[2] Megoura viciae was described by English entomologist George Bowdler Buckton in 1876.

Towards the rear of the body are large crescent-shaped black sclerites which are in front of the siphunculi.

Dependent on the stage in their lifecycle M. viciae may be winged or wingless.

Eggs are laid at the base of the host plant and these hatch in the spring.

[4] In the autumn the aphids move on to the seed pods of the host plant.