Leafhoppers rival the diversity of butterfly colors but because of their small size, they rarely get credit for their beauty! There are nearly 2,500 species in North America and 19,400 described worldwide. Leafhoppers feed by sucking the plant contents with their straw-like beaks. Most Leafhoppers are host specific and many are specific to the part of the plant as well. The majority of them overwinter as eggs but there are a few that wait out the winter as adults.
Illinois Natural History Survey has a bibliography of literature on leafhoppers