Length around 4 mm. This genus contains three similar species which are often found on umbellifers. They generally have dark antennae. Although external characters are useful, some specimens cannot be reliably identified without dissection. O. campestris is usually green or green-tinged and is the smallest and most oval Orthops species. Note the short antennae; the 3rd segment is much shorter than the head width.

Orthops kalmii and Orthops basalis.

Neolygus viridis is superficially similar but is larger, with longer antennae.

Often associated with Wild Parsnip, the foodplant.

Adult: all year.

Adults overwinter and mate in the spring; the new generation is complete from July onwards.

A widespread and fairly common bug in Britain.

Fairly frequent in Leicestershire and Rutland.