“Els, if thou wilt not let my people goe, beholde, I will send swarmes of flies vpon thee, and vpon thy seruants, and vpon thy people, and into thy houses: and the houses of the Egyptians shall bee full of swarmes of flies, and also the ground whereon they are.”
1611 King James Version (KJV)
8:21 Flies - Or insects of various kinds; not only flies, but gnats, wasps, hornets; and those probably more pernicious than the common ones were.