STEM BORERS
STEM BORERS
STEM BORERS
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3. Life Cycle<br />
1-6 generations/year in China. 2-3 in<br />
Northeast and mid-downstream of Yellow<br />
River; 3-4 in mid-downstream of Yangtsz<br />
River; 5-6 in Huanan area.<br />
Overwinter as grown larvae in stems, ear<br />
centers and root stubbles of corns.