. Insect pests of farm, garden and orchard . oung corn- egg punctures are mere slitsand do not seem to materially injurethe plant. The eggs hatch in fromseven to twelve days, and fromthem emerge small footless, dingywhite grubs, with chestnut-l^rownheads, of the appearance shownin Fig. 132. They at once beginfeeding on the tissues of the voung corn at the l)ottom of the egg. Fig. 131.—The maize bill-bug{Sphenophorus maidis Chittn.)—four tinges natural size.(After Kehy, U. S. Dept. Agr.) puncture, directing their burrowinward and downward into the tap-root. When they finish eating
. Insect pests of farm, garden and orchard . oung corn- egg punctures are mere slitsand do not seem to materially injurethe plant. The eggs hatch in fromseven to twelve days, and fromthem emerge small footless, dingywhite grubs, with chestnut-l^rownheads, of the appearance shownin Fig. 132. They at once beginfeeding on the tissues of the voung corn at the l)ottom of the egg. Fig. 131.—The maize bill-bug{Sphenophorus maidis Chittn.)—four tinges natural size.(After Kehy, U. S. Dept. Agr.) puncture, directing their burrowinward and downward into the tap-root. When they finish eating thetender parts of the taproot theydirect their feeding upwartl, con-tinuing until full grown, allowingthelower portion of the burrow tocatch the frass and burrowing of the taproot of the young growing corn-plant is disastrous to the root system; . .allowing it to die or become more or less dwarfed. Often theyoung larvae burrow into the heart of the plant and cut offthe growing bud, thus killing the top. The larvae become fullgrown early in August, when they are about four-fifths of an inchlong. The lar\ip, on finishing their growth, descend to the lowerpart of the burrow, to the crown of the taproot, cutting the pithof the cornstalk into fine shreds, with which they construct a cellwhere they inclose themselves for pupation. The pupae are tobe fountl in thes
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1915
