The Sloe Bug, also called the Hairy Shieldbug, has a maroon back with a dirty cream/light brown shield for most of the year and has black and white striped antennae.
Although associated with sloe berries, the bug uses many other trees/bushes and their fruits.
The hairiness which gives rise to the name Hairy Shieldbug is not always apparent; it depends on closeness and angle. The nymphs are also hairy.
The underside
The Sloe Bug darkens in autumn/winter and over-winters as an adult.