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A small colorful fly with yellow body, striped wings, and large reddish eyes on a greenish surface.

Published: May 1, 2026

2026 Wheat Stem Maggot Detection and Risk to Cover Crop-to-Corn Systems

Silvana Paula-Moraes - Extension Entomologist, Justin McMechan - Crop Protection and Cropping Systems Specialist, Talon Mues - Extension Educator, Jenny Brhel - Extension Educator, Travis J. Prochaska - Extension Educator, Nicole Luhr - Extension Educator, David S. Wangila - Extension Educator, Aaron Nygren - Extension Educator, Ron Seymour - Extension Educator

corn field with symptoms of infestation

Published: March 31, 2026

2026 Alert System for Wheat Stem Maggot in Cover Crop-to-Corn Systems

Silvana Paula-Moraes - Extension Entomologist, Justin McMechan - Crop Protection and Cropping Systems Specialist, Talon Mues - Extension Educator, Jenny Brhel - Extension Educator, Travis J. Prochaska - Extension Educator, Nicole Luhr - Extension Educator, David S. Wangila - Extension Educator, Aaron Nygren - Extension Educator, Ron Seymour - Extension Educator

Collage showing wheat stem maggot damage in corn: close-up of a larva on a corn stem, a row of young corn plants in residue, and mature plants with delayed ear development. Text overlay reads ‘Tracking Wheat Stem Maggot Damage in Corn.'

Published: September 12, 2025

Wheat Stem Maggot in Corn: Field Observations and Follow-Up

Justin McMechan - Crop Protection and Cropping Systems Specialist, Aaron Nygren - Extension Educator, Talon Mues - Extension Educator, Jenny Brhel - Extension Educator

a row of underdeveloped corn next to normal row

Published: June 12, 2025

Wheat Stem Maggot: A Cover Crop to Corn Pest

Justin McMechan - Crop Protection and Cropping Systems Specialist, Jenny Brhel - Extension Educator, Aaron Nygren - Extension Educator, Julie Peterson - Extension Entomologist, Travis J. Prochaska - Extension Educator, Ron Seymour - Extension Educator, Talon Mues - Extension Educator

Wheat stem maggot

Published: June 10, 2022

Wheat Disease Update — June 10

Stephen Wegulo - Extension Plant Pathologist

Figure 1. Seasonal ecology of wheat stem maggot (Allen 1933) overlaid on 2017 field issues. Arrows indicate likely source of infestation started with adult movement in the spring.

Published: April 25, 2018

Wheat Stem Maggot Adult Monitoring: A Pest of Cover Crop-to-Corn Transitions

Justin McMechan - Crop Protection and Cropping Systems Specialist, Robert Wright - Extension Entomologist, Gabriela Inveninato Carmona - Entomology Graduate Student

Wheat stem maggot fly

Published: June 22, 2017

Adult Emergence of Suspected Wheat Stem Maggot from Infested Corn Plants

Justin McMechan - Crop Protection and Cropping Systems Specialist, Robert Wright - Extension Entomologist, Gabriela Inveninato Carmona - Entomology Graduate Student