Macrosiphoniella tanacetaria apterae are large wax powdered green or pinkish-brown aphids.  For a more detailed description of this species please use the ‘Further info:’ link below.

Please add good quality images to support your record, and also state the host plant.

The principal host plant of Macrosiphoniella tanacetaria is Tansy, but the range of reserve hosts seems greater than in most Macrosiphoniella species.

Summer and early autumn.

Not ant attended.

True status in Britain is difficult to determine due to lack of records.

Rarely recorded in Leicestershire and Rutland.

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