An aphid with a flattened rounded body, associated with sedges.  The adult apterae are greenish with darker spots or blackish-brown. The legs, siphons and antennae are pale, and it is covered in dark bristly hairs.  The eyes are on short stalks projecting sideways. 

Good photos in the field, or from a specimen.

Sedges - marshland, wet places.

Rare, or rarely recorded - the 2026 record from south Leicester is believed to be the first record for VC55

https://influentialpoints.com/Gallery/Caricosipha_paniculatae_stalk-eyed_sedge_aphid.htm