Harpocera thoracica is a species of bugs from Miridae family.

This rather common species could be found anywhere in Europe except for the Baltic states, Canary Islands, Finland, Iceland, Malta, and Russia.^[1]

These bugs inhabit hedge rows and sunny, dry areas with oaks.^[2][3]

Harpocera thoracica can reach a length of about 6–6.4 millimetres (0.24–0.25 in) in males, of 6.4–6.8 millimetres (0.25–0.27 in) in females.^[3][4] An evident dimorphism exists between the males and the females of this species. Males show a more elongated body, longer tibiae and a characteristic inflated 2nd antennal segment.

The basic body color of these bugs ranges from black, dark brown or orange to pale brown.^[4] The tips of hemelytra are black, surrounded by white markings. Legs are yellowish-brown and antennae are brown.

The nymphs have dark hairs and thickened basal antennal segments. They are reddish or pinkish-white-coloured.^[2][4]

Adults can be found from late April or May to the middle of June at the latest and live for only one month, with females living a bit longer.^[4] These zoo phytophagous bugs suck on buds, feed on pollen and on juices of oaks (Quercus robur), feed on nectar of Anthriscus sylvestris and occasionally hunt small insects, especially aphids.^[3][5] After the eggs have been deposited, they remain for 10 months.^[6] After the species spend their time in the egg, larvae appear. The larva development takes no more than two weeks.^[4] As that time passes, nymphs appear. Males are victims of ultra-violet lights, and may be found in moth traps.^[4]