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Caterpillars on Wheat
1a. V-shaped sutures on top of head meet or almost meet (Go to 2).
1b. V-shaped sutures on top of head widely separated (Go to 3).
2a. Sutures on head bordered by brown bars and few, if any, other markings (Pale Western Cutworm).
2b. Head with markings other than above (Army Cutworm).
3a. Top of abdominal segment 8 with 4 distinct spots (Fall Armyworm).
3 b. Top of abdominal segment 8 with no distinct spots (Go to 4).
4 a. Top of head with reticulations (net like pattern) (Armyworm).
4b. Top of head without reticulations (Wheathead Armyworm).
by Phil Sloderbeck, Gerald Wilde and Leroy Brooks.
Adapted from: Wilde and Bell, 1980, CATERPILLARS In Field Crops, Bulletin 632, Agricultrue Experiment Station, Kansas State University, Manhattan, Kansas 66506. Line drawings by Jeanne E. Cardana.
For control information refer to the publication Wheat Insect Management for 1999 (Feb. 1999)
http://www.oznet.ksu.edu/library/ENTML2/Mf745.pdf
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