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Figure

These photos taken with an electron microscope show the features that distinguish eggs of Helicoverpa (Heliothis) from cabbage looper eggs. Helicoverpa (Heliothis) eggs (left) are more spherical and have thick ridges radiating like ribs from top to bottom. Looper eggs (right) are more flattened and have a larger number of much finer ridges.

Illustration from Integrated Pest Management for Cotton in the Western Region of the United States. UC ANR Publication 3305.

Statewide IPM Program, Agriculture and Natural Resources, University of California
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