Aphis ilicis apterae are dark olive-brown, reddish-brown or greyish-brown. For a more detailed description of this species please use the ‘Further info:’ link below.

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Aphis ilicis lives in dense colonies on young shoots and undersides of young leaves of Holly. Attacked leaves curl towards their undersides. Later in the year, when the leaves have matured, aphids can be found colonizing the berry petioles. It is rare to find any species other than Aphis ilicis on Holly.

Sexual forms with winged males are recorded from July onwards. 

This species is usually attended 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/Aphis_ilicis_holly_aphid.htm