. Insect pests of farm, garden and orchard . Fig. 127.—a, h, c, varieties of the larva of the larger corn stalk-borer; d,third thoracic segment; e, eighth abdominal segment; /, abdominalsegment from side; g, same from above—enlarged. (After Howard,U. S. Dept. Agr.) stalks, tunneling- them between the second joint and the ground, and l)econi(> full grown aboutharvest time when they gt)into winter quarters in theroot as above described. Control.—It has beenobserved that late plantedcorn is much less injuredthan that planted early,but as it is more seriouslyinjured by some other pests,< lat
. Insect pests of farm, garden and orchard . Fig. 127.—a, h, c, varieties of the larva of the larger corn stalk-borer; d,third thoracic segment; e, eighth abdominal segment; /, abdominalsegment from side; g, same from above—enlarged. (After Howard,U. S. Dept. Agr.) stalks, tunneling- them between the second joint and the ground, and l)econi(> full grown aboutharvest time when they gt)into winter quarters in theroot as above described. Control.—It has beenobserved that late plantedcorn is much less injuredthan that planted early,but as it is more seriouslyinjured by some other pests,< late planting may not beadvisable. Where corn has beenseriously injured, the- oldstalks or butts should bedragged off the field and. Fig. 128.—The larger corn , female; 6, wings of male; r, pupa—all somewhat enlarged. (.\fterHoward, U. 8. Dept. Agr.) burned late in the fall, thus destroying the over-wintering borers. INSECTS INJURIOUS TO CORN 175 When corn is stripped for fodder, the stalks left standing and theland sown in small grain, the most favorable conditions arcallowed the borers for safely passing the winter and developinginto moths which will fly to new fields in the spring. A simple rotation of crops will also lessen injury considerably,as Dr. L. 0. Howard has observ^ed that where fields which hadbeen in corn the previous year were damaged 25 per cent, thoseplanted on sod land were damaged but 10 per cent, though reason-ably close to land which had been in corn. Bill-bugs * Throughout the South and often in the more Northern States,.Canada, and the West the bill-bugs sometimes become seriousenemies of young corn-plants. They are called bill-bugs onaccount of the prolongation of the head,
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