Pithanus maerkelii is a species of plant bug in the family Miridae.

[1][2][3][4] It is found in Europe, but occurs in the Mediterranean basin only on the western northern edge.

To the east spreads across the Palearctic to European Russia and Ukraine.

[1] Pithanus maerkelii is found on Poaceae, Cyperaceae and Juncaceae- Agrostis, Festuca, Nardus , Deschampsia , Carex , Scirpus, Juncus.

They suck on the stalks (knots) and also on the ears (ovules).