An aphid?

An aphid?

Observation - An aphid? - UK and Ireland. Description: Exploring here the interactive key in the National Barkfly Recording Scheme website: With wings longer than the abdomen and only one triangular cell as marked, this individual appears not to be a barkfly but an aphid, or possibly a psyllid.

Exploring here the interactive key in the National Barkfly Recording Scheme website: With wings longer than the abdomen and only one "triangular cell" as marked, this individual appears not to be a barkfly but an aphid, or possibly a psyllid.