Perny, B. 2005 Schildlaus-Breitruessler und Fichtenquirlschildlaus - Der Kuckuck im Laeusenest. [Scale snout beetle and spruce bud scale - the cuckoo in the aphids home.]. Forstschutz Aktuell. November 2005: 26-27.

Notes: In the spring 2004, samples of Norway spruce which were heavily infested by the Spruce bud scale (Physokermes hemichryphus) were brought to the Department of Forest Protection. In many of the adult scales either the larvae or the adult beetle of a predator of these scales was found. It was identified as Common scale snout beetle (Brachytarsus nebulosus), also known as an efficient predator of Physokermes spp. Because of the appearance of the predator no measures were recommended. In 2005, no further outbreak was observed.