. Annual report of the North Carolina Agricultural Experiment Station . Figure 47. Corn plant showing injury to tap-root by larva. 76 The Bulletin of its tunnel where it is feeding. In the insectary the larvae in thefirst day or two after hatching are capable of constructing an enormouslength of tunnel, comparatively speaking. It is nothing unusual forone of these small larva? less than two milimeters in length to burrowfour or five times the length of a section of cornstalk seventy-five mili-meters in length in a single day, or more than one hundred and fiftytimes its own length. The turning
. Annual report of the North Carolina Agricultural Experiment Station . Figure 47. Corn plant showing injury to tap-root by larva. 76 The Bulletin of its tunnel where it is feeding. In the insectary the larvae in thefirst day or two after hatching are capable of constructing an enormouslength of tunnel, comparatively speaking. It is nothing unusual forone of these small larva? less than two milimeters in length to burrowfour or five times the length of a section of cornstalk seventy-five mili-meters in length in a single day, or more than one hundred and fiftytimes its own length. The turning and twisting habits of the prepupal stage of the larvaeis given in the discussion of the formation of the pupal cells. Thelarva? as they prepare to molt have the same habit of turning about intheir burrows. This most certainly helps them very much in getting-rid of the old cast skin, as the larvae usually work themselves forwardat the same time they are turning; thus they travel in a spiral, andthe cast skins are gradually worked backward and left eventually inthe tu
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