The Leafhoppers are a large species group in the US. They are in the order Hemiptera. The family is Cicadellidae with 18 subfamilies. This little egglaying female is in the Cicadellinae subfamily with about 90+ members in that subfamily in North America. Many of them are beautifully colored. The food of most species is quite specific (sort of like butterfly larvae). I don't know if they only lay eggs on the foodplant. Many are important plant pests and some carry plant diseases as well.

This one is close to the genus Oncometopia but I did not collect this busy creature. I am amazed by the number of eggs she is putting out. And by the complete lack of any color camouflage. These things were extremely white. Also note the suspiciously attentive Dipteran to the right. Likely this is some fly that is parasitic on the hopper egg mass. But that is a guess.

Sometimes impressively colorful up close. These were all over the new prairie at Craighead Forest park. They are in the genus Cuerna.

A blue-green to blue species in the broad-headed hoppers. This is another Oncometopia species, O. orbona.

This is likely the same species as above. Found in March on my emerging oaks. Would slip quickly around the stem when approached.  

A dark hopper that is in the other superfamily among the hopper relations. This is a planthopper in the Fulgoridae family.  Most also feed on plant liquids. Much smaller group than the leafhoppers in numbers and occurrence, they are often larger in size. This Darth Vader looking species is one of the darkest eastern species and is Poblicia fuliginosa.