In various papers published during the past five years the senior author has called attention to the injuries caused in grass lands and pastures by the numerous species of Jassidae, which swarm, often by millions to the acre, upon various species of grasses.
Proceedings of the Iowa Academy of Sciences
©1896 Iowa Academy of Science, Inc.
Osborn, Herbert and Ball, E. D.
"Contributions to the Hemipterous Fauna of Iowa,"
Proceedings of the Iowa Academy of Science, 4(1), 172-234.
Available at: https://scholarworks.uni.edu/pias/vol4/iss1/31