Related Clues:
- Flag day can be organised, not a persistent irritant
- Dynasty overthrown? Just a small irritant
- Part of a black cloud
- Insect pest
- Pesky little bug
- Little bug
- No-see-um pest
- Insect in a summer swarm
- Punkie or sandfly
- No-see-um, by another name
- Small fly of the family 'Culicidae'
- Bloodsucker found near stagnant water
- Pleasure-loving insect?
- Wander around, then rush off - that distresses cattle
- Fly in to sign a treaty