Scientific Name

Therioaphis maculata

 

Hosts

Alfalfa and other legumes.

 

Symptoms

The spotted alfalfa aphid is about 2 mm long, pale yellow, and has four to six rows of dark spots on its back. It is usually found on stems and leaves on the lower portions of the plant. It sucks plant sap and secretes large amounts of honeydew. Its toxic saliva kills seedling plants and may lower the productivity of established fields.

 

Control

Please contact your local county extension office for current information.