Calocoris alpestris is a species of bug in the subfamily Mirinae of the family Miridae.

It is normally found in meadows, damp woodlands and in deciduous forests, preferably in the mountains (up to 2000 m).

These large size plant bugs are entirely green, with a very elongate shape.

[2][3] This species is very similar to Calocoris affinis, but it shows a gray-whitish membrane, with darker veining and the 1st antennal segment is usually dark in the basal part.

[2] These bugs are polyphagous, feeding in many different plant species, mainly on Urtica dioica (juices) and Heracleum sphondylium (nectar).