Arocatus longicepsArocatus longiceps, the plane tree bug, is a species of seed bug in the family Lygaeidae, found mainly in Europe.SubspeciesThese five subspecies belong to the species Arocatus longiceps:Arocatus longiceps fuscipes Picco, 1920Arocatus longiceps longiceps Stal, 1872Arocatus longiceps nigrirostris Picco, 1920Arocatus longiceps sanguineus Picco, 1920Arocatus longiceps thoracicus Picco, 1920