Adult apterae of Chaitophorus salijaponicus subsp. niger are usually uniformly blackish-brown. 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.

Aphids of this species live separately or in small colonies on the leaves of narrow-leaved Willows (Salix spp.).

Oviparae and males occur in September-November.

Only rarely visited by ants.

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

Rarely recorded in Leicestershire and Rutland.

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