Insect pests of farm, garden and orchard . ich the beetle has beenobserved feeding in large numbers on clover and weeds during thelate fall of the previous year. The liberal use of manure and fer-tilizers, and thorough cultivation will, of course, be of service inenabling the plants to withstand attack. The Southern Corn Root-worm * Closely related to the last species, but with somewhat differenthabits, the Southern Corn Root-worm is frequently injurious tocorn from Maryland and southern Ohio southward. * Diabrotica \2-punctnta Oliv. Family Chrysomelidoe. INSECTS INJURIOUS TO CORN 159 The adul
Insect pests of farm, garden and orchard . ich the beetle has beenobserved feeding in large numbers on clover and weeds during thelate fall of the previous year. The liberal use of manure and fer-tilizers, and thorough cultivation will, of course, be of service inenabling the plants to withstand attack. The Southern Corn Root-worm * Closely related to the last species, but with somewhat differenthabits, the Southern Corn Root-worm is frequently injurious tocorn from Maryland and southern Ohio southward. * Diabrotica \2-punctnta Oliv. Family Chrysomelidoe. INSECTS INJURIOUS TO CORN 159 The adult beetle is of a bright green marked with twelve blackspots, which have given it the name of 12-Spotted Cucumber-beetle to distinguish it from the Striped Cucumber-beetle (page 379),with which it is often associated feeding on cucurbs. It is some-what larger and more robust, than D. longicornis, and is almostomnivorous in its food habits, feeding upon the foliage and flowersof a long list of forage and garden crops, to which it often does. Fig. 118.—The southern corn root-worni: a, egg; b, larva; c, work of larvaat base of cornstalk; d, pupa; c, beetle—all much enlarged except c.(After Riley.) considerable damage. Beans arc frequently injured in much thesame way as corn and the roots of melons and other cucurbs areoften so riddled by the larvae as to kill the plants. Injury to corn is done by the larvtc in the spring,when they feedupon the roots while the corn is but a few inches high, bore into thecrown, and boring into the base of the stalk through the youngleaves eat out the bud. The latter injury often seems to bemore serious to corn than the injury to the roots, and has giventhe insect the common local name of bud worm, Avhich isunfortunately applied to several other insects which do similar 160 INSECT PESTS OF FARM, GARDEN AND ORCHARD injury. Larvae have been found attacking wheat, rye, millet andJohnson grass in a similar way, the beetles seeming to be attractedto fi
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