Among the well-known insect pests with which the farmer must contend are the May beetles which in the larva stage, as white grubs, do heavy damage to the grasses, corn, potatoes, strawberries and garden crops. There are about one hundred species of May beetles known to occur in the United States all of which belong to the genus Phyllophaga. Forbes in examining 114,493 May beetles in Illinois found 34 species, but less than half of these were sufficiently abundant to be of serious economic importance.
Proceedings of the Iowa Academy of Science
©1922 Iowa Academy of Science, Inc.
Jaques, H. E.
"Brood A of the May Beetles Extends Its Range in Iowa,"
Proceedings of the Iowa Academy of Science, 29(1), 163-164.
Available at: https://scholarworks.uni.edu/pias/vol29/iss1/41