The alate Liosomaphis berberidis has the head, thorax, antennae and tips of legs darker than in the apterous viviparous female. Some tergites may have pale marginal and dorsal sclerites, sometimes fused into cross bands. L. berberidis apterae are greenish yellow or reddish orange (see pictures below) with a slight wax powdering.

Please provide good, close-up photographs.

The Barberry Aphid does not host alternate and lives on the underside of leaves of Barberry and Oregon-grape.

Summer and early autumn.

Liosomaphis berberidis is not attended by ants.

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

Status in Leicestershire and Rutland not known.

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