During the summer or early fall billions of Brine Flies occur along the shoreline of Great Salt Lake in Utah. The Brine Flies are the bulk food for many birds, spiders and many carnivorous insects such as Tiger Beetles. The species on this image, Westsalts Tiger Beetle, Cicindela hemorrhagica, was the most common species of Tiger Beetle along the shores of Great Salt lake.

The specimen on this image just captured a Brine Fly, Ephydra cinerea.