This section is from the book "The Gardener's Monthly And Horticulturist V24", by Thomas Meehan. See also: Four-Season Harvest: Organic Vegetables from Your Home Garden All Year Long.
This is very destructive to apple trees in Ohio. Mr. Robert Steele thus characterizes it in a paper before the Montgomery County, Ohio, Horticultural Society: "The pupa, like the worm, is white, but the beetle is of a bronze color. This beetle deposits its eggs generally on rough places, but sometimes on smooth, healthy bark. It is diurnal in its habits, and begins to make its appearance in May, continuing to deposit eggs through the whole summer. They soon hatch, are found in clusters of about a dozen, are about one-tenth of an inch in length at first, but soon grow to be a quarter of an inch long. About the middle of August they change into the pupa state; by September the beetles are well formed, and ready to leave the tree, probably to hibernate under ground".