Russian wheat aphid
- Adult: Small, lime green, spindle-shaped aphid with short antennae.
- Nymphs: Like adults but smaller and wingless.
- Eggs: Females do not lay eggs but give birth to live young.
Timing of damage: All growing season but particularly spring and fall
Type of damage: Streaked and/or rolled leaves and fishhooked heads.
Scouting: Check at least 10 plants in four areas of the field for aphid presence.
Economic threshold: Aphids present on at least one in 10 plants in more than one area of the field.