Pest Profile

English grain aphid
Sitobion avenae
  • English grain aphid nymph
  • English grain aphid nymph

Pest Description

Bright green with long black legs and black cornicles. English grain aphid is more common late in the growing season, and prefers to feed on the awns and wheat heads, and can result in damaged and damaged kernals. English grain aphid feeding typically does not cause direct damage, but can have an economic impact indirectly, by transmitting the virus Barley Yellow Dwarf Virus.

Source of information

online (, modified from Department of Entomology (University of Nebraska), iWheat (Wheat Production and Pest Management Guide)

Pest Diagnostics


Pest photo source

Wendy Johnson, KSU Entomology

Plant Diagnostics


Plant diagnostic image(s) source

iWheat (Wheat Production and Pest Management Guide)