Immature Myzocallis schreiberi are whitish to pale straw yellow with four longitudinal rows of dark spots and long body hairs. Winged adult viviparae of M. schreiberi are pale yellow, with the head and the thorax slightly darker. The prothorax often has short lateral streaks of dark pigment. The dorsal abdomen has small transversely oval, dark spinal spots. For further information about this species follow the ‘Further info:’ link below. The body length of Myzocallis schreiberi apterae is 1.3 to 2.2 mm.

Unless identified by a recognised expert, a photo is required. If the photo doesn't show the key ID features, then in the comments box describe the size and identifying characters you have observed.

On Holm Oak (Quercus ilex), on the underside of the leaf

Viviparous forms can be found throughout the year.

Associated with Holm Oak.

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

Status in Leicestershire and Rutland not known.

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