Exodus 8:21

Swarms of flies -Generally, supposed to be the dog-fly, which at certain seasons is described as a plague far worse than mosquitos. Others, however, adopt the opinion that the insects were a species of beetle, which was reverenced by the Egyptians as a symbol of life, of reproductive or creative power. The sun-god, as creator, bore the name Chepera, and is represented in the form, or with the head, of a beetle.