Historical clue formulations

• Irritating "cloud" — 2026-04-02
• Biting pests — 2026-01-11
• Creatures in God's third plague in Exodus — 2024-11-09
• Pesky summer swarm — 2024-10-28
• Summer pests — 2024-09-01
• Nipping pests — 2023-12-19
• Buzzy group — 2023-04-22
• Cloud on a summer day — 2022-08-21
• Cloud often seen in the summer — 2022-08-05
• Annoying summer swarms — 2020-09-28
• Pesky fliers — 2020-04-14
• Summer annoyances — 2020-03-07
• Cloud in the summer — 2017-08-16
• Small annoyances — 2017-07-18
• No-see-ums — 2014-09-14
• Campers' annoyances — 2014-08-16
• Flying pests — 2014-07-21
• Annoying buzzers — 2013-04-25
• Black cloud formers — 2012-03-25
• Swarms of them are called clouds — 2011-11-17
• Pesky swarm — 2010-05-25
• Buzzers — 2009-07-30
• Summer swarm — 2008-11-30
• Pesky swarm — 2006-10-23
• Itsy-bitsy biters — 2002-04-09
• Flock : birds :: cloud : ___ — 2002-02-02
• Airborne pests — 2001-08-14
• Pesky fliers — 2000-11-07
• No-see-ums — 2000-08-06
• Itty-bitty biters — 1999-06-22
• Biters — 1999-03-24
• Flying pests — 1998-09-01
• Pesky insects — 1997-04-21
• Winged pests — 1995-10-25