Plinthisus brevipennis (Latreille, 1807) (Heteroptera: Rhyparochromidae) new for South Tyrol. The seed bug species Plinthisus brevipennis was first recorded for South Tyrol (Trentino- Alto Adige/Südtirol, Italy) using soil core samples. The species is widely distributed but tends to go unrecorded because of its small size (approx. 3 mm) and life history, mainly occurring in plant litter near the soil surface. The species was found by soil samples in a semi-arid grassland west of Bolzano.