All adult viviparae of Eucallipterus tiliae are alates (winged) The body is pale yellow with black markings, including lateral stripes on head and prothorax and two rows of black dorsal abdominal spots. The forewing has a dark front edge and dark spots at the tips of the oblique veins. The body length of winged female E. tiliae is 1.88 to 3 mm. Immatures are boldly spotted with black on yellow or orange.

Good photographs required.  Please also state the host species.

May be found on the leaves of Lime species.

Alate males and apterous oviparae develop in mid-late summer, earlier in the year than in most species.

It does not host alternate.

This species seems to be widespread in Britain. Numbers increase continuously over the growing season of the host plant, and because of the gregarious nature of these insects large aggregations are common.

Rarely recorded in Leicestershire and Rutland.

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