A largely pale green aphid around 3 mm long with black bands above the 'knees' and dark 'feet'.

Infests the flowers and foliage of hellebores.

Spring.

A sap feeding aphid and one of the most important pests of hellebores.

Widespread in Britain and fairly frequent in areas where the host plants are found.

Fairly frequent in areas where the host plants are found in Leicestershire and Rutland.

https://influentialpoints.com/Gallery/Macrosiphum_hellebori_Hellebore_aphid.htm