Rain and the moisture bring out the tiny little bloodsuckers. They come in droves. It stings and itches. If you stay outside for too long, it feels like they’ve got into your ears, under your eyelids and under your skin. When the sun shines, the dragonfly hovers and its wings glitter like gold in the sunlight.  Black flies (Simuliidae ) are food for dragonflies (Odonata) and other animals. The circle is complete.