Saw a local tv news article and read something in newspaper about these things. They have normally been in the southern states but with weather fronts, and our rain and humidity in NE Ohio, they have been noticed causing several brown lawns. They are larva of some type of moth. They live just under the ground in any lawn eating grass roots and in a short time leaving a totally brown yard! Seems only thing to knock them out is spraying the entire lawn, once identified, with a strong, toxic pesticide(neither story mentioned what irradicates them). Sure to become a big problem in the future.