterpillar-eating insect
• On ahead of false hair makes one feel the pinch
• Insect heading off close to rug
• Insect has hair, not its own, on part of head
• Bug to eavesdrop
• Insect - eavesdrop