seedcorn maggot adult 1 copy.jpg

Seedcorn maggot fly


  • Adult: Small, gray, bristly fly with black legs. It is less than ¼" long.
  • Larvae: White to yellow-white maggot with tough skin, pointed head and round tail.
  • Eggs: Laid singly or in clusters in moist soil. Each female lays an average of 270 eggs. 

Timing of damage: VE to V2

Type of damage: Maggot burrows into seeds and destroys the germ.

Scouting: Dig up ungerminated seeds and check for maggots.

Economic threshold: None established. Use of a seed treatment is advised.

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