. Controlling peach insects in Illinois [by] S. C. Chandler [and] W. P. Flint. Insect pests; Peach. 12 ILLINOIS NATURAL HISTORY SURVEY CIRCULAR 33 grubs, which make a series of tunnels just beneath the bark, fig. 9. At least two generations occur each year in southern Illinois. ; TERRAPIN SCALE Lecanium nig 7^0 fas datum Perg. Appearance and type of injury.—This brown, hemispherical scale, less than one-eighth inch across, is occasionally found covering twigs and small branches of peach trees in southern. Fig. 10.—Terrapin scale adults on peach twigs. About six times life size.* Illinois, fig,
. Controlling peach insects in Illinois [by] S. C. Chandler [and] W. P. Flint. Insect pests; Peach. 12 ILLINOIS NATURAL HISTORY SURVEY CIRCULAR 33 grubs, which make a series of tunnels just beneath the bark, fig. 9. At least two generations occur each year in southern Illinois. ; TERRAPIN SCALE Lecanium nig 7^0 fas datum Perg. Appearance and type of injury.—This brown, hemispherical scale, less than one-eighth inch across, is occasionally found covering twigs and small branches of peach trees in southern. Fig. 10.—Terrapin scale adults on peach twigs. About six times life size.* Illinois, fig, 10. In summer, leaves and fruit may be covered with sticky honeydew on which grows a sooty black fungus. Control.—Oil sprays having a strength of at least 4 per cent actual oil applied to the dormant tree are effective for control of this scale. Either miscible oils or oil emulsions, if used at a strength of 4 per cent, are satisfactory. Lime sulfur sprays will not control terrapin scale, usually of little importance. Life history.—Fertilized females on the bark of small branches and twigs carry the scale over the winter. The females resume feeding early in spring. In late May or June they produce young, which one or two days after hatching crawl from under the females to the leaves, where they feed for a month, when the males mature as two-winged insects and mate with the females, dying soon after. The females continue feeding until cold weather. *lllustr.\tii)ii t'onrtcsy l". S. Hc'iiiirtmciit of Agriculnin'. of Kntoinology and I'lnnl Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Chandler, Stewart Curtis, 1889-; Flint, W. P. (Wesley Pillsbury), 1882-1943. Urbana
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