. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 12. warm, damp box made no attempt to enter the soil until from fifteen to twenty-nine hours old. Young, apparently freshly hatched larvte in the field were often found in the soil near to the eggshell fi'om which they had pr()hal)ly emerged. Tliose larva* observed were not seen to feed until at least twenty-four hours had elapsed, and then a slight discoloration began to show through the thin skin. Fine particles of dirt were found at this time in the digestive organs. The larvae are very sluggish in their movem
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 12. warm, damp box made no attempt to enter the soil until from fifteen to twenty-nine hours old. Young, apparently freshly hatched larvte in the field were often found in the soil near to the eggshell fi'om which they had pr()hal)ly emerged. Tliose larva* observed were not seen to feed until at least twenty-four hours had elapsed, and then a slight discoloration began to show through the thin skin. Fine particles of dirt were found at this time in the digestive organs. The larvae are very sluggish in their movements, unless turned out on a dry, Avarm soil in the sun, when they hasten to burrow beneath the surface, going only a short distance and soon making a tiny cell in the earth, where they curl up in the characteristic manner of white grubs. The life history from the middle of May until the last of October is not yet definitely known. The last of October larvae were found in the fields in considerable numbers in the same positions as those seen in the spring; also in the mother cane, upright stubble cane, and even at the bases of growing cane stalks. Quite a number of the larva^ are now in our breeding cages in Washington (April 1), but none have as yet transformed. Many of those dug out of the cane fields in October had formed earthen cells of considerable solidity and were evidently full grown. These cells were usually placed 5 to C inches below the surface and often close to the canes. A few were found in the mother cane. Some were dis- covered at the summit of stubble cane; 3 to 4 inches beneath the surface, where they had apparently fed for most of their lives (see fig. 4). None of the cells found in the cane fields had parasites in them, l)ut Erax lateralis larvae, one to two- thirds grown, were several times found near injured white grubs. But two pupa? were found in the fields, and from one of these, ear\y in November, there emerged an adult of TJgyrus rugiceps. The other
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