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Early stage fall armyworm larva |
Whorl-stage corn injury from fall armyworm |
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Dark spots (tubercles) on dorsal surface arranged in "trapezoid" or when near the tail, in a "square" pattern. Spots are darkened in photo for emphasis.
Fall armyworms can be distinguished from similar corn caterpillars by 2 physical characteristics:
Similar caterpillar species found on corn (left-right): armyworm, fall armyworm and corn earworm. The fall armyworm has an inverted "Y" pattern on the front of a dark head. |
An inverted "Y" pattern on the front of a dark head identifies the fall armyworm. |
Dark spots (tubercles) on dorsal surface arranged in "trapezoid" or when near the tail, in a "square" pattern. Spots are darkened in photo for emphasis. |
Photos and Text
Marlin E. Rice; Reviewed by Susan Moser, Herb Eichenseer and Laura Higgins
Reference
Bessin, Ric. 2003. Fall armyworm in corn. University of Kentucky Cooperative Extension Service. ENTFACT-110.
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