Historical clue formulations

• Insect that emerges en masse every 13 or 17 years — 2025-12-23
• Part of a summer swarm — 2025-01-16
• One coming out of its shell? — 2014-09-05
• Shrill flier — 2009-03-27
• Summer buzzer — 2007-03-28
• Noisy insect — 2004-12-27
• Harvest fly — 2002-10-27
• Cyclical thing — 2000-11-19
• Harvest fly — 1999-04-29
• Loud insect — 1996-11-25
• Harvest fly — 1995-06-16
• Bug with a loud love call — 1995-05-24
• Locust — 1993-12-16