Dicyphus errans - Mid instar nymph
ID is a tad tentative, but I'm quite sure it should be okay. This is a 2mm Dicyphus nymph on Silene dioica invested with Aphids. It doesn't look at all like the usual nymphs of Dicyphus globulifer on Silene dioica and the colour pattern on head and antennae fits nicely with the documenten 5th instar nymphs of D. errans.
Here is a detail of the head:
Dicyphus errans is one of the small, slender plant bugs (Miridae) in the tribe Dicyphini. Unlike many of its congeners this species is not particularly bound to a limited selection of plants for its zoophytophagous development, other than that it also prefers hairy plants. Among others it is recorded from Urtica, Stachys, Galeopsis, Gerranium and Verbascum.