University of Nebraska-Lincoln
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University of Nebraska-Lincoln |
| Corn Blotch Leafminer | |
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| Description: | Larvae are legless maggots, pale green to yellow-white about ¼ inch long at maturity. |
| Damage Symptoms: | Larvae tunnel within corn leaves, consuming all the green tissue between the upper and lower leaf surface. Mines widen as the larva grows, resulting in a broad blotch in the last third to half of the mine. |
| Incidence: | At least 3 generations per year occur in Nebraska; leaf mines may be seen on whorl stage corn, as well as on corn in August. |
| Sampling Scheme: | Rarely an economic pest |
| Economic Threshold: | None available |
