The Eighth Plague against Egypt.

The Plague of the greatest Locust Swarm of all time.

Resources used:

The Faithlife Study Bible

Noel D. Osborn and Howard A. Hatton, A Handbook on Exodus, UBS Handbook Series (New York: United Bible Societies, 1999), 241–242.

Victor Harold Matthews, Mark W. Chavalas, and John H. Walton, The IVP Bible Background Commentary: Old Testament, electronic ed. (Downers Grove, IL: InterVarsity Press, 2000), Ex 10:19.

https://www.smithsonianmag.com/smart-news/giant-locust-swarms-could-expand-to-new-areas-with-climate-change-study-suggests-180983800/

https://www.historynet.com/1874-the-year-of-the-locust/