Those bugs are called leafhoppers. They’re about the size of a grain of rice and always present in your lawn. They typically hop from blade to blade sucking out the juices. You can tell by the small yellow spot in the middle of the blade. They also excrete a sap-like substance called honeydew which sometimes appears as a shiny spot on the blade.
Leafhoppers do very little damage. Sure, a huge infestation might give your lawn a slightly pale appearance, but because the damage is typically short term, superficial, and very short lived, we do not recommend treatment. But here’s some Leafhopper factoids for all you science buffs: Leafhoppers spend the winter in debris and thatch and emerge in mid spring. Females lay eggs in the early summer, which hatch within two weeks.