A Differential Grasshopper peeks out from its hiding place in a Bottle or Closed Gentian. September 5, 2020 Gail Batt A Differential Grasshopper peeks out from its hiding place in a Bottle or Closed Gentian. Wood Ducks float on a pond made green by algae. Some people call it pond scum. I don’t. I’ve been called pond scum and it hurt. It was true, but it still hurt. I’m still seeing lightning bugs or fireflies. I tend to use the term “firefly.” The common eastern firefly or big dipper firefly is the most common species of firefly in North America. Blazing Star is a star of this tiny prairie.