Related Clues:

• Thorn in one's side
• Black fly, for example
• Flying nuisance
• Small distraction
• Wee pest
• Biting insect
• Part of a backyard swarm
• Swarming pest
• Tang anagram
• Insect
• Flying irritant
• Cause for slapping oneself
• Annoying type
• Component of a cloud, perhaps
• Hassle