Exodus 8:21-31
Else, if you will not let my people go, behold, I will send swarms of flies on you, and on your servants, and on your people, and into your houses: and the houses of the Egyptians shall be full of swarms of flies, and also the ground where on they are.
Nave's Topical Index—AKJV

Psalm 78:45
He sent divers sorts of flies among them, which devoured them; and frogs, which destroyed them.
Nave's Topical Index—AKJV

Psalm 105:31
He spoke, and there came divers sorts of flies, and lice in all their coasts.
Nave's Topical Index—AKJV