Exodus 8:21

for, if thou art not sending My people away, lo, I am sending against thee, and against thy servants, and against thy people, and against thy houses, the beetle, and the houses of the Egyptians have been full of the beetle, and also the ground on which they are.

Psalm 78:45

He sendeth among them the beetle, and it consumeth them, And the frog, and it destroyeth them,

Psalm 105:31

He hath said, and the beetle cometh, Lice into all their border.

Isaiah 7:18

And it hath come to pass, in that day, Jehovah doth hiss for a fly that is in the extremity of the brooks of Egypt, And for a bee that is in the land of Asshur.

Treasury of Scripture Knowledge

Summary

Else, if thou wilt not let my people go, behold, I will send swarms of flies upon thee, and upon thy servants, and upon thy people, and into thy houses: and the houses of the Egyptians shall be full of swarms of flies, and also the ground whereon they are.

Bible References

Swarms

Psalm 78:45
He sendeth among them the beetle, and it consumeth them, And the frog, and it destroyeth them,
Psalm 105:31
He hath said, and the beetle cometh, Lice into all their border.
Isaiah 7:18
And it hath come to pass, in that day, Jehovah doth hiss for a fly that is in the extremity of the brooks of Egypt, And for a bee that is in the land of Asshur.