Sunflower Seed Maggot Fly

Natural Habitat

Found in North American meadows, gardens, and agricultural fields, particularly wherever host plants like sunflowers or lettuce are present.

Diet & Feeding

Larvae (maggots) feed internally on the stems and pith of host plants like sunflowers. Adults feed on nectar and honeydew.

Behavior Patterns

The wings have distinct F-shaped dark markings. Females deposit eggs in plant stems. They are known for their 'strutting' behavior on leaf surfaces while defending territory or seeking mates.

Risks & Benefits

Generally considered a minor agricultural pest as larval tunneling can weaken plant stems. They pose no physical risk to humans but can affect crop yield in large numbers.

Identified on: 6/30/2026